Invention Grant
US09196332B2 Perpendicular magnetic tunnel junction (pMTJ) with in-plane magneto-static switching-enhancing layer
有权
垂直磁隧道结(pMTJ),具有平面内静磁切换增强层
- Patent Title: Perpendicular magnetic tunnel junction (pMTJ) with in-plane magneto-static switching-enhancing layer
- Patent Title (中): 垂直磁隧道结(pMTJ),具有平面内静磁切换增强层
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Application No.: US13161412Application Date: 2011-06-15
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Publication No.: US09196332B2Publication Date: 2015-11-24
- Inventor: Jing Zhang , Yuchen Zhou , Rajiv Yadav Ranjan , Yiming Huai
- Applicant: Jing Zhang , Yuchen Zhou , Rajiv Yadav Ranjan , Yiming Huai
- Applicant Address: US CA Fremont
- Assignee: Avalanche Technology, Inc.
- Current Assignee: Avalanche Technology, Inc.
- Current Assignee Address: US CA Fremont
- Agent Maryam Imam; Bing K. Yen
- Main IPC: H01L29/82
- IPC: H01L29/82 ; G11C11/16 ; H01L43/08

Abstract:
An STTMRAM element includes a magnetic tunnel junction (MTJ) having a perpendicular magnetic orientation. The MTJ includes a barrier layer, a free layer formed on top of the barrier layer and having a magnetic orientation that is perpendicular and switchable relative to the magnetic orientation of the fixed layer. The magnetic orientation of the free layer switches when electrical current flows through the STTMRAM element. A switching-enhancing layer (SEL), separated from the free layer by a spacer layer, is formed on top of the free layer and has an in-plane magnetic orientation and generates magneto-static fields onto the free layer, causing the magnetic moments of the outer edges of the free layer to tilt with an in-plane component while minimally disturbing the magnetic moment at the center of the free layer to ease the switching of the free layer and to reduce the threshold voltage/current.
Public/Granted literature
- US20120280339A1 PERPENDICULAR MAGNETIC TUNNEL JUNCTION (pMTJ) WITH IN-PLANE MAGNETO-STATIC SWITCHING-ENHANCING LAYER Public/Granted day:2012-11-08
Information query
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