Invention Application
- Patent Title: STRAM WITH COMPENSATION ELEMENT AND METHOD OF MAKING THE SAME
- Patent Title (中): 具有补偿元件的条纹及其制造方法
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Application No.: US12396905Application Date: 2009-03-03
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Publication No.: US20100226169A1Publication Date: 2010-09-09
- Inventor: Kaizhong Gao , Haiwen Xi , Wenzhong Zhu , Olle Heinonen
- Applicant: Kaizhong Gao , Haiwen Xi , Wenzhong Zhu , Olle Heinonen
- Applicant Address: US CA Scotts Valley
- Assignee: SEAGATE TECHNOLOGY LLC
- Current Assignee: SEAGATE TECHNOLOGY LLC
- Current Assignee Address: US CA Scotts Valley
- Main IPC: G11C11/14
- IPC: G11C11/14 ; H01L21/66 ; G01R33/02

Abstract:
Spin-transfer torque memory having a compensation element is disclosed. A spin-transfer torque memory unit includes a free magnetic layer having a magnetic easy axis and a magnetization orientation that can change direction due to spin-torque transfer when a write current passes through the spin-transfer torque memory unit; a reference magnetic element having a magnetization orientation that is pinned in a reference direction; an electrically insulating and non-magnetic tunneling barrier layer separating the free magnetic layer from the magnetic reference element; and a compensation element adjacent to the free magnetic layer. The compensation element applies a bias field on the magnetization orientation of the free magnetic layer. The bias field is formed of a first vector component parallel to the easy axis of the free magnetic layer and a second vector component orthogonal to the easy axis of the free magnetic layer. The bias field reduces a write current magnitude required to switch the direction of the magnetization orientation of the free magnetic layer.
Public/Granted literature
- US08053255B2 STRAM with compensation element and method of making the same Public/Granted day:2011-11-08
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