Invention Grant
- Patent Title: Magnetic logic unit (MLU) cell for sensing magnetic fields with improved programmability and low reading consumption
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Application No.: US15543619Application Date: 2015-12-23
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Publication No.: US10330749B2Publication Date: 2019-06-25
- Inventor: Sebastien Bandiera
- 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: EP15290014 20150116
- International Application: PCT/IB2015/059918 WO 20151223
- International Announcement: WO2016/113619 WO 20160721
- Main IPC: G01R33/09
- IPC: G01R33/09 ; G01D5/16 ; G01R33/00 ; G11C11/16

Abstract:
A magnetic logic unit (MLU) cell for sensing magnetic fields, including: a magnetic tunnel junction including a storage layer having a storage magnetization, a sense layer having a sense magnetization; a tunnel barrier layer between the storage layer and the sense layer; and a pinning layer pinning the storage magnetization at a low threshold temperature and freeing it at a high threshold temperature. The sense magnetization is freely alignable at the low and high threshold temperatures and the storage layer induces an exchange bias field magnetically coupling the sense layer such that the sense magnetization tends to be aligned antiparallel or parallel to the storage magnetization. The tunnel barrier layer is configured for generating an indirect exchange coupling between the tunnel barrier layer and the sense layer providing an additional exchange bias field.
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