第二篇：大学物理实验巨磁电阻效应及其应用的实验数据

表1：磁阻特性的测量

磁阻/Ω磁阻两端电压4V

磁感应强度/高斯

励磁电流/mA磁感应强度/高斯

30090.432

27081.3888

24072.3456

21063.3024

18054.2592

15045.216

12036.1728

9027.1296

6018.0864

309.0432

154.5216

00

-15-4.5216

-30-9.0432

-60-18.0864

-90-27.1296

-120-36.1728

-150-45.216

-180-54.2592

-210-63.3024

-240-72.3456

-270-81.3888

-300-90.432减小磁场增大磁场磁阻电流/mA磁阻/Ω磁阻电流/mA磁阻/Ω1.872139.041.862150.541.862150.541.852162.161.862150.541.852162.161.862150.541.852162.161.862150.541.852162.161.862150.541.852162.161.862150.541.852162.161.862150.541.852162.161.852162.161.842173.911.762272.731.762272.731.712339.181.712339.181.672395.211.662409.641.72352.941.692366.861.762272.731.742298.851.852162.161.842173.911.862150.541.852162.161.862150.541.852162.161.862150.541.852162.161.862150.541.852162.161.862150.541.852162.161.862150.541.852162.161.862150.541.852162.161.862150.541.852162.16

GMR材料的磁阻特性曲线

表2： 模拟传感器磁电转换特性的测量

磁感应强度/高斯

励磁电流/mA 磁感应强度/高斯

10030.144

9027.1296

8024.1152

7021.1008

6018.0864

5015.072

4012.0576

309.0432

206.0288

103.0144

51.5072

00

-5-1.5072

-10-3.0144

-20-6.0288

-30-9.0432

-40-12.0576

-50-15.072

-60-18.0864

-70-21.1008

-80-24.1152

-90-27.1296

-100-30.144电桥电压4V

输出电压/mV 减小磁场增大磁场0.2080.2080.2080.2080.2070.2070.2060.2060.2030.2030.1830.1820.150.150.110.1090.0720.0710.0340.0350.0180.0180.0020.0020.010.0150.0280.030.0630.0620.1030.1020.1430.1440.1820.1830.2020.2020.2060.2060.2070.2070.2070.2070.2070.208

GMR模拟传感器的磁电转换特性曲线

表3：GMR开关传感器的磁电转换特性测量

减小磁场

励磁电流/A高电平1V 低电平-1V增大磁场励磁电流/A磁感应强度/高斯开关动作磁感应强度/高斯开关动作

关0.026

开0.027

表4：齿轮角位移的测量

转动角度/度输出电压/mV

6.50

9.5-53.4

12.5-69.2

15.5-46.2

18.5-4.7

21.530.1

24.557.5

27.549.8

30.5-0.02

33.5-47.2

36.5-60.7

39.5-38.1

42.5-0.7

45.536.5

48.563.5

51.560.7

54.50.57.84关8.143开0.0267.840.0278.143

高斯