Magnetic properties of ferromagnetic shape memory alloys Ni 2-xCuxMnGa

Takeshi Kanomata; Takuji Nozawa; Daisuke Kikuchi; Hironori Nishihara; Keiichi Koyama; Kazuo Watanabe

doi:10.3233/jae-2005-679

Magnetic properties of ferromagnetic shape memory alloys Ni _2-xCu_xMnGa

Takeshi Kanomata, Takuji Nozawa, Daisuke Kikuchi, Hironori Nishihara, Keiichi Koyama, Kazuo Watanabe

High Field Laboratory for Superconducting Materials

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

26 Citations (Scopus)

Abstract

Magnetic measurements on Ni_2-xCu_xMnGa with 0 ≦ x ≦ 0.8 are made in the temperature range between 4.2 K and 440 K. A phase diagram of Ni_2-xCu_xMnGa is determined from the results of the temperature dependence of the initial permeability. The Curie temperature T_C increases with the Cu concentration x. The martensitic and reverse martensitic transformation temperatures decrease abruptly with x. It is deduced that the substitution for Ni by Cu in Ni₂ MnGa promotes to localize the magnetic moment of Mn atom.

Original language	English
Pages (from-to)	151-157
Number of pages	7
Journal	International Journal of Applied Electromagnetics and Mechanics
Volume	21
Issue number	3-4
DOIs	https://doi.org/10.3233/jae-2005-679
Publication status	Published - 2005

Keywords

Ferromagnetic shape memory alloy
Magnetic moment
NiCuMnGa
Phase diagram
Phase transformation

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Electrical and Electronic Engineering

Access to Document

10.3233/jae-2005-679

Cite this

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title = "Magnetic properties of ferromagnetic shape memory alloys Ni 2-xCuxMnGa",

abstract = "Magnetic measurements on Ni2-xCuxMnGa with 0 ≦ x ≦ 0.8 are made in the temperature range between 4.2 K and 440 K. A phase diagram of Ni2-xCuxMnGa is determined from the results of the temperature dependence of the initial permeability. The Curie temperature TC increases with the Cu concentration x. The martensitic and reverse martensitic transformation temperatures decrease abruptly with x. It is deduced that the substitution for Ni by Cu in Ni2 MnGa promotes to localize the magnetic moment of Mn atom.",

keywords = "Ferromagnetic shape memory alloy, Magnetic moment, NiCuMnGa, Phase diagram, Phase transformation",

author = "Takeshi Kanomata and Takuji Nozawa and Daisuke Kikuchi and Hironori Nishihara and Keiichi Koyama and Kazuo Watanabe",

year = "2005",

doi = "10.3233/jae-2005-679",

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pages = "151--157",

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T1 - Magnetic properties of ferromagnetic shape memory alloys Ni 2-xCuxMnGa

AU - Kanomata, Takeshi

AU - Nozawa, Takuji

AU - Kikuchi, Daisuke

AU - Nishihara, Hironori

AU - Koyama, Keiichi

AU - Watanabe, Kazuo

PY - 2005

Y1 - 2005

N2 - Magnetic measurements on Ni2-xCuxMnGa with 0 ≦ x ≦ 0.8 are made in the temperature range between 4.2 K and 440 K. A phase diagram of Ni2-xCuxMnGa is determined from the results of the temperature dependence of the initial permeability. The Curie temperature TC increases with the Cu concentration x. The martensitic and reverse martensitic transformation temperatures decrease abruptly with x. It is deduced that the substitution for Ni by Cu in Ni2 MnGa promotes to localize the magnetic moment of Mn atom.

AB - Magnetic measurements on Ni2-xCuxMnGa with 0 ≦ x ≦ 0.8 are made in the temperature range between 4.2 K and 440 K. A phase diagram of Ni2-xCuxMnGa is determined from the results of the temperature dependence of the initial permeability. The Curie temperature TC increases with the Cu concentration x. The martensitic and reverse martensitic transformation temperatures decrease abruptly with x. It is deduced that the substitution for Ni by Cu in Ni2 MnGa promotes to localize the magnetic moment of Mn atom.

KW - Ferromagnetic shape memory alloy

KW - Magnetic moment

KW - NiCuMnGa

KW - Phase diagram

KW - Phase transformation

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JF - International journal of applied electromagnetics in materials

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