连续变温霍尔效应测量的程控软件设计  

SOFTWARE DESIGN FOR TEMPERATURE CHANGEABLE HALL-EFFECT MEASUREMENT

作　　者：樊英民[1] 宋小会[2] 张殿琳[2] 

机构地区：[1]西北大学现代物理研究所,西安710069 [2]中国科学院物理研究所,北京100080

出　　处：《低温物理学报》2008年第3期257-260,共4页Low Temperature Physical Letters

摘　　要：反常霍尔效应虽然已被发现一百余年,但对其产生机理现在仍存在不同的观点.本文介绍了一种可连续控温的霍尔效应测量系统.该系统的电路采用相干双交流电桥;在LabVIEW软件平台下,以LabVIEW和C混合编程完成整个系统的控制.该系统可实现从液氦温度到室温的精确控温、仪器的远程控制和数据的采集处理.用于镍薄膜的霍尔测量,效果良好.Hall- effect has been discovered for more than one hundred years, but the underlying mechanics is still not clear. A measurement system for anomalous Hall-effect is reported. The circuit of this system is based on coherent bi-AC bridge. The program is based on LabVIEW and C languages for anomalous Hall-effect measurement. It allows us to control the temperature of the system from liquid Helium temperature up to room temperature. The program is advantageous in easy remote control, as shown in the measurement of Ni films.

关 键 词：反常霍尔效应 PID控温 LABVIEW 

分 类 号：O482[理学—固体物理]