Optical imaging and magnetocaloric effect measurements in pulsed high magnetic fields and their application to Ni-Co-Mn-In Heusler alloy

被引：14

作者：

Kihara, T. ^{[1
]}

Katakura, I. ^{[1
]}

Tokunaga, M. ^{[1
]}

Matsuo, A. ^{[1
]}

Kawaguchi, K. ^{[1
]}

Kondo, A. ^{[1
]}

Kindo, K. ^{[1
]}

Ito, W. ^{[2
]}

Xu, X. ^{[3
]}

Kainuma, R. ^{[3
]}

机构：

[1] Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan

[2] Sendai Natl Coll Technol, Medeshima Shiote 9811239, Japan

[3] Tohoku Univ, Grad Sch Engn, Dept Mat Sci, Sendai, Miyagi 9808579, Japan

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2013年 / 577卷

关键词：

High magnetic fields; Magnetocaloric effect; Microscopy; Shape memory alloys;

D O I：

10.1016/j.jallcom.2012.02.018

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

As novel tools to study magnetic shape memory alloys, a high-speed optical microscope system and a measurement system of magnetocaloric effects (MCEs) in pulsed magnetic fields are developed. Using the high-speed imaging system, successive changes in the surface morphology are visualized in the process of magnetic field-induced reverse martensitic transformation in Ni45Co5Mn36.7In13.3. The MCEs of Gd studied in pulsed fields show reasonable agreement with the earlier results obtained in steady fields. Application of high magnetic fields up to 55T realizes a gigantic adiabatic heating of 63 K.(C) 2012 Elsevier B.V. All rights reserved.

引用

页码：S722 / S725

页数：4

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