Invention Grant
- Patent Title: Memory system having thermally stable perpendicular magneto tunnel junction (MTJ) and a method of manufacturing same
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Application No.: US13737897Application Date: 2013-01-09
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Publication No.: US11678586B2Publication Date: 2023-06-13
- Inventor: Yiming Huai , Yuchen Zhou , Jing Zhang , Roger Klas Malmhall , Ioan Tudosa , Rajiv Yadav Ranjan
- Applicant: Yiming Huai , Yuchen Zhou , Jing Zhang , Roger Klas Malmhall , Ioan Tudosa , Rajiv Yadav Ranjan
- Applicant Address: US CA Pleasanton
- Assignee: Avalanche Technology, Inc.
- Current Assignee: Avalanche Technology, Inc.
- Current Assignee Address: US CA Fremont
- Agent Bing K. Yen
- The original application number of the division: US13277187 2011.10.19
- Main IPC: H10N50/80
- IPC: H10N50/80 ; G11C11/16 ; H10N50/01 ; H10N50/10

Abstract:
A spin-transfer torque magnetic random access memory (STTMRAM) element employed to store a state based on the magnetic orientation of a free layer, the STTMRAM element is made of a first perpendicular free layer (PFL) including a first perpendicular enhancement layer (PEL). The first PFL is formed on top of a seed layer. The STTMRAM element further includes a barrier layer formed on top of the first PFL and a second perpendicular reference layer (PRL) that has a second PEL. The second PRL is formed on top of the barrier layer. The STTMRAM element further includes a capping layer that is formed on top of the second PRL.
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