Racetrack memory based on magnetic skyrmions

A magnetic skyrmion and track memory technology, applied in the field of magnetic devices, can solve the problems of shockproof operation, noise, high power consumption, etc., achieve high stability, large information storage density, and improve information loss and misreading Effect

Active Publication Date: 2018-09-04
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • 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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  • Racetrack memory based on magnetic skyrmions
  • Racetrack 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 provides a racetrack memory based on magnetic skyrmions, and belongs to the technical field of magnetic devices. The racetrack memory comprises an antiferromagnetic coupling twin-track magnetic nano belt, and the magnetic nano belt is divided into an information input part, an information storage part and an information reading part sequentially in the track direction. The magnetic skyrmions with the opposite polarity are utilized for presenting binary number zero or one, and the magnetic skyrmions move from the information input part to the information reading part in the trackdirection of the twin-track magnetic nano belt. The magnetic skyrmions are periodically generated in one of the track of the twin-track magnetic nano belt where the information input part is located,whether the polarity of the generated magnetic skyrmions needs to be changed or not is determined according to the input data, and accordingly whether the magnetic skyrmions need to be moved to the other track of the twin-track magnetic nano belt or not is determined. The information storage part is divided into a plurality of storage units in the track direction of the magnetic nano belt, and onemagnetic skyrmion is stored in one storage unit. The information reading part is used for reading the polarity of the magnetic skyrmions passing through.

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 Applications(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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