Invention Grant
- Patent Title: Perpendicular STTMRAM device with balanced reference layer
- Patent Title (中): 具有平衡参考层的垂直STTMRAM设备
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Application No.: US14026163Application Date: 2013-09-13
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Publication No.: US09024398B2Publication Date: 2015-05-05
- Inventor: Huadong Gan , Yuchen Zhou , Yiming Huai
- Applicant: Avalanche Technology Inc.
- Applicant Address: US CA Fremont
- Assignee: Avalanche Technology, Inc.
- Current Assignee: Avalanche Technology, Inc.
- Current Assignee Address: US CA Fremont
- Agent Bing K. Yen
- Main IPC: H01L29/82
- IPC: H01L29/82 ; H01F10/32 ; G11C11/16 ; H01F41/30 ; H01L29/66 ; H01L43/08 ; B82Y40/00

Abstract:
A spin transfer torque magnetic random access memory (STTMRAM) element comprises a reference layer, which can be a single layer structure or a synthetic multi-layer structure, formed on a substrate, with a fixed perpendicular magnetic component. A junction layer is formed on top of the reference layer and a free layer is formed on top of the junction layer with a perpendicular magnetic orientation, at substantially its center of the free layer and switchable. A tuning layer is formed on top of the free layer and a fixed layer is formed on top of the tuning layer, the fixed layer has a fixed perpendicular magnetic component opposite to that of the reference layer. The magnetic orientation of the free layer switches relative to that of the reference layer. The perpendicular magnetic components of the fixed layer and the reference layer substantially cancel each other and the free layer has an in-plane edge magnetization field.
Public/Granted literature
- US20140015076A1 PERPENDICULAR STTMRAM DEVICE WITH BALANCED REFERENCE LAYER Public/Granted day:2014-01-16
Information query
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