Synthesis and magnetic properties of tetragonally ordered Fe2Ni2N alloy using topotactic nitriding reaction

Sho Goto; Hiroaki Kura; Masahito Tsujikawa; Masafumi Shirai; Keita Ito; Takashi Suemasu; Koki Takanashi; Hideto Yanagihara

doi:10.1016/j.jallcom.2021.161122

Synthesis and magnetic properties of tetragonally ordered Fe₂Ni₂N alloy using topotactic nitriding reaction

Sho Goto, Hiroaki Kura, Masahito Tsujikawa, Masafumi Shirai, Keita Ito, Takashi Suemasu, Koki Takanashi, Hideto Yanagihara

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

Abstract

Tetragonally ordered Fe₂Ni₂N powder was successfully synthesized from L1₀-FeNi using a nitrogen topotactic reaction. The magnetic properties and structural stability of the tetragonally ordered Fe₂Ni₂N were examined using first principles calculations. The nitriding process gives 96 wt% of tetragonally ordered Fe₂Ni₂N phase and the rest is the more nitrided phase of FeNiN. Analysis of the crystal structure confirmed that the c/a is 0.989 for the tetragonally ordered Fe₂Ni₂N, which is consistent with the results of the first-principles calculations. Magnetization measurements reveal that the Curie temperature and thermal decomposition temperatures are 441 and 667 K, respectively. The high field magnetization processes at 10 K indicate that the sample contains a component of high magnetic anisotropy energy K_u. The K_u estimated by the law of approach to ferromagnetic saturation is 1.51 MJ/m³, which is in reasonably good agreement with that obtained by the first-principles calculations 1.96 MJ/m³.

Original language	English
Article number	161122
Journal	Journal of Alloys and Compounds
Volume	885
DOIs	https://doi.org/10.1016/j.jallcom.2021.161122
Publication status	Published - 2021 Dec 10

Keywords

Curie temperature
First principles calculations
Magnetism
Nitriding
Topotactic reaction

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Access to Document

10.1016/j.jallcom.2021.161122

Cite this

Synthesis and magnetic properties of tetragonally ordered Fe₂Ni₂N alloy using topotactic nitriding reaction. / Goto, Sho; Kura, Hiroaki; Tsujikawa, Masahito ; Shirai, Masafumi ; Ito, Keita; Suemasu, Takashi; Takanashi, Koki; Yanagihara, Hideto.

In: Journal of Alloys and Compounds, Vol. 885, 161122, 10.12.2021.

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

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title = "Synthesis and magnetic properties of tetragonally ordered Fe2Ni2N alloy using topotactic nitriding reaction",

abstract = "Tetragonally ordered Fe2Ni2N powder was successfully synthesized from L10-FeNi using a nitrogen topotactic reaction. The magnetic properties and structural stability of the tetragonally ordered Fe2Ni2N were examined using first principles calculations. The nitriding process gives 96 wt% of tetragonally ordered Fe2Ni2N phase and the rest is the more nitrided phase of FeNiN. Analysis of the crystal structure confirmed that the c/a is 0.989 for the tetragonally ordered Fe2Ni2N, which is consistent with the results of the first-principles calculations. Magnetization measurements reveal that the Curie temperature and thermal decomposition temperatures are 441 and 667 K, respectively. The high field magnetization processes at 10 K indicate that the sample contains a component of high magnetic anisotropy energy Ku. The Ku estimated by the law of approach to ferromagnetic saturation is 1.51 MJ/m3, which is in reasonably good agreement with that obtained by the first-principles calculations 1.96 MJ/m3.",

keywords = "Curie temperature, First principles calculations, Magnetism, Nitriding, Topotactic reaction",

author = "Sho Goto and Hiroaki Kura and Masahito Tsujikawa and Masafumi Shirai and Keita Ito and Takashi Suemasu and Koki Takanashi and Hideto Yanagihara",

note = "Funding Information: This paper is based on results obtained from the Future Pioneering Program ?Development of magnetic material technology for high-efficiency motors? commissioned by the New Energy and Industrial Technology Development Organization (NEDO), Japan. A part of work performed at U. Tsukuba was supported by KAKENHI (Nos. JP19KK0104 and JP20K21072), Japan. Funding Information: This paper is based on results obtained from the Future Pioneering Program “Development of magnetic material technology for high-efficiency motors” commissioned by the New Energy and Industrial Technology Development Organization (NEDO), Japan. A part of work performed at U. Tsukuba was supported by KAKENHI (Nos. JP19KK0104 and JP20K21072 ), Japan. Publisher Copyright: {\textcopyright} 2021",

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AU - Goto, Sho

AU - Kura, Hiroaki

AU - Tsujikawa, Masahito

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AU - Ito, Keita

AU - Suemasu, Takashi

AU - Takanashi, Koki

AU - Yanagihara, Hideto

N1 - Funding Information: This paper is based on results obtained from the Future Pioneering Program ?Development of magnetic material technology for high-efficiency motors? commissioned by the New Energy and Industrial Technology Development Organization (NEDO), Japan. A part of work performed at U. Tsukuba was supported by KAKENHI (Nos. JP19KK0104 and JP20K21072), Japan. Funding Information: This paper is based on results obtained from the Future Pioneering Program “Development of magnetic material technology for high-efficiency motors” commissioned by the New Energy and Industrial Technology Development Organization (NEDO), Japan. A part of work performed at U. Tsukuba was supported by KAKENHI (Nos. JP19KK0104 and JP20K21072 ), Japan. Publisher Copyright: © 2021

PY - 2021/12/10

Y1 - 2021/12/10

N2 - Tetragonally ordered Fe2Ni2N powder was successfully synthesized from L10-FeNi using a nitrogen topotactic reaction. The magnetic properties and structural stability of the tetragonally ordered Fe2Ni2N were examined using first principles calculations. The nitriding process gives 96 wt% of tetragonally ordered Fe2Ni2N phase and the rest is the more nitrided phase of FeNiN. Analysis of the crystal structure confirmed that the c/a is 0.989 for the tetragonally ordered Fe2Ni2N, which is consistent with the results of the first-principles calculations. Magnetization measurements reveal that the Curie temperature and thermal decomposition temperatures are 441 and 667 K, respectively. The high field magnetization processes at 10 K indicate that the sample contains a component of high magnetic anisotropy energy Ku. The Ku estimated by the law of approach to ferromagnetic saturation is 1.51 MJ/m3, which is in reasonably good agreement with that obtained by the first-principles calculations 1.96 MJ/m3.

AB - Tetragonally ordered Fe2Ni2N powder was successfully synthesized from L10-FeNi using a nitrogen topotactic reaction. The magnetic properties and structural stability of the tetragonally ordered Fe2Ni2N were examined using first principles calculations. The nitriding process gives 96 wt% of tetragonally ordered Fe2Ni2N phase and the rest is the more nitrided phase of FeNiN. Analysis of the crystal structure confirmed that the c/a is 0.989 for the tetragonally ordered Fe2Ni2N, which is consistent with the results of the first-principles calculations. Magnetization measurements reveal that the Curie temperature and thermal decomposition temperatures are 441 and 667 K, respectively. The high field magnetization processes at 10 K indicate that the sample contains a component of high magnetic anisotropy energy Ku. The Ku estimated by the law of approach to ferromagnetic saturation is 1.51 MJ/m3, which is in reasonably good agreement with that obtained by the first-principles calculations 1.96 MJ/m3.

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KW - Topotactic reaction

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