Invention Grant
- Patent Title: Magnetic memory with a thermally assisted writing procedure and reduced writing field
- Patent Title (中): 具有热辅助写入程序和减少写字段的磁记忆体
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Application No.: US12773072Application Date: 2010-05-04
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Publication No.: US08391053B2Publication Date: 2013-03-05
- Inventor: Ioan Lucian Prejbeanu , Clarisse Ducruet
- Applicant: Ioan Lucian Prejbeanu , Clarisse Ducruet
- Applicant Address: FR Grenoble Cedex
- Assignee: Crocus Technology SA
- Current Assignee: Crocus Technology SA
- Current Assignee Address: FR Grenoble Cedex
- Agency: Pearne & Gordon LLP
- Priority: EP09290339 20090508
- Main IPC: G11C11/10
- IPC: G11C11/10 ; G11C11/15

Abstract:
A magnetic random access memory (MRAM) cell with a thermally assisted switching (TAS) writing procedure, comprising a magnetic tunnel junction formed from a ferromagnetic storage layer having a first magnetization adjustable at a high temperature threshold, a ferromagnetic reference layer having a fixed second magnetization direction, and an insulating layer, said insulating layer being disposed between the ferromagnetic storage and reference layers; a select transistor being electrically connected to said magnetic tunnel junction and controllable via a word line; a current line electrically connected to said magnetic tunnel junction; characterized in that the magnetocrystalline anisotropy of the ferromagnetic storage layer is essentially orthogonal with the magnetocrystalline anisotropy of the ferromagnetic reference layer. The TAS-MRAM cell of the invention can be written with a smaller magnetic field than the one used in conventional TAS-MRAM cells and has low power consumption.
Public/Granted literature
- US20100284215A1 MAGNETIC MEMORY WITH A THERMALLY ASSISTED WRITING PROCEDURE AND REDUCED WRITING FIELD Public/Granted day:2010-11-11
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