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Alternative Current Magnetic Permeability of Fe81Ga19 Alloy with Bias Magnetic Fields

Published online by Cambridge University Press:  15 March 2011

Hongping Zhang ,
Guangheng Wu ,
Zheng Liu ,
Lihong Xu ,
Lei Wang ,
Zhaofu Du ,
Yongmao Pei  and
Dongliang Zhao
Hongping Zhang
Affiliation:
Central Iron and Steel Research Institute, Beijing 100081, China
Guangheng Wu
Affiliation:
Institute of Physics, Chinese Academy of Sciences, Beijing 10080, China
Zheng Liu
Affiliation:
National Library of China, Beijing 100081, China
Lihong Xu
Affiliation:
Central Iron and Steel Research Institute, Beijing 100081, China
Lei Wang
Affiliation:
Central Iron and Steel Research Institute, Beijing 100081, China
Zhaofu Du
Affiliation:
Central Iron and Steel Research Institute, Beijing 100081, China
Yongmao Pei
Affiliation:
Beijing Institute of Technology, Beijing 100081, China
Dongliang Zhao
Affiliation:
Central Iron and Steel Research Institute, Beijing 100081, China
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Abstract

In this study, the AC magnetic permeability of polycrystalline Fe81Ga19 alloy (Galfenol), without crystal orientation under both the bias applied fields and frequencies, was investigated by the method of measuring inductance of ring specimens. The results showed that the AC permeability of the alloy can reach more than 160 Gs/Oe under the conditions of low frequencies or quasi-static state. The permeability decreased with the increase of frequency. When the frequency was higher than 6 kHz, the permeability decreased slowly, and gradually stabilized with the increase of frequency. When applying a little of parallel bias magnetic field, the permeability decreases obviously with the increase of frequency. But applying a perpendicular bias magnetic fields, the permeability of the only initial point of the measuring frequency decreases a little compared to the permeability without bias field.

Keywords

magnetic propertiesalloymagnetic
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1295: Symposium N – Intermetallic-Based Alloys for Structural and Functional Applications , 2011 , mrsf10-1295-n02-08
Copyright
Copyright © Materials Research Society 2011

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References

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