US4308474A
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Rare earth-iron magnetostrictive materials and devices using these materials
Assignee: United States Department of Energy
•
Filing: 1979-11-14
•
Granted: 1981-12-29
•
Expires: 1999-11-14
Abstract
Abstract Grain-oriented polycrystalline or single crystal magnetostrictive materialsn the general formula Tb x Dy 1-x Fe 2-w , Tb x Ho 1-x Fe 2-w , Sm x Dy 1-x Fe x-w , Sm x Ho 1-x Fe 2-w , Tb x Ho y Dy z Fe 2-w , or Sm x Ho y Dy z Fe 2-w , wherein O≦w≦0.20, and x+y+z=1. X, y, and z are selected to maximize the magnetostrictive effect and the magnetomechanical coupling coefficient K 33 . These material may be used in magnetostrictive transducers, delay lines, variable frequency resonators, and filters.
Inventors
- 👤 Howard T. Savage
- 👤 Arthur E. Clark
- 👤 O. Dale McMasters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:17
CPC Classifications
H; H10; H10N; H10N35/00; H10N35/80; H10N35/85; C; C30; C30B; C30B11/00; C30B13/00; C30B29/00; C30B29/10; C30B29/52
Claims Analysis
Total Claims: 128
Claim 1
Independent Claim
49 words
A grain-oriented polycrystalline rare earth-iron magnetostrictive material of the formula Tb x Dy 1-x Fe 2-w wherein 0.20≦x≦1.00 and 0≦w≦0.20, wherein the grains of the material have their common principal axes substantially pointed along the growth axis of the material which is within 10° of the λ 111 axis.
Claim 2
Dependent Claim
49 words
A grain-oriented polycrystalline rare earth-iron magnetostrictive material of the formula Tb x Dy 1-x Fe 2-w wherein 0.20≦x≦1.00 and 0≦w≦0.20, wherein the grains of the material have their common principal axes substantially pointed along the growth axis of the material which is within 10° of the λ 111 axis.
Claim 3
Dependent Claim
7 words
The material of claim 1 wherein 0.20≦x≦0.30.
Claim 4
Dependent Claim
7 words
The material of claim 1 wherein 0≦w≦0.10.
Claim 5
Dependent Claim
49 words
A grain-oriented polycrystalline rare earth-iron magnetostrictive material of the formula Tb x Ho 1-x Fe 2-w wherein 0.10≦x≦1 and 0≦w≦0.20, wherein the grains of the material have their common principal axes substantially pointed along the growth axis of the material which is within 10° of the λ 111 axis.
Claim 6
Dependent Claim
49 words
A grain-oriented polycrystalline rare earth-iron magnetostrictive material of the formula Tb x Ho 1-x Fe 2-w wherein 0.10≦x≦1 and 0≦w≦0.20, wherein the grains of the material have their common principal axes substantially pointed along the growth axis of the material which is within 10° of the λ 111 axis.
Claim 7
Dependent Claim
7 words
The material of claim 4 wherein 0.10≦x≦0.20.
Claim 8
Dependent Claim
7 words
The material of claim 4 wherein 0≦w≦0.10.
Claim 9
Dependent Claim
49 words
A grain-oriented polycrystalline rare earth-iron magnetostrictive material of the formula Sm x Dy 1-x Fe 2-w wherein 0.80≦x≦1.00 and 0≦w≦0.20, wherein the grains of the material have their common principal axes substantially pointed along the growth axis of the material which is within 10° of the λ 111 axis.
Claim 10
Dependent Claim
49 words
A grain-oriented polycrystalline rare earth-iron magnetostrictive material of the formula Sm x Dy 1-x Fe 2-w wherein 0.80≦x≦1.00 and 0≦w≦0.20, wherein the grains of the material have their common principal axes substantially pointed along the growth axis of the material which is within 10° of the λ 111 axis.
Claim 11
Dependent Claim
7 words
The material of claim 7 wherein 0.80≦x≦0.90.
Claim 12
Dependent Claim
7 words
The material of claim 7 wherein 0≦w≦0.10.
Claim 13
Dependent Claim
49 words
A grain-oriented polycrystalline rare earth-iron magnetostrictive material of the formula Sm x Ho 1-x Fe 2-w wherein 0.60≦x≦1.00 and 0≦w≦0.20, wherein the grains of the material have their common principal axes substantially pointed along the growth axis of the material which is within 10° of the λ 111 axis.
Claim 14
Dependent Claim
49 words
A grain-oriented polycrystalline rare earth-iron magnetostrictive material of the formula Sm x Ho 1-x Fe 2-w wherein 0.60≦x≦1.00 and 0≦w≦0.20, wherein the grains of the material have their common principal axes substantially pointed along the growth axis of the material which is within 10° of the λ 111 axis.
Claim 15
Dependent Claim
7 words
The material of claim 10 wherein 0.60≦x≦0.80.
Claim 16
Dependent Claim
7 words
The material of claim 10 wherein 0≦w≦0.10.
Claim 17
Dependent Claim
56 words
A grain-oriented polycrystalline rare earth-iron magnetostrictive material of the formula Tb x Ho y Dy z Fe 2-w wherein 0.10≦x<1.00, 0≦y≦0.90, 0≦z≦0.80, and 0≦w≦0.20, wherein x+y+z=1, and wherein the grains of the material have their common principal axes substantially pointed along the growth axis of the material which is within 10° of the λ 111 axis.
Claim 18
Dependent Claim
56 words
A grain-oriented polycrystalline rare earth-iron magnetostrictive material of the formula Tb x Ho y Dy z Fe 2-w wherein 0.10≦x<1.00, 0≦y≦0.90, 0≦z≦0.80, and 0≦w≦0.20, wherein x+y+z=1, and wherein the grains of the material have their common principal axes substantially pointed along the growth axis of the material which is within 10° of the λ 111 axis.
Claim 19
Dependent Claim
7 words
The material of claim 13 wherein 0.15≦x≦0.25.
Claim 20
Dependent Claim
7 words
The material of claim 13 wherein 0.55<y≦0.65.
Claim 21
Dependent Claim
7 words
The material of claim 13 wherein 0.15≦z≦0.25.
Claim 22
Dependent Claim
7 words
The material of claim 13 wherein 0≦w≦0.10.
Claim 23
Dependent Claim
56 words
A grain-oriented polycrystalline rare earth-iron magnetostrictive material of the formula Sm x Ho y Dy z Fe 2-w wherein 0.60≦x<1.00, 0≦y≦0.40, 0≦z≦0.40, and 0≦w≦0.20, wherein x+y+z=1, and wherein the grains of the material have their common principal axes substantially pointed along the growth axis of the material which is within 10° of the λ 111 axis.
Claim 24
Dependent Claim
56 words
A grain-oriented polycrystalline rare earth-iron magnetostrictive material of the formula Sm x Ho y Dy z Fe 2-w wherein 0.60≦x<1.00, 0≦y≦0.40, 0≦z≦0.40, and 0≦w≦0.20, wherein x+y+z=1, and wherein the grains of the material have their common principal axes substantially pointed along the growth axis of the material which is within 10° of the λ 111 axis.
Claim 25
Dependent Claim
7 words
The material of claim 18 wherein 0.70≦x≦0.90.
Claim 26
Dependent Claim
7 words
The material of claim 18 wherein 0.20≦y≦0.40.
Claim 27
Dependent Claim
7 words
The material of claim 18 wherein 0≦z≦0.20.
Claim 28
Dependent Claim
7 words
The material of claim 18 wherein 0≦w≦0.10.
Claim 29
Dependent Claim
54 words
A single crystal rare earth-iron magnetostrictive material of the formula TB x Dy 1-x Fe 2-w wherein 0.20≦x≦1.00 and 0≦w≦0.20 having angle grain boundaries of less than 5°, wherein the principal axis of the Laves phase is pointed along the growth axis of the material which is within 10° of the λ 111 axis.
Claim 30
Dependent Claim
54 words
A single crystal rare earth-iron magnetostrictive material of the formula TB x Dy 1-x Fe 2-w wherein 0.20≦x≦1.00 and 0≦w≦0.20 having angle grain boundaries of less than 5°, wherein the principal axis of the Laves phase is pointed along the growth axis of the material which is within 10° of the λ 111 axis.
Claim 31
Dependent Claim
7 words
The material of claim 23 wherein 0.20≦x≦0.30.
Claim 32
Dependent Claim
7 words
The material of claim 23 wherein 0≦w≦0.10.
Claim 33
Dependent Claim
54 words
A single crystal rare earth-iron magnetostrictive material of the formula Tb x Ho 1-x Fe 2-w wherein 0.10≦x≦1.00 and 0≦w≦0.20 having angle grain boundaries of less than 5°, wherein the principal axis of the Laves phase is pointed along the growth axis of the material which is within 10° of the λ 111 axis.
Claim 34
Dependent Claim
54 words
A single crystal rare earth-iron magnetostrictive material of the formula Tb x Ho 1-x Fe 2-w wherein 0.10≦x≦1.00 and 0≦w≦0.20 having angle grain boundaries of less than 5°, wherein the principal axis of the Laves phase is pointed along the growth axis of the material which is within 10° of the λ 111 axis.
Claim 35
Dependent Claim
7 words
The material of claim 26 wherein 0.10≦x≦0.20.
Claim 36
Dependent Claim
7 words
The material of claim 26 wherein 0≦w'0.10.
Claim 37
Dependent Claim
54 words
A single crystal rare earth-iron magnetostrictive material of the formula Sm x Dy 1-x Fe 2-w wherein 0.80≦x≦1.00 and 0≦w≦0.20 having angle grain boundaries of less than 5°, wherein the principal axis of the Laves phase is pointed along the growth axis of the material which is within 10° of the λ 111 axis.
Claim 38
Dependent Claim
54 words
A single crystal rare earth-iron magnetostrictive material of the formula Sm x Dy 1-x Fe 2-w wherein 0.80≦x≦1.00 and 0≦w≦0.20 having angle grain boundaries of less than 5°, wherein the principal axis of the Laves phase is pointed along the growth axis of the material which is within 10° of the λ 111 axis.
Claim 39
Dependent Claim
7 words
The material of claim 29 wherein 0.80≦x≦0.90.
Claim 40
Dependent Claim
7 words
The material of claim 29 wherein 0≦w≦0.10.
Claim 41
Dependent Claim
54 words
A single crystal rare earth-iron magnetostrictive material of the formula Sm x Ho 1-x Fe 2-w wherein 0.60≦x≦1.00 and 0≦w≦0.20 having angle grain boundaries of less than 5°, wherein the principal axis of the Laves phase is pointed along the growth axis of the material which is within 10° of the λ 111 axis.
Claim 42
Dependent Claim
54 words
A single crystal rare earth-iron magnetostrictive material of the formula Sm x Ho 1-x Fe 2-w wherein 0.60≦x≦1.00 and 0≦w≦0.20 having angle grain boundaries of less than 5°, wherein the principal axis of the Laves phase is pointed along the growth axis of the material which is within 10° of the λ 111 axis.
Claim 43
Dependent Claim
7 words
The material of claim 32 wherein 0.60≦x≦0.80.
Claim 44
Dependent Claim
7 words
The material of claim 32 wherein 0≦w≦0.10.
Claim 45
Dependent Claim
59 words
A single crystal rare earth-iron magnetostrictive material of the formula Tb x Ho y Dy z Fe 2-w where 0.1≦x<1.00, 0≦y≦0.90, 0≦z≦0.80, and 0≦w≦0.20, x+y+z=1 having angle grain boundaries of less than 5°, wherein the principal axis of the Laves phase is pointed along the growth axis of the material which is within 10° of the λ 111 axis.
Claim 46
Dependent Claim
59 words
A single crystal rare earth-iron magnetostrictive material of the formula Tb x Ho y Dy z Fe 2-w where 0.1≦x<1.00, 0≦y≦0.90, 0≦z≦0.80, and 0≦w≦0.20, x+y+z=1 having angle grain boundaries of less than 5°, wherein the principal axis of the Laves phase is pointed along the growth axis of the material which is within 10° of the λ 111 axis.
Claim 47
Dependent Claim
7 words
The material of claim 35 wherein 0.15≦x≦0.25.
Claim 48
Dependent Claim
7 words
The material of claim 35 wherein 0.55≦y≦0.65.
Claim 49
Dependent Claim
7 words
The material of claim 35 wherein 0.15≦z≦0.25.
Claim 50
Dependent Claim
7 words
The material of claim 35 wherein 0≦w≦0.1.
Claim 51
Dependent Claim
59 words
A single crystal rare earth-iron magnetostrictive material of the formula Sm x Ho y Dy z Fe 2-w wherein 0.60≦x<1.0, 0≦y≦0.40, 0≦z≦0.40, and 0≦w≦0.20, x+y+z=1 having angle grain boundaries of less than 5°, wherein the principal axis of the Laves phase is pointed along the growth axis of the material which is within 10° of the λ 111 axis.
Claim 52
Dependent Claim
59 words
A single crystal rare earth-iron magnetostrictive material of the formula Sm x Ho y Dy z Fe 2-w wherein 0.60≦x<1.0, 0≦y≦0.40, 0≦z≦0.40, and 0≦w≦0.20, x+y+z=1 having angle grain boundaries of less than 5°, wherein the principal axis of the Laves phase is pointed along the growth axis of the material which is within 10° of the λ 111 axis.
Claim 53
Dependent Claim
7 words
The material of claim 40 wherein 0.70≦x≦0.90.
Claim 54
Dependent Claim
7 words
The material of claim 40 wherein 0.10≦y≦0.30.
Claim 55
Dependent Claim
7 words
The material of claim 40 wherein 0≦z≦0.20.
Claim 56
Dependent Claim
7 words
The material of claim 40 wherein 0≦w≦0.10.
Claim 57
Dependent Claim
66 words
A transducer for converting magnetic energy into mechanical energy or vice versa having a magnetostrictive element comprising: a grain-oriented polycrystalline rare earth-iron magnetostrictive material of the formula Tb x Dy 1-x Fe 2-w wherein 0.20≦x≦1.00 and 0≦w≦0.20, wherein the grains of the material have their common principal axes substantially pointed along the growth axis of the material which is within 10° of the λ 111 axis.
Claim 58
Dependent Claim
66 words
A transducer for converting magnetic energy into mechanical energy or vice versa having a magnetostrictive element comprising: a grain-oriented polycrystalline rare earth-iron magnetostrictive material of the formula Tb x Dy 1-x Fe 2-w wherein 0.20≦x≦1.00 and 0≦w≦0.20, wherein the grains of the material have their common principal axes substantially pointed along the growth axis of the material which is within 10° of the λ 111 axis.
Claim 59
Dependent Claim
7 words
The transducer of claim 45 wherein 0.20≦x≦0.30.
Claim 60
Dependent Claim
7 words
The transducer of claim 45 wherein 0≦w≦0.10.
Claim 61
Dependent Claim
66 words
The transducer for converting magnetic energy into mechanical energy or vice versa having a magnetostrictive element comprising: a grain-oriented polycrystalline rare earth-iron magnetostrictive material of the formula Tb x Ho 1-x Fe 2-w wherein 0.10≦x≦1 and 0≦w≦0.20, wherein the grains of the material have their common principal axes substantially pointed along the growth axis of the material which is within 10° of the λ 111 axis.
Claim 62
Dependent Claim
66 words
The transducer for converting magnetic energy into mechanical energy or vice versa having a magnetostrictive element comprising: a grain-oriented polycrystalline rare earth-iron magnetostrictive material of the formula Tb x Ho 1-x Fe 2-w wherein 0.10≦x≦1 and 0≦w≦0.20, wherein the grains of the material have their common principal axes substantially pointed along the growth axis of the material which is within 10° of the λ 111 axis.
Claim 63
Dependent Claim
7 words
The transducer of claim 48 wherein 0.10≦x≦0.20.
Claim 64
Dependent Claim
7 words
The transducer of claim 48 wherein 0≦w≦0.10.
Claim 65
Dependent Claim
66 words
A transducer for converting magnetic energy into mechanical energy or vice versa having a magnetostrictive element comprising: a grain-oriented polycrystalline rare earth-iron magnetostrictive material of the formula Sm x Dy 1-x Fe 2-w wherein 0.80≦x≦1.00 and 0≦w≦0.20, wherein the grains of the material have their common principal axes substantially pointed along the growth axis of the material which is within 10° of the λ 111 axis.
Claim 66
Dependent Claim
66 words
A transducer for converting magnetic energy into mechanical energy or vice versa having a magnetostrictive element comprising: a grain-oriented polycrystalline rare earth-iron magnetostrictive material of the formula Sm x Dy 1-x Fe 2-w wherein 0.80≦x≦1.00 and 0≦w≦0.20, wherein the grains of the material have their common principal axes substantially pointed along the growth axis of the material which is within 10° of the λ 111 axis.
Claim 67
Dependent Claim
7 words
The transducer of claim 51 wherein 0.80≦x≦0.90.
Claim 68
Dependent Claim
7 words
The transducer of claim 51 wherein 0≦w≦0.10.
Claim 69
Dependent Claim
66 words
A transducer for converting magnetic energy into mechanical energy or vice versa having a magnetostrictive element comprising: a grain-oriented polycrystalline rare earth-iron magnetostrictive material of the formula Sm x Ho 1-x Fe 2-w wherein 0.60≦x≦1.00 and 0≦w≦0.20, wherein the grains of the material have their common principal axes substantially pointed along the growth axis of the material which is within 10° of the λ 111 axis.
Claim 70
Dependent Claim
66 words
A transducer for converting magnetic energy into mechanical energy or vice versa having a magnetostrictive element comprising: a grain-oriented polycrystalline rare earth-iron magnetostrictive material of the formula Sm x Ho 1-x Fe 2-w wherein 0.60≦x≦1.00 and 0≦w≦0.20, wherein the grains of the material have their common principal axes substantially pointed along the growth axis of the material which is within 10° of the λ 111 axis.
Claim 71
Dependent Claim
7 words
The transducer of claim 54 wherein 0.60≦x≦0.80.
Claim 72
Dependent Claim
7 words
The transducer of claim 54 wherein 0≦w≦0.10.
Claim 73
Dependent Claim
73 words
A transducer for converting magnetic energy into mechanical energy or vice versa having an magnetostrictive element comprising: a grain-oriented polycrystalline rare earth-iron magnetostrictive material of the formula Tb x Ho y Dy z Fe 2-w wherein 0.10≦x<1.00, 0≦y≦0.90, 0≦z≦0.80, and 0≦w≦0.20, wherein x+y+z=1, and wherein the grains of the material have their common principal axes substantially pointed along the growth axis of the material which is within 10° of the λ 111 axis.
Claim 74
Dependent Claim
73 words
A transducer for converting magnetic energy into mechanical energy or vice versa having an magnetostrictive element comprising: a grain-oriented polycrystalline rare earth-iron magnetostrictive material of the formula Tb x Ho y Dy z Fe 2-w wherein 0.10≦x<1.00, 0≦y≦0.90, 0≦z≦0.80, and 0≦w≦0.20, wherein x+y+z=1, and wherein the grains of the material have their common principal axes substantially pointed along the growth axis of the material which is within 10° of the λ 111 axis.
Claim 75
Dependent Claim
7 words
The transducer of claim 57 wherein 0.15≦x≦0.25.
Claim 76
Dependent Claim
7 words
The transducer of claim 57 wherein 0.55≦y≦0.65.
Claim 77
Dependent Claim
7 words
The transducer of claim 57 wherein 0.15≦z≦0.25.
Claim 78
Dependent Claim
7 words
The transducer of claim 57 wherein 0≦w≦0.10.
Claim 79
Dependent Claim
73 words
A transducer for converting magentic energy into mechanical energy or vice versa having a magnetostrictive element comprising: a grain-oriented polycrystalline rare earth-iron magnetostrictive material of the formula Sm x Ho y Dy z Fe 2-w wherein 0.60≦x≦1.00, 0≦y≦0.40, 0≦z≦0.40, and 0≦w≦0.20, wherein x+y+z=1, and wherein the grains of the material have their common principal axes substantially pointed along the growth axis of the material which is within 10° of the λ 111 axis.
Claim 80
Dependent Claim
73 words
A transducer for converting magentic energy into mechanical energy or vice versa having a magnetostrictive element comprising: a grain-oriented polycrystalline rare earth-iron magnetostrictive material of the formula Sm x Ho y Dy z Fe 2-w wherein 0.60≦x≦1.00, 0≦y≦0.40, 0≦z≦0.40, and 0≦w≦0.20, wherein x+y+z=1, and wherein the grains of the material have their common principal axes substantially pointed along the growth axis of the material which is within 10° of the λ 111 axis.
Claim 81
Dependent Claim
7 words
The transducer of claim 62 wherein 0.70≦x≦0.90.
Claim 82
Dependent Claim
7 words
The transducer of claim 62 wherein 0.20≦y≦0.40.
Claim 83
Dependent Claim
7 words
The transducer of claim 62 wherein 0≦z≦0.20.
Claim 84
Dependent Claim
7 words
The transducer of claim 62 wherein 0≦w≦0.10.
Claim 85
Dependent Claim
71 words
A transducer for converting magnetic energy into mechanical energy or vice versa having a magnetostrictive element comprising: a single crystal rare earth-iron magnetostrictive material of the formula Tb x Dy 1-x Fe 2-w wherein 0.20≦x≦1.00 and 0≦w≦0.20 having angle grain boundaries of less than 5°, wherein the principal axis of the Laves phase is pointed along the growth axis of the material which is within 10°0 of the λ 111 axis.
Claim 86
Dependent Claim
71 words
A transducer for converting magnetic energy into mechanical energy or vice versa having a magnetostrictive element comprising: a single crystal rare earth-iron magnetostrictive material of the formula Tb x Dy 1-x Fe 2-w wherein 0.20≦x≦1.00 and 0≦w≦0.20 having angle grain boundaries of less than 5°, wherein the principal axis of the Laves phase is pointed along the growth axis of the material which is within 10°0 of the λ 111 axis.
Claim 87
Dependent Claim
7 words
The transducer of claim 67 wherein 0.20≦x≦0.30.
Claim 88
Dependent Claim
7 words
The transducer of claim 67 wherein 0≦w≦0.10.
Claim 89
Dependent Claim
71 words
A transducer for converting magnetic energy into mechanical energy or vice versa having a magnetostrictive element comprising: a single crystal rare earth-iron magnetostrictive material of the formula Tb x Ho 1-x Fe 2-w wherein 0.10≦x≦1.00 and 0≦w0.20 having angle grain boundaries of less than 5°, wherein the principal axis of the Laves phase is pointed along the growth axis of the material which is within 10° of the λ 111 axis.
Claim 90
Dependent Claim
71 words
A transducer for converting magnetic energy into mechanical energy or vice versa having a magnetostrictive element comprising: a single crystal rare earth-iron magnetostrictive material of the formula Tb x Ho 1-x Fe 2-w wherein 0.10≦x≦1.00 and 0≦w0.20 having angle grain boundaries of less than 5°, wherein the principal axis of the Laves phase is pointed along the growth axis of the material which is within 10° of the λ 111 axis.
Claim 91
Dependent Claim
7 words
The transducer of claim 70 wherein 0.10≦x≦0.20.
Claim 92
Dependent Claim
7 words
The transducer of claim 70 wherein 0≦w≦0.10.
Claim 93
Dependent Claim
71 words
A transducer for converting magnetic energy into mechanical energy or vice versa having a magnetostrictive element comprising: a single crystal rare earth-iron magnetostrictive material of the formula Sm x Dy 1-x Fe 2-w wherein 0.80≦x≦1.00 and 0≦w≦0.20 having angle grain boundaries of less than 5°, wherein the principal axis of the Laves phase is pointed along the growth axis of the material which is within 10° of the λ 111 axis.
Claim 94
Dependent Claim
71 words
A transducer for converting magnetic energy into mechanical energy or vice versa having a magnetostrictive element comprising: a single crystal rare earth-iron magnetostrictive material of the formula Sm x Dy 1-x Fe 2-w wherein 0.80≦x≦1.00 and 0≦w≦0.20 having angle grain boundaries of less than 5°, wherein the principal axis of the Laves phase is pointed along the growth axis of the material which is within 10° of the λ 111 axis.
Claim 95
Dependent Claim
7 words
The transducer of claim 73 wherein 0.80≦x≦0.90.
Claim 96
Dependent Claim
7 words
The transducer of claim 73 wherein 0≦w≦0.10.
Claim 97
Dependent Claim
71 words
A transducer for converting magnetic energy into mechanical energy or vice versa having a magnetostrictive element comprising: a single crystal rare earth-iron magnetostrictive material of the formula Sm x Ho 1-x Fe 2-w wherein 0.60≦x≦1.00 and 0≦w≦0.20 having angle grain boundaries of less than 5°, wherein the principal axis of the Laves phase is pointed along the growth axis of the material which is within 10° of the λ 111 axis.
Claim 98
Dependent Claim
71 words
A transducer for converting magnetic energy into mechanical energy or vice versa having a magnetostrictive element comprising: a single crystal rare earth-iron magnetostrictive material of the formula Sm x Ho 1-x Fe 2-w wherein 0.60≦x≦1.00 and 0≦w≦0.20 having angle grain boundaries of less than 5°, wherein the principal axis of the Laves phase is pointed along the growth axis of the material which is within 10° of the λ 111 axis.
Claim 99
Dependent Claim
7 words
The transducer of claim 76 wherein 0.60≦x≦0.80.
Claim 100
Dependent Claim
7 words
The transducer of claim 76 wherein 0≦w≦0.10.
Claim 101
Dependent Claim
76 words
A transducer for converting magnetic energy into mechanical energy or vice versa having a magnetostrictive element comprising: a single crystal rare earth-iron magnetostrictive material of the formula Tb x Ho Y Dy z Fe 2-w wherein 0.1≦x≦1.00, 0≦y≦0.90, 0≦z≦0.80, and 0≦w≦0.20, x+y+z=1 having angle grain boundaries of less than 5°, wherein the principal axis of the Laves phase is pointed along the growth axis of the material which is within 10° of the λ 111 axis.
Claim 102
Dependent Claim
76 words
A transducer for converting magnetic energy into mechanical energy or vice versa having a magnetostrictive element comprising: a single crystal rare earth-iron magnetostrictive material of the formula Tb x Ho Y Dy z Fe 2-w wherein 0.1≦x≦1.00, 0≦y≦0.90, 0≦z≦0.80, and 0≦w≦0.20, x+y+z=1 having angle grain boundaries of less than 5°, wherein the principal axis of the Laves phase is pointed along the growth axis of the material which is within 10° of the λ 111 axis.
Claim 103
Dependent Claim
7 words
The transducer of claim 79 wherein 0.15≦x≦0.25.
Claim 104
Dependent Claim
7 words
The transducer of claim 79 wherein 0.55≦y≦0.65.
Claim 105
Dependent Claim
7 words
The transducer of claim 79 wherein 0.15≦z≦0.25.
Claim 106
Dependent Claim
7 words
The transducer of claim 79 wherein 0≦w≦0.10.
Claim 107
Dependent Claim
76 words
A transducer for converting magnetic energy into mechanical energy or vice versa having a magnetostrictive element comprising: a single crystal rare earth-iron magnetostrictive material of the formula Sm x Ho y Dy z Fe 2-w wherein 0.60≦x≦1.0, 0≦y≦0.40, 0≦z≦0.40, and 0≦w≦0.20, x+y+z=1 having angle grain boundaries of less than 5°, wherein the principal axis of the Laves phase is pointed along the growth axis of the material which is within 10° of the λ 111 axis.
Claim 108
Dependent Claim
76 words
A transducer for converting magnetic energy into mechanical energy or vice versa having a magnetostrictive element comprising: a single crystal rare earth-iron magnetostrictive material of the formula Sm x Ho y Dy z Fe 2-w wherein 0.60≦x≦1.0, 0≦y≦0.40, 0≦z≦0.40, and 0≦w≦0.20, x+y+z=1 having angle grain boundaries of less than 5°, wherein the principal axis of the Laves phase is pointed along the growth axis of the material which is within 10° of the λ 111 axis.
Claim 109
Dependent Claim
7 words
The transducer of claim 84 wherein 0.70≦x≦0.90.
Claim 110
Dependent Claim
7 words
The transducer of claim 84 wherein 0.20≦y≦0.40.
Claim 111
Dependent Claim
7 words
The transducer of claim 84 wherein 0≦z≦0.20.
Claim 112
Dependent Claim
7 words
The transducer of claim 84 wherein 0≦w≦0.10.
Claim 113
Independent Claim
150 words
A device for varying the velocity of sound waves comprising: (1) a sound wave transmission element comprising a grain-oriented polycrystalline magnetostrictive material selected from the group consisting of (a) Tb x Dy 1-x Fe 2-w wherein 0.20≦x≦1.00; (b) Tb x Ho 1-x Fe 2-w wherein 0.10≦x≦1.00; (c) Sm x Dy 1-x Fe 2-w wherein 0.80≦x≦1.00; (d) Sm x Ho 1-x Fe 2-w wherein 0.60≦x≦1.00; (e) Tb x Ho y Dy z Fe 2-w wherein 0.10≦x≦1.00; 0 y 0.90, 0 z 0.80, and x+y+z=1; and (f) Sm x Ho y Dy z Fe 2-w wherein 0.60x<1.00, 0≦y≦0.40, 0≦z≦0.40, and x+y+z=1; wherein 0≦w≦0.20 for (a) through (f) and wherein the grains of the material have their common principal axis substantially pointed along the growth axis of the material which is within 10° of the λ 111 axis; and (2) means for generating a magnetic field of adjustable strength in the transmission element.
Claim 114
Independent Claim
150 words
A device for varying the velocity of sound waves comprising: (1) a sound wave transmission element comprising a grain-oriented polycrystalline magnetostrictive material selected from the group consisting of (a) Tb x Dy 1-x Fe 2-w wherein 0.20≦x≦1.00; (b) Tb x Ho 1-x Fe 2-w wherein 0.10≦x≦1.00; (c) Sm x Dy 1-x Fe 2-w wherein 0.80≦x≦1.00; (d) Sm x Ho 1-x Fe 2-w wherein 0.60≦x≦1.00; (e) Tb x Ho y Dy z Fe 2-w wherein 0.10≦x≦1.00; 0 y 0.90, 0 z 0.80, and x+y+z=1; and (f) Sm x Ho y Dy z Fe 2-w wherein 0.60x<1.00, 0≦y≦0.40, 0≦z≦0.40, and x+y+z=1; wherein 0≦w≦0.20 for (a) through (f) and wherein the grains of the material have their common principal axis substantially pointed along the growth axis of the material which is within 10° of the λ 111 axis; and (2) means for generating a magnetic field of adjustable strength in the transmission element.
Claim 115
Dependent Claim
19 words
The device of claim 89 wherein the material comprises Tb x Dy 1-x Fe 2-w wherein 0.20≦x≦0.30 and 0≦w≦0.10.
Claim 116
Dependent Claim
19 words
The device of claim 89 wherein the material comprises Tb x Ho 1-x Fe 2-w wherein 0.10≦x≦0.20 and 0≦w≦0.10.
Claim 117
Dependent Claim
19 words
The device of claim 89 wherein the material comprises Sm x Dy 1-x Fe 2-w wherein 0.80≦x≦0.90 and 0≦w≦0.10.
Claim 118
Dependent Claim
19 words
The device of claim 89 wherein the material comprises Sm x Ho 1-x Fe 2-w wherein 0.60≦x≦0.80 and 0≦w≦0.10.
Claim 119
Dependent Claim
23 words
The device of claim 89 wherein the material comprises Tb x Ho y Dy z Fe 2-w wherein 0.15≦x≦0.25, 0.55≦y≦0.65, 0.15≦x≦0.25, and 0≦w≦0.10.
Claim 120
Dependent Claim
23 words
The device of claim 89 wherein the material comprises Sm x Ho y Dy z Fe 2-w wherein 0.70≦x≦0.90, 0.20≦y≦0.40, 0≦z≦0.20, and 0≦w≦0.10.
Claim 121
Independent Claim
151 words
A device for varying the velocity of sound waves comprising: (1) a sound wave transmission element comprising a single crystal of a magnetostrictive material selected from the group consisting of (a) Tb x Dy 1-x Fe 2-w wherein 0.20≦x≦1.00; (b) Tb x Ho 1-x Fe 2-w wherein 0.10≦x≦1.00; (c) Sm x Dy 1-x Fe 2-w wherein 0.80≦x≦1.00; (d) Sm x Ho 1-x Fe 2-w wherein 0.60≦x≦1.00; (e) Tb x Ho y Dy z Fe 2-w wherein 0.10≦x<1.00, 0≦y≦0.90, 0≦z≦0.80, and x+y+z=1; and (f) Sm x Ho y Dy z Fe 2-w wherein 0.60≦x<1.00, 0≦y≦0.40, 0≦z≦0.40, and x+y+z=1; wherein 0≦w≦0.20 for (a) through (f) having angle grain boundaries of less than 5°, wherein the principal axis of the Laves phase is pointed along the growth axis of the material which is within 10° of the 111 axis; and (2) means for generating a magnetic field of adjustable strength in the transmission element.
Claim 122
Independent Claim
151 words
A device for varying the velocity of sound waves comprising: (1) a sound wave transmission element comprising a single crystal of a magnetostrictive material selected from the group consisting of (a) Tb x Dy 1-x Fe 2-w wherein 0.20≦x≦1.00; (b) Tb x Ho 1-x Fe 2-w wherein 0.10≦x≦1.00; (c) Sm x Dy 1-x Fe 2-w wherein 0.80≦x≦1.00; (d) Sm x Ho 1-x Fe 2-w wherein 0.60≦x≦1.00; (e) Tb x Ho y Dy z Fe 2-w wherein 0.10≦x<1.00, 0≦y≦0.90, 0≦z≦0.80, and x+y+z=1; and (f) Sm x Ho y Dy z Fe 2-w wherein 0.60≦x<1.00, 0≦y≦0.40, 0≦z≦0.40, and x+y+z=1; wherein 0≦w≦0.20 for (a) through (f) having angle grain boundaries of less than 5°, wherein the principal axis of the Laves phase is pointed along the growth axis of the material which is within 10° of the 111 axis; and (2) means for generating a magnetic field of adjustable strength in the transmission element.
Claim 123
Dependent Claim
19 words
The device of claim 96 wherein the material comprises Tb x Dy 1-x Fe 2-w wherein 0.20≦x≦0.30 and 0≦w≦0.10.
Claim 124
Dependent Claim
19 words
The device of claim 96 wherein the material comprises Tb x Ho 1-x Fe 2-w wherein 0.10≦x≦0.20 and 0≦w≦0.10.
Claim 125
Dependent Claim
19 words
The device of claim 96 wherein the material comprises Sm x Dy 1-x Fe 2-w wherein 0.80≦x≦0.90 and 0≦w≦0.10.
Claim 126
Dependent Claim
19 words
The device of claim 96 wherein the material comprises Sm x Ho 1-x Fe 2-w wherein 0.60≦x≦0.80 and 0≦w≦0.10.
Claim 127
Dependent Claim
25 words
The device of claim 96 wherein the material comprises Tb x Ho y Dy z Fe 2-w wherein 0.15≦x≦0.25, 0.55≦y≦0.65, 0.15≦x≦0.25, and 0 w 0.10.
Claim 128
Dependent Claim
23 words
The device of claim 96 wherein the material comprises Sm x Ho y Dy z Fe 2-w wherein 0.70≦x≦0.90, 0.20≦y≦0.40, 0≦z≦0.20, and 0≦w≦0.10.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-12-28 | 1985-06-29 | 1985-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-12-28 | 1989-06-29 | 1989-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-12-28 | 1993-06-29 | 1993-12-29 | $7700.00 | Window Closed / Lapsed |