Ni-Mn-Ga-(Co, Fe, Cu) high temperature ferromagnetic shape memory alloys: Effect of Mn and Ga replacement by Cu

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

doi:10.1016/j.scriptamat.2018.05.027

Ni-Mn-Ga-(Co, Fe, Cu) high temperature ferromagnetic shape memory alloys: Effect of Mn and Ga replacement by Cu

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

^*Corresponding author for this work

Lappeenranta University of Technology

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

30 Citations (Scopus)

Abstract

We have studied a tailoring effect of Mn or Ga replacement by Cu in two Ni₄₃Co₇Mn_20-xFe₂Ga₂₁Cu_7+x (x = 0.25, 0.5, 0.75, and 1.0 at. %) and Ni₄₃Co₇Mn₂₀Fe₂Ga_21-xCu_7+x (x = 0.5, 1 and 1.5 at. %) magnetic shape memory alloys with non-modulated tetragonal martensite, to increase the magnetic actuation temperature. A direct correlation between tetragonality ratio (c/a) and the martensitic (MT) and Curie temperatures (T_C) has been disclosed in both alloys series. Some of the studied alloys show a combination of high MT temperature (>370 K) and T_C (>430 K), which extends the reported composition range of high temperature ferromagnetic shape memory alloys.

Original language	English
Pages (from-to)	131-133
Number of pages	3
Journal	Scripta Materialia
Volume	154
DOIs	https://doi.org/10.1016/j.scriptamat.2018.05.027
Publication status	Published - Sept 2018
Externally published	Yes

Keywords

Cu) high temperature ferromagnetic shape memory alloys
Curie temperature
Fe
Martensitic transformation
Ni-Mn-Ga-(Co
Tetragonality ratio

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10.1016/j.scriptamat.2018.05.027

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@article{4458088ec37940f3a5592feceab5187f,

title = "Ni-Mn-Ga-(Co, Fe, Cu) high temperature ferromagnetic shape memory alloys: Effect of Mn and Ga replacement by Cu",

abstract = "We have studied a tailoring effect of Mn or Ga replacement by Cu in two Ni43Co7Mn20-xFe2Ga21Cu7+x (x = 0.25, 0.5, 0.75, and 1.0 at. \%) and Ni43Co7Mn20Fe2Ga21-xCu7+x (x = 0.5, 1 and 1.5 at. \%) magnetic shape memory alloys with non-modulated tetragonal martensite, to increase the magnetic actuation temperature. A direct correlation between tetragonality ratio (c/a) and the martensitic (MT) and Curie temperatures (TC) has been disclosed in both alloys series. Some of the studied alloys show a combination of high MT temperature (>370 K) and TC (>430 K), which extends the reported composition range of high temperature ferromagnetic shape memory alloys.",

keywords = "Cu) high temperature ferromagnetic shape memory alloys, Curie temperature, Fe, Martensitic transformation, Ni-Mn-Ga-(Co, Tetragonality ratio",

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

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd",

year = "2018",

month = sep,

doi = "10.1016/j.scriptamat.2018.05.027",

language = "English",

volume = "154",

pages = "131--133",

journal = "Scripta Materialia",

issn = "1359-6462",

publisher = "Elsevier Ltd.",

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TY - JOUR

T1 - Ni-Mn-Ga-(Co, Fe, Cu) high temperature ferromagnetic shape memory alloys

T2 - Effect of Mn and Ga replacement by Cu

AU - Pérez-Checa, A.

AU - Feuchtwanger, J.

AU - Barandiaran, J. M.

AU - Sozinov, A.

AU - Ullakko, K.

AU - Chernenko, V. A.

PY - 2018/9

Y1 - 2018/9

N2 - We have studied a tailoring effect of Mn or Ga replacement by Cu in two Ni43Co7Mn20-xFe2Ga21Cu7+x (x = 0.25, 0.5, 0.75, and 1.0 at. %) and Ni43Co7Mn20Fe2Ga21-xCu7+x (x = 0.5, 1 and 1.5 at. %) magnetic shape memory alloys with non-modulated tetragonal martensite, to increase the magnetic actuation temperature. A direct correlation between tetragonality ratio (c/a) and the martensitic (MT) and Curie temperatures (TC) has been disclosed in both alloys series. Some of the studied alloys show a combination of high MT temperature (>370 K) and TC (>430 K), which extends the reported composition range of high temperature ferromagnetic shape memory alloys.

AB - We have studied a tailoring effect of Mn or Ga replacement by Cu in two Ni43Co7Mn20-xFe2Ga21Cu7+x (x = 0.25, 0.5, 0.75, and 1.0 at. %) and Ni43Co7Mn20Fe2Ga21-xCu7+x (x = 0.5, 1 and 1.5 at. %) magnetic shape memory alloys with non-modulated tetragonal martensite, to increase the magnetic actuation temperature. A direct correlation between tetragonality ratio (c/a) and the martensitic (MT) and Curie temperatures (TC) has been disclosed in both alloys series. Some of the studied alloys show a combination of high MT temperature (>370 K) and TC (>430 K), which extends the reported composition range of high temperature ferromagnetic shape memory alloys.

KW - Cu) high temperature ferromagnetic shape memory alloys

KW - Curie temperature

KW - Fe

KW - Martensitic transformation

KW - Ni-Mn-Ga-(Co

KW - Tetragonality ratio

UR - https://www.scopus.com/pages/publications/85047651726

U2 - 10.1016/j.scriptamat.2018.05.027

DO - 10.1016/j.scriptamat.2018.05.027

M3 - Article

AN - SCOPUS:85047651726

SN - 1359-6462

VL - 154

SP - 131

EP - 133

JO - Scripta Materialia

JF - Scripta Materialia

ER -

Ni-Mn-Ga-(Co, Fe, Cu) high temperature ferromagnetic shape memory alloys: Effect of Mn and Ga replacement by Cu

Abstract

Keywords

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