Perpendicular Spin Transfer Torque Memory (STTM) Device with Coupled Free Magnetic Layers
First Claim
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1. A material layer stack for a magnetic tunneling junction, the material layer stack comprising:
- a fixed magnetic layer;
a dielectric layer disposed above the fixed magnetic layer;
a first free magnetic layer disposed above the dielectric layer; and
a second free magnetic layer magnetically coupled with the first free magnetic layer.
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Abstract
Perpendicular spin transfer torque memory (STTM) devices with enhanced stability and damping are described. For example, a material layer stack for a magnetic tunneling junction includes a fixed magnetic layer. A dielectric layer is disposed above the fixed magnetic layer. A first free magnetic layer is disposed above the dielectric layer. A second free magnetic layer is magnetically coupled with the first free magnetic layer.
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Citations
23 Claims
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1. A material layer stack for a magnetic tunneling junction, the material layer stack comprising:
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a fixed magnetic layer; a dielectric layer disposed above the fixed magnetic layer; a first free magnetic layer disposed above the dielectric layer; and a second free magnetic layer magnetically coupled with the first free magnetic layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A non-volatile memory device, comprising:
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a bottom electrode; a fixed magnetic layer disposed above the bottom electrode; a dielectric layer disposed above the fixed magnetic layer; a first free magnetic layer disposed above the dielectric layer; a second free magnetic layer magnetically coupled with the first free magnetic layer; a top electrode disposed above the second free magnetic layer; and a transistor electrically connected to the top or the bottom electrode, a source line, and a word line. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A material layer stack for a magnetic tunneling junction, the material layer stack comprising:
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a fixed magnetic layer; a dielectric layer disposed above the fixed magnetic layer; a free magnetic layer disposed above the dielectric layer; and a multi-layer stack that alternates ferromagnetic and non-magnetic layers, the multi-layer stack is magnetically coupled with the free magnetic layer. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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Specification