Two‐transistor and two‐magnetic‐tunnel‐junction multi‐level cell structured spin‐transfer torque magnetic random access memory with optimisations on power and reliability

2016 ◽  
Vol 52 (2) ◽  
pp. 104-105 ◽  
Author(s):  
Zihao Tao ◽  
Ze Jia
Keyword(s):  
Tunnel Junction ◽  
Random Access ◽  
Magnetic Tunnel Junction ◽  
Random Access Memory ◽  
Spin Transfer Torque ◽  
Spin Transfer ◽  
Access Memory ◽  
Magnetic Random Access Memory ◽  
Multi Level

WRITE ERROR RATE IN SPIN TRANSFER TORQUE MAGNETIC RANDOM ACCESS MEMORY

SPIN ◽  
2012 ◽  
Vol 02 (03) ◽  
pp. 1240001 ◽  
Author(s):  
ZIHUI WANG ◽  
YUCHEN ZHOU ◽  
JING ZHANG ◽  
YIMING HUAI
Keyword(s):  
Error Rate ◽  
Random Access ◽  
Magnetic Tunnel Junction ◽  
Random Access Memory ◽  
Underlying Mechanism ◽  
Theoretical Description ◽  
Spin Transfer Torque ◽  
Spin Transfer ◽  
Access Memory ◽  
Magnetic Random Access Memory

This paper reviews the recent progress made to realize reliable write operations in spin transfer torque magnetic random access memory. Theoretical description of write error rate (WER) based on macro-spin models are discussed with comparison to experimental data. Recent studies on the phenomena that can lead to abnormal WER behaviors which include back-hopping and low probability bifurcated switching are reviewed with emphasis on underlying mechanism. The studies on the WER in perpendicular magnetic tunnel junction (MTJ) are also reviewed. It is demonstrated that, for both in-plane and perpendicular MTJ, reliable and error-free write operations can be achieved with thorough understanding of the underlying physics and innovative design/process solutions.

Development of Hard Mask Process on Magnetic Tunnel Junction for a 4-Mbit Magnetic Random Access Memory

2007 ◽  
Vol 46 (7A) ◽  
pp. 4121-4124 ◽  
Author(s):  
Kiyokazu Nagahara ◽  
Tomonori Mukai ◽  
Hiromitsu Hada ◽  
Nobuyuki Ishiwata ◽  
Naoki Kasai ◽  
...  
Keyword(s):  
Tunnel Junction ◽  
Random Access ◽  
Magnetic Tunnel Junction ◽  
Random Access Memory ◽  
Access Memory ◽  
Hard Mask ◽  
Magnetic Random Access Memory
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