The structural and magnetic properties of Mn2-xFe xNiGa Heusler alloys

Hongzhi Luo; Fanbin Meng; Zhongqiu Feng; Yangxian Li; Wei Zhu; Guangheng Wu; Xiaoxi Zhu; Chengbao Jiang; Huibin Xu

doi:10.1063/1.3269722

The structural and magnetic properties of Mn_2-xFe _xNiGa Heusler alloys

Hongzhi Luo^*
, Fanbin Meng
, Zhongqiu Feng
, Yangxian Li
, Wei Zhu
, Guangheng Wu
, Xiaoxi Zhu
, Chengbao Jiang
, Huibin Xu

^*Corresponding author for this work

School of Materials Science and Engineering

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

18 Scopus citations

Abstract

The effect of Fe substitution on the phase transformation and magnetic properties of Mn₂NiGa has been studied. A single bcc phase was obtained in Mn_2-xFe_xNiGa (x=0-0.6). With the substitution of Fe for Mn, the lattice constant decreases gradually. The martensitic transformation can be observed when x=0-0.3. Both the martensitic transformation and austenitic transformation temperatures decrease monotonically with increasing Fe content, which is different from common electron concentration dependence in Ni-Mn-Ga system. The saturation magnetizations M_s of Mn_2-xFe_xNiGa in both austenitic and martensitic phases increase obviously with the doping of Fe, while the variation of T_C shows an opposite tendency. Theoretical calculations indicate that both austenitic and martensitic phases are ferrimagnets. The Fe moment varies from positive to negative after the tetragonal distortion, which leads to the decrease of the saturation magnetization.

Original language	English
Article number	013905
Journal	Journal of Applied Physics
Volume	107
Issue number	1
DOIs	https://doi.org/10.1063/1.3269722
State	Published - 2010

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title = "The structural and magnetic properties of Mn2-xFe xNiGa Heusler alloys",

abstract = "The effect of Fe substitution on the phase transformation and magnetic properties of Mn2NiGa has been studied. A single bcc phase was obtained in Mn2-xFexNiGa (x=0-0.6). With the substitution of Fe for Mn, the lattice constant decreases gradually. The martensitic transformation can be observed when x=0-0.3. Both the martensitic transformation and austenitic transformation temperatures decrease monotonically with increasing Fe content, which is different from common electron concentration dependence in Ni-Mn-Ga system. The saturation magnetizations Ms of Mn2-xFexNiGa in both austenitic and martensitic phases increase obviously with the doping of Fe, while the variation of TC shows an opposite tendency. Theoretical calculations indicate that both austenitic and martensitic phases are ferrimagnets. The Fe moment varies from positive to negative after the tetragonal distortion, which leads to the decrease of the saturation magnetization.",

author = "Hongzhi Luo and Fanbin Meng and Zhongqiu Feng and Yangxian Li and Wei Zhu and Guangheng Wu and Xiaoxi Zhu and Chengbao Jiang and Huibin Xu",

year = "2010",

doi = "10.1063/1.3269722",

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T1 - The structural and magnetic properties of Mn2-xFe xNiGa Heusler alloys

AU - Luo, Hongzhi

AU - Meng, Fanbin

AU - Feng, Zhongqiu

AU - Li, Yangxian

AU - Zhu, Wei

AU - Wu, Guangheng

AU - Zhu, Xiaoxi

AU - Jiang, Chengbao

AU - Xu, Huibin

PY - 2010

Y1 - 2010

N2 - The effect of Fe substitution on the phase transformation and magnetic properties of Mn2NiGa has been studied. A single bcc phase was obtained in Mn2-xFexNiGa (x=0-0.6). With the substitution of Fe for Mn, the lattice constant decreases gradually. The martensitic transformation can be observed when x=0-0.3. Both the martensitic transformation and austenitic transformation temperatures decrease monotonically with increasing Fe content, which is different from common electron concentration dependence in Ni-Mn-Ga system. The saturation magnetizations Ms of Mn2-xFexNiGa in both austenitic and martensitic phases increase obviously with the doping of Fe, while the variation of TC shows an opposite tendency. Theoretical calculations indicate that both austenitic and martensitic phases are ferrimagnets. The Fe moment varies from positive to negative after the tetragonal distortion, which leads to the decrease of the saturation magnetization.

AB - The effect of Fe substitution on the phase transformation and magnetic properties of Mn2NiGa has been studied. A single bcc phase was obtained in Mn2-xFexNiGa (x=0-0.6). With the substitution of Fe for Mn, the lattice constant decreases gradually. The martensitic transformation can be observed when x=0-0.3. Both the martensitic transformation and austenitic transformation temperatures decrease monotonically with increasing Fe content, which is different from common electron concentration dependence in Ni-Mn-Ga system. The saturation magnetizations Ms of Mn2-xFexNiGa in both austenitic and martensitic phases increase obviously with the doping of Fe, while the variation of TC shows an opposite tendency. Theoretical calculations indicate that both austenitic and martensitic phases are ferrimagnets. The Fe moment varies from positive to negative after the tetragonal distortion, which leads to the decrease of the saturation magnetization.

UR - https://www.scopus.com/pages/publications/75649138345

U2 - 10.1063/1.3269722

DO - 10.1063/1.3269722

M3 - 文章

AN - SCOPUS:75649138345

SN - 0021-8979

VL - 107

JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 1

M1 - 013905

ER -

The structural and magnetic properties of Mn_2-xFe _xNiGa Heusler alloys

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