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A track memory based on magnetic skyrmions

A magnetic skyrmion and track memory technology, applied in the field of magnetic devices, can solve problems such as high power consumption, noise, and shock-resistant operation, achieve high information storage density, improve information loss and misreading, and high stability Effect

Active Publication Date: 2020-05-26
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Traditional hard disks are still the mainstream storage method at present, with disadvantages such as high power consumption, shock resistance, and noisy operation

Method used

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  • A track memory based on magnetic skyrmions
  • A track memory based on magnetic skyrmions

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Embodiment Construction

[0024] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] The track memory based on magnetic skyrmions provided by the present invention includes antiferromagnetically coupled dual-track magnetic nanobelts, and the dual-track magnetic nanobelts can be magnetic thin films arranged on a substrate, and in some embodiments, the size is 200nm*1800nm *1nm, the magnetic material is the martensitic phase of the Heusler-type magnetic shape memory alloy.

[0026] The double-track magnetic nanoribbon is divided into information writing part, information storage part and information reading part along its track direction, and the magnetic skyrmion with opposite polarity is used to represent the binary number 0 or 1, and the magnetic skyrmion is in the The information writing part is generated, and then read by the information reading part after passing through the information storing part.

[0027] Magn...

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Abstract

The invention discloses a track memory based on magnetic skyrmions, belonging to the technical field of magnetic devices. Including antiferromagnetically coupled double-track magnetic nanoribbons, the magnetic nanoribbons are divided into information writing part, information storage part and information reading part along the track direction, and the binary number 0 or 1. Magnetic skyrmions move from the information writing part to the information reading part along the track direction of the double-track magnetic nanobelt; the magnetic skyrmions periodically move in one of the tracks of the double-track magnetic nanobelt where the information writing part is located Generated, the generated magnetic skyrmions determine whether to change the polarity according to the written data, and then determine whether to move to another track of the double-track magnetic nanoribbon; the information storage part is divided into multiple tracks along the direction of the magnetic nanoribbon A storage unit, each storage unit stores a magnetic skyrmion; the information reading part is used to read the polarity of the magnetic skyrmion passing therethrough.

Description

technical field [0001] The invention belongs to the technical field of magnetic devices, and in particular relates to a track memory based on magnetic skyrmions. Background technique [0002] Traditional hard disks are still the mainstream storage method at present, but they have disadvantages such as high power consumption, shock resistance, and noisy operation. In 2008, IBM proposed "race track" memory (magnetic domain wall memory) (S.S.P. Parkin, et.al Magnetic Domain-Wall Racetrack Memory) to replace traditional hard disks. This new type of memory is smaller and lighter than traditional hard drives, has higher storage density and faster read and write speeds, and has been confirmed by theory and experiments. [0003] The track memory uses the direction of the magnetic moment in the magnetic domain as a "bit", and uses the current to drive the magnetic domain movement. When the magnetic domain passes the write head, data can be written, and when the magnetic domain passe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11C19/08
CPCG11C19/0841
Inventor 汪晨杨欢欢王小凡曹云姗严鹏
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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