US5164025A
Expired / Lapsed
US
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Soft magnetic alloy film and a magnetic head using such soft a magnetic alloy film
Assignee: Alps Alpine Co Ltd
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Filing: 1992-03-06
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Granted: 1992-11-17
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Expires: 2012-03-06
Abstract
Abstract There is provided a soft magnetic alloy having a composition expressed by formula Co x M z C w , wherein M represents one or more than one of the metal elements including Ti, Zr, Hf, Nb, Ta, Mo, V and W, and x, w and z represent the ratios in terms of atom % of the respective elements in the overall composition satisfying 55≦x≦96, 2≦x≦25, 0.1≦x≦20 and x+z+w=100 and metallurgically consisting of crystalline particles with an average diameter of less than 0.05 μm. The alloy partially contains carbide(s) of element(s) M in the crystal phase. A magnetic head comprising such a soft magnetic alloy film shows an excellent saturated flux density that can accommodate the requirement of high recording density and other requirements.
Inventors
- 👤 Naoya Hasegawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:31
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/127; G11B5/187; H; H01; H01F; H01F1/00; H01F1/01; H01F1/03; H01F1/12; H01F1/14; H01F1/147; H01F1/153; H01F1/15316
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
91 words
A soft magnetic alloy film having a composition expressed by general formula Co x M z C w , wherein: M represents at least one metal element from the group consisting of Ti, Zr, Hf Nb, Ta, Mo, V and W; and x, w and z represent ratios of the respective elements in terms of atom % and satisfy 55≦x≦96 2≦z≦25, 0.1≦w≦25 and x+z+w=100; said soft magnetic alloy film having crystalline particles with an average diameter of less than 0.05 μm; and said alloy partially containing crystalline carbides of element M.
Claim 2
Dependent Claim
91 words
A soft magnetic alloy film having a composition expressed by general formula Co x M z C w , wherein: M represents at least one metal element from the group consisting of Ti, Zr, Hf Nb, Ta, Mo, V and W; and x, w and z represent ratios of the respective elements in terms of atom % and satisfy 55≦x≦96 2≦z≦25, 0.1≦w≦25 and x+z+w=100; said soft magnetic alloy film having crystalline particles with an average diameter of less than 0.05 μm; and said alloy partially containing crystalline carbides of element M.
Claim 3
Dependent Claim
110 words
A soft magnetic alloy film having a composition expressed by general formula Co x T y M z C w , wherein: T represents at least one metal element from the group consisting of Fe, Ni, and Mn, M represents at least one metal element from the group consisting of Ti, Zr, Hf, Nb, Ta, Mo, V and W, and x, y, z and w represent ratios of the respective elements in terms of atom % and satisfy 50≦x≦96 0.1≦y≦20, 2≦z≦25, 0.1≦w≦25, x+y+z+w=100; said soft magnetic alloy film having crystalline particles with an average diameter of less than 0.005 μm; and said alloy partially containing crystalline carbides of element M.
Claim 4
Dependent Claim
110 words
A soft magnetic alloy film having a composition expressed by general formula Co x T y M z C w , wherein: T represents at least one metal element from the group consisting of Fe, Ni, and Mn, M represents at least one metal element from the group consisting of Ti, Zr, Hf, Nb, Ta, Mo, V and W, and x, y, z and w represent ratios of the respective elements in terms of atom % and satisfy 50≦x≦96 0.1≦y≦20, 2≦z≦25, 0.1≦w≦25, x+y+z+w=100; said soft magnetic alloy film having crystalline particles with an average diameter of less than 0.005 μm; and said alloy partially containing crystalline carbides of element M.
References Cited (Backward Citations)
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