Control of phase transformation temperatures by substituents in Ni-Fe-Ga ferromagnetic shape memory alloys

Haruhiko Morito; Katsunari Oikawa; Asaya Fujita; Kazuaki Fukamichi; Kiyohito Ishida; Ryosuke Kainuma

doi:10.2320/matertrans.MI200714

Control of phase transformation temperatures by substituents in Ni-Fe-Ga ferromagnetic shape memory alloys

Haruhiko Morito, Katsunari Oikawa, Asaya Fujita, Kazuaki Fukamichi, Kiyohito Ishida, Ryosuke Kainuma

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

3 Citations (Scopus)

Abstract

The variations of the martensitic transformation starting temperature T_M^S and the Curie temperature T_C in Ni-Fe-Ga alloys have been investigated by substituting with several kinds of the fourth elements. By partial substitution of Co or Cu for Ni, T_C increases and T_M^S decreases. In particular, the increase of T _C is remarkable in the Ni_54-xCo_xFe ₁₉Ga₂₇ alloy, which is related to the strong Ni-Co and Co-Fe exchange interactions. For the Ni₅₄Fe_19-xMn _xGa₂₇ alloys, T_C slightly increases with the increase of Mn content, in analogy with the Ni₅₂Fe_xMn _21-xGa₂₇ alloys. From the present study, it is demonstrated that both T_C and T_M^S of the Ni-Fe-Ga alloys can be effectively controlled by selecting the substituents.

Original language	English
Pages (from-to)	2847-2850
Number of pages	4
Journal	Materials Transactions
Volume	48
Issue number	11
DOIs	https://doi.org/10.2320/matertrans.MI200714
Publication status	Published - 2007 Nov

Keywords

Curie temperature
Ferromagnetic shape memory alloy
Martensitic transformation
Nickel-iron-gallium alloy
Starting temperature
Substituent

ASJC Scopus subject areas

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

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title = "Control of phase transformation temperatures by substituents in Ni-Fe-Ga ferromagnetic shape memory alloys",

abstract = "The variations of the martensitic transformation starting temperature TMS and the Curie temperature TC in Ni-Fe-Ga alloys have been investigated by substituting with several kinds of the fourth elements. By partial substitution of Co or Cu for Ni, TC increases and TMS decreases. In particular, the increase of T C is remarkable in the Ni54-xCoxFe 19Ga27 alloy, which is related to the strong Ni-Co and Co-Fe exchange interactions. For the Ni54Fe19-xMn xGa27 alloys, TC slightly increases with the increase of Mn content, in analogy with the Ni52FexMn 21-xGa27 alloys. From the present study, it is demonstrated that both TC and TMS of the Ni-Fe-Ga alloys can be effectively controlled by selecting the substituents.",

keywords = "Curie temperature, Ferromagnetic shape memory alloy, Martensitic transformation, Nickel-iron-gallium alloy, Starting temperature, Substituent",

author = "Haruhiko Morito and Katsunari Oikawa and Asaya Fujita and Kazuaki Fukamichi and Kiyohito Ishida and Ryosuke Kainuma",

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T1 - Control of phase transformation temperatures by substituents in Ni-Fe-Ga ferromagnetic shape memory alloys

AU - Morito, Haruhiko

AU - Oikawa, Katsunari

AU - Fujita, Asaya

AU - Fukamichi, Kazuaki

AU - Ishida, Kiyohito

AU - Kainuma, Ryosuke

PY - 2007/11

Y1 - 2007/11

N2 - The variations of the martensitic transformation starting temperature TMS and the Curie temperature TC in Ni-Fe-Ga alloys have been investigated by substituting with several kinds of the fourth elements. By partial substitution of Co or Cu for Ni, TC increases and TMS decreases. In particular, the increase of T C is remarkable in the Ni54-xCoxFe 19Ga27 alloy, which is related to the strong Ni-Co and Co-Fe exchange interactions. For the Ni54Fe19-xMn xGa27 alloys, TC slightly increases with the increase of Mn content, in analogy with the Ni52FexMn 21-xGa27 alloys. From the present study, it is demonstrated that both TC and TMS of the Ni-Fe-Ga alloys can be effectively controlled by selecting the substituents.

AB - The variations of the martensitic transformation starting temperature TMS and the Curie temperature TC in Ni-Fe-Ga alloys have been investigated by substituting with several kinds of the fourth elements. By partial substitution of Co or Cu for Ni, TC increases and TMS decreases. In particular, the increase of T C is remarkable in the Ni54-xCoxFe 19Ga27 alloy, which is related to the strong Ni-Co and Co-Fe exchange interactions. For the Ni54Fe19-xMn xGa27 alloys, TC slightly increases with the increase of Mn content, in analogy with the Ni52FexMn 21-xGa27 alloys. From the present study, it is demonstrated that both TC and TMS of the Ni-Fe-Ga alloys can be effectively controlled by selecting the substituents.

KW - Curie temperature

KW - Ferromagnetic shape memory alloy

KW - Martensitic transformation

KW - Nickel-iron-gallium alloy

KW - Starting temperature

KW - Substituent

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Control of phase transformation temperatures by substituents in Ni-Fe-Ga ferromagnetic shape memory alloys

Abstract

Keywords

ASJC Scopus subject areas

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