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Magnetic-Field-Induced Strain of Fe-based Ferromagnetic Shape-Memory Alloy in a Pulsed Magnetic Field

Published online by Cambridge University Press:  01 February 2011

Takuo Sakon ,
Takashi Fukuda ,
Hiroyuki Nojiri  and
Tomoyuki Kakeshita
Takuo Sakon
Affiliation:
[email protected], Akita University, Faculty of Engineering and Material Research, Tegatagakuen-machi 1-1, Akita City, 010-8502, Japan, +81-18-889-2354, +81-18-837-0405
Takashi Fukuda
Affiliation:
[email protected], Osaka University, Graduated School of Engineering, Suita City, 565-0871, Japan
Hiroyuki Nojiri
Affiliation:
[email protected], Tohoku University, Institute for Materials Research, Sendai, 980-8577, Japan
Tomoyuki Kakeshita
Affiliation:
[email protected], Osaka University, Graduated School of Engineering, Suita City, 565-0871, Japan
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Abstract

The magnetic field-induced strain (MFIS) of the martensite metallic compound Fe3Pt were studied in a pulsed magnetic field using the capacitance method at low temperatures down to 4.2 K in a martensitic phase, which is much lower than the martensitic transformation temperature TM = 85 K. After zero field cooling, pulse magnetic field with the maximum frequency of 160 Hz was applied parallel to [001]p axis. Large MFIS has been measured. The value of the MFIS is ΔL/L = −1.7 %. When the magnetic field was decreased, the recovery of the strain was observed. At the 2nd shot, the strain of about 0.6 % was observed. It means that MFIS occurs even in short-pulse magnetic fields.

Keywords

ferromagneticmagnetic propertiesmemory
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1050: Symposium BB – Magnetic Shape Memory Alloys , 2007 , 1050-BB05-05
Copyright
Copyright © Materials Research Society 2008

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