Inverse Wiedemann effect in Fe-Al alloys for torque sensing applications

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• 作者：P. Bobes-Limenes  ; [Author Vitae] ; J.A. Garc&iacute ; a ; ^{joseagd@uniovi.es}  ; [Author Vitae] ; J. Carrizo  ; [Author Vitae] ; M. Rivas  ; [Author Vitae] ; J.C. Mart&iacute ; nez-Garc&iacute ; a  ; [Author Vitae]
• 关键词：Rapid-solidification ; Quenching ; Transition metal alloys and compounds ; Magnetostriction
• 刊名：Sensors and Actuators A ; Physical
• 出版年：2012
• 期刊代码：160_09244247
• 类别：et
• 出版时间：June, 2012
• 卷：180
• 期：Complete
• 页码：45-48
• 文件大小：483 K

摘要

Magnetoelastic effects have proved to be powerful for sensing applications. In this work, the inverse Wiedemann effect (IWE) of melt spun ribbons of Fe-Al with giant magnetostriction is studied. The basic characterization of the IWE response to torsion with no amplification yields a remarkable sensitivity, as high as 68 mV/(rad m^鈭?), with a relative standard deviation of repeatability of only 0.05%, and a linearity error of 0.4%FSR in a range of 卤2 rad m^鈭?. Although the largest magnetostriction has been reported to correspond to 19%Al, Fe₈₃Al₁₇ has a higher Wiedemann effect. The results confirm that quenched Fe-Al ribbons are promising candidates for IWE-based sensing applications.