Since MTJ sensor is an element of room temperature operation, low power consumption, low cost and small device size, thus it is expectable to spread widely the medical diagnostics and basic research using bio-magnetic fields. In this study, in order to reduce 1/f noise, 100×100 MTJ sensor arrays were fabricated. Figure shows the system of imperceptible magnetic filed detection. The magnetic field was generated with the one turn coil, using the sine wave of 123 Hz. The result is shown in figure. In this study, the detection of a magnetic field of 0.29 nT was demonstrated with fabricated 100×100 MTJ sensor array.
|Journal||Transactions of Japanese Society for Medical and Biological Engineering|
|Publication status||Published - 2014 Aug 17|
- Bio-magnetic field
- Magnetic tunnel junction
- Tunnel magneto-resistance