Invention Grant
- Patent Title: Tilted synthetic antiferromagnet polarizer/reference layer for STT-MRAM bits
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Application No.: US15696637Application Date: 2017-09-06
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Publication No.: US10269400B2Publication Date: 2019-04-23
- Inventor: Patrick M. Braganca , John C. Read
- Applicant: Western Digital Technologies, Inc.
- Applicant Address: US CA San Jose
- Assignee: WESTERN DIGITAL TECHNOLOGIES, INC.
- Current Assignee: WESTERN DIGITAL TECHNOLOGIES, INC.
- Current Assignee Address: US CA San Jose
- Agency: Patterson & Sheridan, LLP
- Agent Steven Versteeg
- Main IPC: H01L29/82
- IPC: H01L29/82 ; G11C11/16 ; H01L43/08

Abstract:
Embodiments disclosed herein generally relate to a multilayer magnetic device, and specifically to a spin-torque transfer magnetoresistive random access memory (STT-MRAM) device which provides for a reduction in the amount of current required for switching individual bits. As such, a polarizing reference layer consisting of a synthetic antiferromagnet (SAF) structure with an in-plane magnetized ferromagnet film indirectly exchange coupled to a magnetic film with perpendicular magnetic anisotropy (PMA) is disclosed. By tuning the exchange coupling strength and the PMA, the layers of the SAF may both be canted such that either may be used as a tilted polarizer for either an in-plane free layer or a free layer with PMA.
Public/Granted literature
- US20170372763A1 TILTED SYNTHETIC ANTIFERROMAGNET POLARIZER/REFERENCE LAYER FOR STT-MRAM BITS Public/Granted day:2017-12-28
Information query
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