Invention Grant
- Patent Title: Magnetic random access memory (MRAM) cell with low power consumption
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Application No.: US14647600Application Date: 2013-11-19
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Publication No.: US09679624B2Publication Date: 2017-06-13
- Inventor: Lucien Lombard , Ioan Lucian Prejbeanu
- Applicant: CROCUS Technology SA
- Applicant Address: FR Grenoble
- Assignee: CROCUS TECHNOLOGY SA
- Current Assignee: CROCUS TECHNOLOGY SA
- Current Assignee Address: FR Grenoble
- Agency: Pearne & Gordon LLP
- Priority: EP12290413 20121127
- International Application: PCT/EP2013/074194 WO 20131119
- International Announcement: WO2014/082897 WO 20140605
- Main IPC: G11C11/16
- IPC: G11C11/16 ; H01L43/02 ; H01L43/08

Abstract:
A magnetic random access memory (MRAM) cell including a magnetic tunnel junction containing: a storage layer including at least one storage ferromagnetic layer, each storage ferromagnetic layer having a storage magnetization; an antiferromagnetic storage layer pinning the storage magnetization at a low threshold temperature and freeing them at a high temperature threshold; a reference layer; and a tunnel barrier layer between the reference layer and the storage layer. The magnetic tunnel junction also includes a free ferromagnetic layer having a free magnetization adapted to induce a magnetic stray field magnetically coupling the free ferromagnetic layer with the storage layer; such that the storage magnetization can be switched by the magnetic stray field when the magnetic tunnel junction is at the high temperature threshold. The disclosed MRAM cell has low power consumption.
Public/Granted literature
- US20150302911A1 MAGNETIC RANDOM ACCESS MEMORY (MRAM) CELL WITH LOW POWER CONSUMPTION Public/Granted day:2015-10-22
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