非晶丝磁致伸缩系数的小角转动（SAMR）测量方法

物理测试, 2007, 25(3): 40-0.

非晶丝磁致伸缩系数的小角转动（SAMR）测量方法

张宏浩 , 陈征 , 李德仁 , 卢志超 , 周少雄

钢铁研究总院纳米材料工程技术研究中心，安泰科技股份有限公司研究开发中心，北京100081

Nanomaterials and Engineering Research Center, Central Iron and Steel ResearchInstitute

Research and Development Center, Advanced Technology and Materials Co Ltd, Beijing 100081, China

关键词：非晶合金丝 , SAMR , magnetostriction coefficient

Investigation on Measurement of Magnetostriction Coefficient of Amorphous Wires by Means of Small Angle Magnetization Rotation (SAMR)

ZHANG Honghao , CHEN Zheng , LI Deren , LU Zhichao , ZHOU Shaoxiong

Keywords： amorphous wire , 小角转动法（SAMR） , 磁致伸缩系数

研究了非晶丝材磁致伸缩系数的小角转动测量方法，采用小角转动法(SAMR)测量了Co69.9Si12.5B9Fe5Cr3.5Mo0.1非晶合金丝感应电压的二次谐波信号随直流偏磁场、应力及驱动电流的变化关系，通过对测量条件的优化，测量了非晶丝感生各向异性场随应力的变化关系。得到Co69.9Si12.5B9Fe5Cr3.5Mo0.1非晶丝的磁致伸缩系数λs为1′10-7。

The measurement of the magnetostriction of amorphous wires by the small angle magnetization rotation (SAMR) method was investigated. The dependence of the voltage of second harmonic wave on bias magnet and applied tensile stress and driving current was measured.Under optimal measurement condition, the saturated magnetostriction coefficient, λS, of Co69.9Fe5Si12.5B9Cr3.5Mo0.1 amorphous wire was measured, and the λS of 1×10-7 was obtained.

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