TY  - CONF
ID  - SisLab1568
UR  - https://eprints.uet.vnu.edu.vn/eprints/id/eprint/1568/
A1  - Le, Khac Quynh
A1  - Bui, Dinh Tu
A1  - D., Q. Viet
A1  - N., T. Thuy
A1  - Nguyen, Xuan Toan
A1  - Tran, Mau Danh
A1  - Nguyen, Huu Duc
A1  - Do, Thi Huong Giang
Y1  - 2016/03/26/
N2  - Fabrication and study of sensors applied to measure low magnetic fields whose the Wheatstone structure basing on anisotropic magnetoresistance effects. The configuration optimatization of sensors was conducted by varying the thickness of NiFe layers (5, 10, 15 nm) as well as the structure of resistive bars. Two types of sensor with the sizes of 50×250 ?m and 10×250 ?m were examined. The results revealed the significant dependence of sensor signals on sensor shape anisotropy. The resistivie difference (?R), the sensitity (SH) and the shape anisotropy were observed to increase as decreasing the thickness of NiFe layer. The highest values (?R and SH were obtained to be 10? and 0.88 ?/Oe (~ 0,88 mV/Oe), respectively) were found in the sensor with the size of 10×250 ?m and 5 nm-thickness. The function of the output voltage versus the Earth's magnetic field and the sensor axis was fitted to be V = A + B*cos? (A, B are empirical constants), and S? = 8.8 (?V/deg.)
TI  - Research, manufacturing optimal structure sensor measure the low magnetic field structure Wheatstone bridge base on anistropic magnetoresistance effects
M2  - Hanoi
AV  - public
T2  - SW4PHD: the 2016 Scientific Workshop for PhD Students
ER  -