Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
54 words
An optical memory (1) of phase transition type comprising: (a) a substrate (3); and (b) a recording layer (7) supported on said substrate (3), said recording layer (7) comprising an intermetallic compound with a melting point between 300 to 800°C capable of undergoing phase-changing between equilibrium phase and non-equilibrium phase when exposed to light.
Claim 2
Dependent Claim
54 words
An optical memory (1) of phase transition type comprising: (a) a substrate (3); and (b) a recording layer (7) supported on said substrate (3), said recording layer (7) comprising an intermetallic compound with a melting point between 300 to 800°C capable of undergoing phase-changing between equilibrium phase and non-equilibrium phase when exposed to light.
Claim 3
Dependent Claim
34 words
The optical memory as set forth in claim 1, wherein said intermetallic compound is a normal valency compound selected from the group consisting of AuSn, AuIn 2 , InSb, BiTe, SnAs CaSb, and GeTe.
Claim 4
Dependent Claim
57 words
The optical memory as set forth in claim 1, wherein said intermetallic compound is a size factor compound selected from the group consisting of AuPb 2 , PdGa 5 , KPb 2 , Au2Pb, KBi 2 , M g Zn 2' Mg 2 Ba, Au 2 Bi, Mg 2 Sr, Mg 2 Ca, and MuSn 2 .
Claim 5
Dependent Claim
38 words
The optical memory as set forth in claim 1, wherein said intermetallic compound is an electron compound selected from the group consisting of MgTl 2 , LiPb, CuGa 2 , Cu 5 Cd 8 , MgHg and AuZn.
Claim 6
Dependent Claim
24 words
The optical memory as set forth in claim 1, wherein said recording layer (7) comprises an intermetallic compound more than 80% by atomic percentage.
Claim 7
Dependent Claim
37 words
The optical memory as set forth in claim 1, wherein said intermetallic compound is formed as a thin film (7) on the substrate ( 3 ) in accordance with binary target co-sputtering technique using two different targets.
Claim 8
Dependent Claim
16 words
The optical memory as set forth in claim 1, wherein the light is a laser beam.
Claim 9
Dependent Claim
23 words
The optical memory as set forth in claim 6, wherein each of two electric powers applied to the two targets is controlled independently.