Defect injection structure and mechanism for magnetic memory
First Claim
1. A magnetic memory device comprising:
- a non-magnetic cylindrical core configured to receive a current;
a first portion surrounding the cylindrical core, the first portion configured to introduce one or more magnetic instabilities into a second portion, the second portion adjacent to the first portion and arranged in a stack with respect to the first portion; and
the second portion also surrounding the cylindrical core and configured to store information based on a respective position of the one or more magnetic instabilities, wherein;
the second portion comprises a first plurality of magnetic layers and a first plurality of non-magnetic layers; and
respective magnetic layers of the first plurality of magnetic layers are separated by respective non-magnetic layers of the first plurality of non-magnetic layers.
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0 Petitions
Accused Products
Abstract
The various implementations described herein include magnetic memory devices and systems, and methods for injecting defects into the devices and systems. In one aspect, a magnetic memory device comprises a non-magnetic cylindrical core, a first portion, and a second portion. The core is configured to receive a current. The first portion surrounds the core and is configured to introduce magnetic instabilities into the second portion. The second portion is adjacent to and arranged in a stack with respect to the first portion. The second portion also surrounds the core and is configured to store information based on a respective position of the magnetic instabilities. The second portion comprises a first plurality of magnetic layers and a first plurality of non-magnetic layers. Respective magnetic layers of the first plurality of magnetic layers are separated by respective non-magnetic layers of the plurality of non-magnetic layers.
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Citations
20 Claims
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1. A magnetic memory device comprising:
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a non-magnetic cylindrical core configured to receive a current; a first portion surrounding the cylindrical core, the first portion configured to introduce one or more magnetic instabilities into a second portion, the second portion adjacent to the first portion and arranged in a stack with respect to the first portion; and the second portion also surrounding the cylindrical core and configured to store information based on a respective position of the one or more magnetic instabilities, wherein; the second portion comprises a first plurality of magnetic layers and a first plurality of non-magnetic layers; and respective magnetic layers of the first plurality of magnetic layers are separated by respective non-magnetic layers of the first plurality of non-magnetic layers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of operating a magnetic memory, comprising:
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at a magnetic memory device including; a cylindrical core; a first portion surrounding the cylindrical core, the first portion including a first magnetic layer having a first magnetization in a first direction; and a second portion adjacent to the first portion and arranged in a stack with respect to the first portion, wherein; the second portion includes a plurality of magnetic layers and a plurality of non-magnetic layers; the plurality of magnetic layers includes a second magnetic layer that is separated from the first magnetic layer by a non-magnetic layer; the plurality of magnetic layers includes a first subset having the first magnetization in the first direction and a second subset having a second magnetization in a second direction opposite to the first direction; and respective magnetic layers of the plurality of magnetic layers are separated by respective non-magnetic layers of the plurality of non-magnetic layers; and the method including; supplying a sequence of currents to an input terminal at a first end of the cylindrical core, the sequence of currents including a first current and a second current after the first current, wherein; the first current causes switching of magnetization direction of the second subset from the second direction to the first direction; and the second current causes switching of magnetization direction of respective layers of the plurality of magnetic layers such that the second portion has an antiferromagnetic configuration with the second magnetic layer having the first direction. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification