Chinese Academy of Sciences

Germantech Co., Ltd.

Houfang Liu

Xiufeng Han

Xiaoguang Zhang

Guoqiang Yu

Xiaoyu Sun

Hongxiang Wei

Jiafeng Feng

Xiangqian Zhou

Qinli Ma

Tian Yu

Jinhu Ai

The present invention relates to a spin torque oscillator with high power output and its applications. A spin torque oscillator may include a first magnetic reference layer having a fixed magnetization, a magnetic precession layer having a magnetization capable of precessing about an initial direction, and a first barrier layer interposed between the first magnetic reference layer and the magnetic precession layer. The first barrier layer is formed of an insulating material capable of inducing a negative differential resistance for the spin torque oscillator.

Spin torque oscillator with high power output and its applications

The invention discloses a magnetic nano-multilayers structure and the method for making it. The multilayer film includes&#x2014;sequentially from one end to the other end&#x2014;a substrate, a bottom layer, a magnetic reference layer, a space layer, a magnetic detecting layer and a cap layer. The, up-stated structure is for convert the information of the rotation of the magnetic moment of the magnetic detecting layer into electrical signals. The magnetic detecting layer is of a pinning structure to react to the magnetic field under detection. On the other hand, the invention sandwiches an intervening layer between the AFM and the FM to mitigate the pinning effect from the exchange bias. Moreover, the thickness of the intervening layer is adjustable to control the pinning effect from the exchange bias. The controllability ensures that the magnetic moments of the magnetic reference layer and the magnetic detecting layer remain at right angles to each other when the external field is zero. The invention achieves a GMR or TMR magnetic sensor exhibiting a linear response and by tuning the thickness of the non-magnetic metallic layer, the sensitivity as well as the detecting range of the devices can be tuned easily.

Magnetic nano-multilayers for magnetic sensors and manufacturing method thereof

Growing community of inventors

Beijing, China

Houfang Liu