Memory element
First Claim
Patent Images
1. A memory element comprising:
- a magnetic film member which is formed by a patterning process,a read out line for information data readout provided on said magnetic film member in a manner insulated from said magnetic film member, said read out line being made of an artificial lattice magnetoresistance effect film, anda first current feed line and a second current feed line arranged at right angles to each other and in parallel with a plane including said read out line, said first and second current feed lines being insulated from each other and from said magnetic film member and said read out line by insulation layers, said first and second current feed lines performing a writing-data action of the memory element by impressing a magnetic field on said magnetic film member by feeding a first current in said first current feed line and a second current in said second current feed line,said read out line of said artificial lattice magnetoresistance effect film having a structure of an alternate lamination of metallic magnetic layers of a thickness of 5-50Å and
metallic nonmagnetic layers of a thickness of 5-50Å
.
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Abstract
A high performance thin film memory device uses an artificial lattice magnetoresistance effect film, and operable with a low magnetic field and room temperature; and the device has a magnetic film part M, current feed lines R and R'"'"' for generating magnetic field for information data writing-in, and an information data readout line S of an artificial lattice magnetoresistance film of a lamination structure of a metallic magnetic thin layers such as Ni--Fe--Co system and a metallic nonmagnetic thin layers such as Cu.
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Citations
11 Claims
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1. A memory element comprising:
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a magnetic film member which is formed by a patterning process, a read out line for information data readout provided on said magnetic film member in a manner insulated from said magnetic film member, said read out line being made of an artificial lattice magnetoresistance effect film, and a first current feed line and a second current feed line arranged at right angles to each other and in parallel with a plane including said read out line, said first and second current feed lines being insulated from each other and from said magnetic film member and said read out line by insulation layers, said first and second current feed lines performing a writing-data action of the memory element by impressing a magnetic field on said magnetic film member by feeding a first current in said first current feed line and a second current in said second current feed line, said read out line of said artificial lattice magnetoresistance effect film having a structure of an alternate lamination of metallic magnetic layers of a thickness of 5-50Å and
metallic nonmagnetic layers of a thickness of 5-50Å
. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A memory element comprising:
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a magnetic film member which is formed by a patterning process, a read out line for information data readout provided on said magnetic film member in a manner insulated from said magnetic film member, said read out line being made of an artificial lattice magnetoresistance effect film, and a first current feed line and a second current feed line arranged at right angles to each other and in parallel with a plane including said read out line, said first and second current feed lines being insulated from each other and from said magnetic film and said read out line by insulation layers, said first and second current feed lines performing a writing-data action of the memory element by impressing a magnetic field on said magnetic film member by feeding a first current in said first current feed line and a second current in said second current feed line, said read out line of said artificial lattice magnetoresistance effect film having a structure of an alternate lamination of first metallic magnetic layers of a thickness of 5-50Å
, second metallic magnetic layers of a thickness of 5-50Å and
metallic nonmagnetic layers of a thickness of 5-50Å
, in a manner to intermediating said metallic nonmagnetic layers therebetween, where said first metallic magnetic layers include (Nix Co1-x)x, (0.6≦
x≦
1.0, 0.7≦
x'"'"'≦
1.0) as their main composition, said second metallic magnetic layers include (Coy Ni1-y)1-z (0.4≦
y≦
1.0, 0.8≦
z≦
1.0) as their main composition, and the metallic nonmagnetic layers include either one of Cu, Ag, or Au as their main composition. - View Dependent Claims (10, 11)
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Specification