Investigation of the field-induced strain of shape memory alloy in a pulsed magnetic field

Issue title: E-MRS Fall Meeting 2005

Article type: Research Article

Authors: Sakon, T.^{a; *} | Takaha, A.^a | Motokawa, M.^{b; c} | Fukuda, T.^d | Kakeshita, T.^d

Affiliations: [a] Department of Mechanical Engineering, Faculty of Engineering and Resource Science, Akita University, Akita University, Akita City, Akita 010-8502, Japan | [b] Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan | [c] The Institute for Industrial and Science Research, Osaka University, Ibaragi, Osaka 567-0047, Japan | [d] Department of Material Science and Engineering, Graduated School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan

Correspondence: [*] Corresponding author. E-mail: sakon@ipc.akita-u.ac.jp

Abstract: A system for the simultaneous measurement of magnetization and magnetic strain, which is designed to be used in a pulsed magnetic field, has been developed. In this system, a capacitor on a sample is used and its capacitance changes with the displacement of a sample due to the strain on the sample in a magnetic field. Using this system, we have studied the magnetization and magnetic field-induced strain (MFIS) of the martensitic metallic compound Fe-31.2%Pd (at. %) at temperatures down to 80 K in martensite phase, which is much lower than the martensitic transformation temperature T_{M} =230 K. A substantial MFIS has been measured under a pulsed magnetic field with the time constant 6 ms, which corresponds to 80 Hz in frequency.

Keywords: Shape memory alloy, magnetic field-induced strain, capacitance method, pulsed magnetic field

DOI: 10.3233/JAE-2006-712

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 23, no. 1-2, pp. 51-58, 2006