MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678
Structural and Magnetic Properties of Magnetic Shape Memory Alloy Ni46Mn41In13 under Magnetic Fields
Kenichi AbematsuRie Y. UmetsuRyosuke KainumaTakeshi KanomataKazuo WatanabeKeiichi Koyama
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2014 Volume 55 Issue 3 Pages 477-481

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Abstract

The structural and magnetic properties of Heusler alloy Ni46Mn41In13 were studied by magnetization and X-ray powder diffraction measurements in the 4.5–350 K temperature range and in magnetic fields up to 5 T. The alloy undergoes martensitic transformation from a L21-type cubic structure with ac = 0.600 nm at 293 K to a six-layered monoclinic (6M) structure in the transition temperature of 160–230 K. The lattice parameters for the 6M structure were estimated to be am = 0.441 nm, bm = 0.557 nm, cm = 1.30 nm, αm = 90.0°, βm = 94.0°, and γm = 90.0° at 75 K. In this transformation from the L21 to 6M structures, the cell volume contracts by 0.34% at 8 K. In addition, we observed the magnetic field-induced reverse transformation of this alloy.

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© 2014 The Japan Institute of Metals and Materials
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