11:30 AM - 11:45 AM
▲ [16a-D704-9] Noise characteristics of tunnel magnetoresistance sensors under AC modulation field
Keywords:Magnetic sensor, tunnel magnetoresistance, 1/f noise
We fabricated tunnel magnetoresistance (TMR) devices with even-function resistance-field response curves with neglisible magnetic hysteresis. We characterized the noise properties under external AC magnetic field which was recently proposed as a method to suppres 1/f noise. However, we confirmed that the 1/f noise originated from the thermal fluctuation of magnetization was transferred by the AC modulation field.