High density spin torque three dimensional (3D) memory arrays addressed with microwave current
First Claim
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1. A three-dimensional (3-D) nonvolatile memory array comprising:
- a plurality of memory elements arranged in a 3-D configuration wherein each memory element is selectable based on a unique resonant frequency, wherein the plurality of memory elements are arranged in stacks, each stack having a different shape anisotropy than the other stacks, the plurality of memory elements further arranged in layers with each layer having a different magnetocrystalline anisotropy (MCA) than the other layers.
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Abstract
One embodiment of the present invention includes a three dimensional memory array having a plurality of memory elements coupled to form the array through a single top lead and a single bottom lead, each memory element including a magnetic free layer in which non-volatile data can be stored, wherein each memory element possesses unique resonant frequencies associated with each digital memory state, thereby enabling frequency addressing during parallel write and read operations, each memory element further including a fixed layer and a spacer formed between the free layer and the fixed layer.
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7 Claims
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1. A three-dimensional (3-D) nonvolatile memory array comprising:
a plurality of memory elements arranged in a 3-D configuration wherein each memory element is selectable based on a unique resonant frequency, wherein the plurality of memory elements are arranged in stacks, each stack having a different shape anisotropy than the other stacks, the plurality of memory elements further arranged in layers with each layer having a different magnetocrystalline anisotropy (MCA) than the other layers. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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