High temperature Ni45Co5Mn25 − xFexGa20Cu5 ferromagnetic shape memory alloys

A. Pérez-Checa; J. Feuchtwanger; D. Musiienko; A. Sozinov; J. M. Barandiaran; K. Ullakko; V. A. Chernenko

doi:10.1016/j.scriptamat.2017.03.002

High temperature Ni₄₅Co₅Mn_{25 − x}Fe_xGa₂₀Cu₅ ferromagnetic shape memory alloys

A. Pérez-Checa
, J. Feuchtwanger
, D. Musiienko
, A. Sozinov
, J. M. Barandiaran
, K. Ullakko
, V. A. Chernenko^*

^*Corresponding author for this work

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

16 Citations (Scopus)

Abstract

We anticipated that replacing Mn by Fe in the Ni_{50 − y}Co_yMn_{25 − x}Fe_xGa_{25 − z}Cu_z magnetic shape memory alloys would increase their Curie temperature and spontaneous magnetization. In particular, in the set of alloys Ni₄₅Co₅Mn_{25 − x}Fe_xGa₂₀Cu₅ (x = 0, …8), a record-breaking combination of high martensitic transformation temperature (400 K) and Curie temperature (458 K) has been achieved for Ni₄₅Co₅Mn₂₁Fe₄Ga₂₀Cu₅. This alloy shows a non-modulated tetragonal martensite with the lowest lattice distortion ratio, c/a = 1.15, near the reverse martensitic transformation temperature. Because of the high Curie temperature and low c/a ratio, the Ni₄₅Co₅Mn_{25 − x}Fe_xGa₂₀Cu₅ and Ni_{50 − y}Co_yMn_{25 − x}Fe_xGa_{25 − z}Cu_z alloys are promising candidates for high temperature magnetic shape memory applications.

Original language	English
Pages (from-to)	119-122
Number of pages	4
Journal	Scripta Materialia
Volume	134
DOIs	https://doi.org/10.1016/j.scriptamat.2017.03.002
Publication status	Published - 1 Jun 2017
Externally published	Yes

Keywords

Curie temperature
Magnetic shape memory alloys
Martensitic transformation
NiCoMnFeGaCu
Tetragonality ratio

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10.1016/j.scriptamat.2017.03.002

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@article{464199d3ed21420ebfaf42bbd799cce2,

title = "High temperature Ni45Co5Mn25 − xFexGa20Cu5 ferromagnetic shape memory alloys",

abstract = "We anticipated that replacing Mn by Fe in the Ni50 − yCoyMn25 − xFexGa25 − zCuz magnetic shape memory alloys would increase their Curie temperature and spontaneous magnetization. In particular, in the set of alloys Ni45Co5Mn25 − xFexGa20Cu5 (x = 0, …8), a record-breaking combination of high martensitic transformation temperature (400 K) and Curie temperature (458 K) has been achieved for Ni45Co5Mn21Fe4Ga20Cu5. This alloy shows a non-modulated tetragonal martensite with the lowest lattice distortion ratio, c/a = 1.15, near the reverse martensitic transformation temperature. Because of the high Curie temperature and low c/a ratio, the Ni45Co5Mn25 − xFexGa20Cu5 and Ni50 − yCoyMn25 − xFexGa25 − zCuz alloys are promising candidates for high temperature magnetic shape memory applications.",

keywords = "Curie temperature, Magnetic shape memory alloys, Martensitic transformation, NiCoMnFeGaCu, Tetragonality ratio",

author = "A. P{\'e}rez-Checa and J. Feuchtwanger and D. Musiienko and A. Sozinov and Barandiaran, \{J. M.\} and K. Ullakko and Chernenko, \{V. A.\}",

note = "Publisher Copyright: {\textcopyright} 2017 Acta Materialia Inc.",

year = "2017",

month = jun,

day = "1",

doi = "10.1016/j.scriptamat.2017.03.002",

language = "English",

volume = "134",

pages = "119--122",

journal = "Scripta Materialia",

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TY - JOUR

T1 - High temperature Ni45Co5Mn25 − xFexGa20Cu5 ferromagnetic shape memory alloys

AU - Pérez-Checa, A.

AU - Feuchtwanger, J.

AU - Musiienko, D.

AU - Sozinov, A.

AU - Barandiaran, J. M.

AU - Ullakko, K.

AU - Chernenko, V. A.

PY - 2017/6/1

Y1 - 2017/6/1

N2 - We anticipated that replacing Mn by Fe in the Ni50 − yCoyMn25 − xFexGa25 − zCuz magnetic shape memory alloys would increase their Curie temperature and spontaneous magnetization. In particular, in the set of alloys Ni45Co5Mn25 − xFexGa20Cu5 (x = 0, …8), a record-breaking combination of high martensitic transformation temperature (400 K) and Curie temperature (458 K) has been achieved for Ni45Co5Mn21Fe4Ga20Cu5. This alloy shows a non-modulated tetragonal martensite with the lowest lattice distortion ratio, c/a = 1.15, near the reverse martensitic transformation temperature. Because of the high Curie temperature and low c/a ratio, the Ni45Co5Mn25 − xFexGa20Cu5 and Ni50 − yCoyMn25 − xFexGa25 − zCuz alloys are promising candidates for high temperature magnetic shape memory applications.

AB - We anticipated that replacing Mn by Fe in the Ni50 − yCoyMn25 − xFexGa25 − zCuz magnetic shape memory alloys would increase their Curie temperature and spontaneous magnetization. In particular, in the set of alloys Ni45Co5Mn25 − xFexGa20Cu5 (x = 0, …8), a record-breaking combination of high martensitic transformation temperature (400 K) and Curie temperature (458 K) has been achieved for Ni45Co5Mn21Fe4Ga20Cu5. This alloy shows a non-modulated tetragonal martensite with the lowest lattice distortion ratio, c/a = 1.15, near the reverse martensitic transformation temperature. Because of the high Curie temperature and low c/a ratio, the Ni45Co5Mn25 − xFexGa20Cu5 and Ni50 − yCoyMn25 − xFexGa25 − zCuz alloys are promising candidates for high temperature magnetic shape memory applications.

KW - Curie temperature

KW - Magnetic shape memory alloys

KW - Martensitic transformation

KW - NiCoMnFeGaCu

KW - Tetragonality ratio

UR - https://www.scopus.com/pages/publications/85015722752

U2 - 10.1016/j.scriptamat.2017.03.002

DO - 10.1016/j.scriptamat.2017.03.002

M3 - Article

AN - SCOPUS:85015722752

SN - 1359-6462

VL - 134

SP - 119

EP - 122

JO - Scripta Materialia

JF - Scripta Materialia

ER -

High temperature Ni₄₅Co₅Mn_{25 − x}Fe_xGa₂₀Cu₅ ferromagnetic shape memory alloys

Abstract

Keywords

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