LONG Liang, ZHONG Shao-long, WU Ya-ming. Design and fabrication of MEMS magnetic sensor based on permanent magnetic film[J]. 2014, 33(5): 59-61+65. DOI: 10.13873/j.1000-97872014.05.035.
A novel MEMS magnetic sensor based on permanent magnetic film is proposed
including a MEMS torsional pendulum
a CoNiMnP permanent magnetic film and differential detection capacitances. Theories of magnetic sensing and capacitive detection are analyzed and structure parameters are presented and model simulation of the device is carried out. MEMS magnetic sensor sample are fabricated successfully by MEMS process technology and it is tested. The test results show that the MEMS magnetic sensor has good linearity
its capacitance sensitivity is 27. 7 fF / mT. Magnetic field resolution of sensor can reach 36nT
according to existing micro capacitance detection technology.
关键词
Keywords
references
MEMS magnetic field sensor based on silicon bridge structure [J]. 杜广涛,陈向东,林其斌,李辉,郭辉辉. 半导体学报 . 2010(10)