Magnetic properties and phase stability of Co2(Ti 1-xMnx)Ga Heusler alloys

A. Okubo; R. Y. Umetsu; R. Kainuma; K. Ishida

doi:10.1088/1742-6596/200/6/062018

Magnetic properties and phase stability of Co₂(Ti _1-xMn_x)Ga Heusler alloys

A. Okubo, R. Y. Umetsu, R. Kainuma, K. Ishida

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

1 Citation (Scopus)

Abstract

Magnetic properties and phase stability of the L2₁ phase in Co₂(Ti_1-xMn_x)Ga alloys were investigated by magnetic and DSC measurements. The order-disorder phase transition temperature from the L2₁ to the B2 phase T_t^L21/B2 was found to increase linearly with increasing Ti composition and its linear extrapolation to x = 0.0 accords with the reported value of T_t ^L21/B2 for the Co₂TiGa alloy. The Curie temperature T _C increases with increasing Mn composition, exhibiting an upward convexity, but is rather independent of composition in the high Mn region. It is concluded that the Co₂(Ti_1-xMn_x)Ga alloys located in the middle composition range possess both a high T_C and a high T_t^L21/B2.

Original language	English
Article number	062018
Journal	Journal of Physics: Conference Series
Volume	200
Issue number	SECTION 6
DOIs	https://doi.org/10.1088/1742-6596/200/6/062018
Publication status	Published - 2010 Jan 1

ASJC Scopus subject areas

Physics and Astronomy(all)

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title = "Magnetic properties and phase stability of Co2(Ti 1-xMnx)Ga Heusler alloys",

abstract = "Magnetic properties and phase stability of the L21 phase in Co2(Ti1-xMnx)Ga alloys were investigated by magnetic and DSC measurements. The order-disorder phase transition temperature from the L21 to the B2 phase TtL21/B2 was found to increase linearly with increasing Ti composition and its linear extrapolation to x = 0.0 accords with the reported value of Tt L21/B2 for the Co2TiGa alloy. The Curie temperature T C increases with increasing Mn composition, exhibiting an upward convexity, but is rather independent of composition in the high Mn region. It is concluded that the Co2(Ti1-xMnx)Ga alloys located in the middle composition range possess both a high TC and a high TtL21/B2.",

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T1 - Magnetic properties and phase stability of Co2(Ti 1-xMnx)Ga Heusler alloys

AU - Okubo, A.

AU - Umetsu, R. Y.

AU - Kainuma, R.

AU - Ishida, K.

PY - 2010/1/1

Y1 - 2010/1/1

N2 - Magnetic properties and phase stability of the L21 phase in Co2(Ti1-xMnx)Ga alloys were investigated by magnetic and DSC measurements. The order-disorder phase transition temperature from the L21 to the B2 phase TtL21/B2 was found to increase linearly with increasing Ti composition and its linear extrapolation to x = 0.0 accords with the reported value of Tt L21/B2 for the Co2TiGa alloy. The Curie temperature T C increases with increasing Mn composition, exhibiting an upward convexity, but is rather independent of composition in the high Mn region. It is concluded that the Co2(Ti1-xMnx)Ga alloys located in the middle composition range possess both a high TC and a high TtL21/B2.

AB - Magnetic properties and phase stability of the L21 phase in Co2(Ti1-xMnx)Ga alloys were investigated by magnetic and DSC measurements. The order-disorder phase transition temperature from the L21 to the B2 phase TtL21/B2 was found to increase linearly with increasing Ti composition and its linear extrapolation to x = 0.0 accords with the reported value of Tt L21/B2 for the Co2TiGa alloy. The Curie temperature T C increases with increasing Mn composition, exhibiting an upward convexity, but is rather independent of composition in the high Mn region. It is concluded that the Co2(Ti1-xMnx)Ga alloys located in the middle composition range possess both a high TC and a high TtL21/B2.

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