Invention Grant
US08804413B2 Multi-free layer MTJ and multi-terminal read circuit with concurrent and differential sensing
有权
多自由层MTJ和具有并发和差分感测的多端读取电路
- Patent Title: Multi-free layer MTJ and multi-terminal read circuit with concurrent and differential sensing
- Patent Title (中): 多自由层MTJ和具有并发和差分感测的多端读取电路
-
Application No.: US13586934Application Date: 2012-08-16
-
Publication No.: US08804413B2Publication Date: 2014-08-12
- Inventor: Xia Li , Wenqing Wu , Jung Pill Kim , Xiaochun Zhu , Seung H. Kang , Raghu Sagar Madala , Kendrick H. Yuen
- Applicant: Xia Li , Wenqing Wu , Jung Pill Kim , Xiaochun Zhu , Seung H. Kang , Raghu Sagar Madala , Kendrick H. Yuen
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agent Sam Talpalatsky; Nicholas J. Pauley; Joseph Agusta
- Main IPC: G11C11/14
- IPC: G11C11/14 ; G11C11/16 ; G11C11/15

Abstract:
A multi-free layer magnetic tunnel junction (MTJ) cell includes a bottom electrode layer, an anti-ferromagnetic layer on the bottom electrode layer, a fixed magnetization layer on the anti-ferromagnetic layer and a barrier layer on the fixed magnetization layer. A first free magnetization layer is on a first area of the barrier layer, and a capping layer is on the first free magnetization layer. A free magnetization layer is on a second area of the barrier layer, laterally displaced from the first area, and a capping layer is on the second free magnetization layer. Optionally current switches establish a read current path including the first free magnetization layer concurrent with not establishing a read current path including the second free magnetization layer. Optionally current switches establishing a read current path including the first and second free magnetization layer.
Public/Granted literature
- US20130201757A1 MULTI-FREE LAYER MTJ AND MULTI-TERMINAL READ CIRCUIT WITH CONCURRENT AND DIFFERENTIAL SENSING Public/Granted day:2013-08-08
Information query