Magnetocrystalline anisotropy in Fe-Mn-Ga magnetic shape memory alloy

T. Omori; K. Watanabe; X. Xu; R. Y. Umetsu; R. Kainuma; K. Ishida

doi:10.1016/j.scriptamat.2010.12.018

Magnetocrystalline anisotropy in Fe-Mn-Ga magnetic shape memory alloy

T. Omori, K. Watanabe, X. Xu, R. Y. Umetsu, R. Kainuma, K. Ishida

Research output: Contribution to journal › Article › peer-review

18 Citations (Scopus)

Abstract

Magnetocrystalline anisotropy of the martensite phase was investigated in a single crystal of Fe₄₄Mn₂₈Ga₂₈ shape memory alloy. It was found that the martensite phase of Fe₄₄Mn ₂₈Ga₂₈ alloy has a tetragonal distorted L2₁ structure, with a = 0.5368 nm and c = 0.7081 nm. An approximately single variant was obtained by thermomechanical treatment, and magnetization measurement revealed that the c-axis is the magnetic easy axis. The magnetocrystalline anisotropy constant K_u was determined to be 7.6 × 10 ⁵ J m^-3 at 300 K.

Original language	English
Pages (from-to)	669-672
Number of pages	4
Journal	Scripta Materialia
Volume	64
Issue number	7
DOIs	https://doi.org/10.1016/j.scriptamat.2010.12.018
Publication status	Published - 2011 Apr

Keywords

Ferromagnetic shape memory alloy
Iron alloys
Magnetic anisotropy
Martensitic phase transformation

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

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title = "Magnetocrystalline anisotropy in Fe-Mn-Ga magnetic shape memory alloy",

abstract = "Magnetocrystalline anisotropy of the martensite phase was investigated in a single crystal of Fe44Mn28Ga28 shape memory alloy. It was found that the martensite phase of Fe44Mn 28Ga28 alloy has a tetragonal distorted L21 structure, with a = 0.5368 nm and c = 0.7081 nm. An approximately single variant was obtained by thermomechanical treatment, and magnetization measurement revealed that the c-axis is the magnetic easy axis. The magnetocrystalline anisotropy constant Ku was determined to be 7.6 × 10 5 J m-3 at 300 K.",

keywords = "Ferromagnetic shape memory alloy, Iron alloys, Magnetic anisotropy, Martensitic phase transformation",

author = "T. Omori and K. Watanabe and X. Xu and Umetsu, {R. Y.} and R. Kainuma and K. Ishida",

note = "Funding Information: This study was supported by a Grant-in-Aid for Scientific Research from the Japan Society for the Promotion of Science (JSPS) and by the Global COE Program “Materials Integration (International Center of Education and Research), Tohoku University”, MEXT, Japan. A part of this work was carried out at the Center for Low Temperature Science, Institute for Materials Research, Tohoku University. The authors wish to thank Dr. H. Morito of Tohoku University for his useful advice regarding the measurement of magnetic anisotropy.",

year = "2011",

month = apr,

doi = "10.1016/j.scriptamat.2010.12.018",

language = "English",

volume = "64",

pages = "669--672",

journal = "Scripta Materialia",

issn = "1359-6462",

publisher = "Elsevier Limited",

number = "7",

}

TY - JOUR

T1 - Magnetocrystalline anisotropy in Fe-Mn-Ga magnetic shape memory alloy

AU - Omori, T.

AU - Watanabe, K.

AU - Xu, X.

AU - Umetsu, R. Y.

AU - Kainuma, R.

AU - Ishida, K.

N1 - Funding Information: This study was supported by a Grant-in-Aid for Scientific Research from the Japan Society for the Promotion of Science (JSPS) and by the Global COE Program “Materials Integration (International Center of Education and Research), Tohoku University”, MEXT, Japan. A part of this work was carried out at the Center for Low Temperature Science, Institute for Materials Research, Tohoku University. The authors wish to thank Dr. H. Morito of Tohoku University for his useful advice regarding the measurement of magnetic anisotropy.

PY - 2011/4

Y1 - 2011/4

N2 - Magnetocrystalline anisotropy of the martensite phase was investigated in a single crystal of Fe44Mn28Ga28 shape memory alloy. It was found that the martensite phase of Fe44Mn 28Ga28 alloy has a tetragonal distorted L21 structure, with a = 0.5368 nm and c = 0.7081 nm. An approximately single variant was obtained by thermomechanical treatment, and magnetization measurement revealed that the c-axis is the magnetic easy axis. The magnetocrystalline anisotropy constant Ku was determined to be 7.6 × 10 5 J m-3 at 300 K.

AB - Magnetocrystalline anisotropy of the martensite phase was investigated in a single crystal of Fe44Mn28Ga28 shape memory alloy. It was found that the martensite phase of Fe44Mn 28Ga28 alloy has a tetragonal distorted L21 structure, with a = 0.5368 nm and c = 0.7081 nm. An approximately single variant was obtained by thermomechanical treatment, and magnetization measurement revealed that the c-axis is the magnetic easy axis. The magnetocrystalline anisotropy constant Ku was determined to be 7.6 × 10 5 J m-3 at 300 K.

KW - Ferromagnetic shape memory alloy

KW - Iron alloys

KW - Magnetic anisotropy

KW - Martensitic phase transformation

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UR - http://www.scopus.com/inward/citedby.url?scp=79251601264&partnerID=8YFLogxK

U2 - 10.1016/j.scriptamat.2010.12.018

DO - 10.1016/j.scriptamat.2010.12.018

M3 - Article

AN - SCOPUS:79251601264

VL - 64

SP - 669

EP - 672

JO - Scripta Materialia

JF - Scripta Materialia

SN - 1359-6462

IS - 7

ER -

Magnetocrystalline anisotropy in Fe-Mn-Ga magnetic shape memory alloy

Abstract

Keywords

ASJC Scopus subject areas

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