Large magnetic-field-induced strains in Ni-Mn-Ga alloys in rotating magnetic field

A. Sozinov; Y. Ezer; G. Kimmel; P. Yakovenko; D. Giller; Y. Wolfus; Y. Yeshurun; K. Ullakko; V. K. Lindroos

doi:10.1051/jp4:2001853

Large magnetic-field-induced strains in Ni-Mn-Ga alloys in rotating magnetic field

A. Sozinov, Y. Ezer, G. Kimmel, P. Yakovenko, D. Giller, Y. Wolfus, Y. Yeshurun, K. Ullakko, V. K. Lindroos

Aalto University

Research output: Contribution to journal › Conference article › peer-review

12 Scopus citations

Abstract

A single-crystal samples of near-stoichiometric Ni₂MnGa alloys with large magnetic field induced strain (MSM effect) at room temperature have been investigated. It was found that there is a reversible reorientation of easy magnetization direction and magnetic domain structure under applied magnetic field. By means of x-ray Laue diffraction method and difractometric analysis it was ascertained that these phenomena are connected with the growth of martensitic twin variant with the short crystallographic axis (c-axis) directed along the applied magnetic field. Furthermore, by means magneto-optical investigations we have found the correlation between martensitic microstructure and magnetic domain structure. The field-induced reorientation of martensite was able to change the dimensional lengths of the samples more than 4.5%.

Original language	English
Pages (from-to)	Pr8311-Pr8316
Journal	Journal De Physique. IV : JP
Volume	11
Issue number	8
DOIs	https://doi.org/10.1051/jp4:2001853
State	Published - Nov 2001
Externally published	Yes
Event	5th European Symposium on Martensitic Transformations and Shape Memory Alloys ESOMAT'2000 - Villa Olmo, Como, Italy Duration: 4 Sep 2000 → 8 Sep 2000

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10.1051/jp4:2001853

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title = "Large magnetic-field-induced strains in Ni-Mn-Ga alloys in rotating magnetic field",

abstract = "A single-crystal samples of near-stoichiometric Ni2MnGa alloys with large magnetic field induced strain (MSM effect) at room temperature have been investigated. It was found that there is a reversible reorientation of easy magnetization direction and magnetic domain structure under applied magnetic field. By means of x-ray Laue diffraction method and difractometric analysis it was ascertained that these phenomena are connected with the growth of martensitic twin variant with the short crystallographic axis (c-axis) directed along the applied magnetic field. Furthermore, by means magneto-optical investigations we have found the correlation between martensitic microstructure and magnetic domain structure. The field-induced reorientation of martensite was able to change the dimensional lengths of the samples more than 4.5%.",

author = "A. Sozinov and Y. Ezer and G. Kimmel and P. Yakovenko and D. Giller and Y. Wolfus and Y. Yeshurun and K. Ullakko and Lindroos, {V. K.}",

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T1 - Large magnetic-field-induced strains in Ni-Mn-Ga alloys in rotating magnetic field

AU - Sozinov, A.

AU - Ezer, Y.

AU - Kimmel, G.

AU - Yakovenko, P.

AU - Giller, D.

AU - Wolfus, Y.

AU - Yeshurun, Y.

AU - Ullakko, K.

AU - Lindroos, V. K.

PY - 2001/11

Y1 - 2001/11

N2 - A single-crystal samples of near-stoichiometric Ni2MnGa alloys with large magnetic field induced strain (MSM effect) at room temperature have been investigated. It was found that there is a reversible reorientation of easy magnetization direction and magnetic domain structure under applied magnetic field. By means of x-ray Laue diffraction method and difractometric analysis it was ascertained that these phenomena are connected with the growth of martensitic twin variant with the short crystallographic axis (c-axis) directed along the applied magnetic field. Furthermore, by means magneto-optical investigations we have found the correlation between martensitic microstructure and magnetic domain structure. The field-induced reorientation of martensite was able to change the dimensional lengths of the samples more than 4.5%.

AB - A single-crystal samples of near-stoichiometric Ni2MnGa alloys with large magnetic field induced strain (MSM effect) at room temperature have been investigated. It was found that there is a reversible reorientation of easy magnetization direction and magnetic domain structure under applied magnetic field. By means of x-ray Laue diffraction method and difractometric analysis it was ascertained that these phenomena are connected with the growth of martensitic twin variant with the short crystallographic axis (c-axis) directed along the applied magnetic field. Furthermore, by means magneto-optical investigations we have found the correlation between martensitic microstructure and magnetic domain structure. The field-induced reorientation of martensite was able to change the dimensional lengths of the samples more than 4.5%.

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T2 - 5th European Symposium on Martensitic Transformations and Shape Memory Alloys ESOMAT'2000

Y2 - 4 September 2000 through 8 September 2000

ER -

Large magnetic-field-induced strains in Ni-Mn-Ga alloys in rotating magnetic field

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