Intrinsic hard magnetic properties of Sm(Fe1 − xCox)12 compound with the ThMn12 structure

Y. Hirayama; Y. K. Takahashi; S. Hirosawa; K. Hono

doi:10.1016/j.scriptamat.2017.05.029

Intrinsic hard magnetic properties of Sm(Fe_1 − xCo_x)₁₂ compound with the ThMn₁₂ structure

Y. Hirayama, Y. K. Takahashi, S. Hirosawa, K. Hono^*

^*Corresponding author for this work

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

129 Citations (Scopus)

Abstract

We have grown Sm(Fe_1 − xCo_x)₁₂ (x = 0, 0.1 and 0.2) films epitaxially on V(001) buffered MgO(001) single crystalline substrates in order to investigate the intrinsic hard magnetic properties of the Co substituted SmFe₁₂ phase with the ThMn₁₂ structure. We found Sm(Fe_0.8Co_0.2)₁₂ has excellent intrinsic hard magnetic properties with spontaneous magnetization of 1.78 T, anisotropy field of 12 T and Curie temperature of 859 K, all of which are superior to those for Nd₂Fe₁₄B. Hence, the Sm(Fe_0.8Co_0.2)₁₂ compound is promising as permanent magnet material, if it can be stabilized in a bulk form.

Original language	English
Pages (from-to)	62-65
Number of pages	4
Journal	Scripta Materialia
Volume	138
DOIs	https://doi.org/10.1016/j.scriptamat.2017.05.029
Publication status	Published - 2017 Sept
Externally published	Yes

Keywords

Hard magnet
Permanent magnet
SmFe
ThMn structure

ASJC Scopus subject areas

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

Access to Document

10.1016/j.scriptamat.2017.05.029

Cite this

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title = "Intrinsic hard magnetic properties of Sm(Fe1 − xCox)12 compound with the ThMn12 structure",

abstract = "We have grown Sm(Fe1 − xCox)12 (x = 0, 0.1 and 0.2) films epitaxially on V(001) buffered MgO(001) single crystalline substrates in order to investigate the intrinsic hard magnetic properties of the Co substituted SmFe12 phase with the ThMn12 structure. We found Sm(Fe0.8Co0.2)12 has excellent intrinsic hard magnetic properties with spontaneous magnetization of 1.78 T, anisotropy field of 12 T and Curie temperature of 859 K, all of which are superior to those for Nd2Fe14B. Hence, the Sm(Fe0.8Co0.2)12 compound is promising as permanent magnet material, if it can be stabilized in a bulk form.",

keywords = "Hard magnet, Permanent magnet, SmFe, ThMn structure",

author = "Y. Hirayama and Takahashi, {Y. K.} and S. Hirosawa and K. Hono",

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doi = "10.1016/j.scriptamat.2017.05.029",

language = "English",

volume = "138",

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T1 - Intrinsic hard magnetic properties of Sm(Fe1 − xCox)12 compound with the ThMn12 structure

AU - Hirayama, Y.

AU - Takahashi, Y. K.

AU - Hirosawa, S.

AU - Hono, K.

PY - 2017/9

Y1 - 2017/9

N2 - We have grown Sm(Fe1 − xCox)12 (x = 0, 0.1 and 0.2) films epitaxially on V(001) buffered MgO(001) single crystalline substrates in order to investigate the intrinsic hard magnetic properties of the Co substituted SmFe12 phase with the ThMn12 structure. We found Sm(Fe0.8Co0.2)12 has excellent intrinsic hard magnetic properties with spontaneous magnetization of 1.78 T, anisotropy field of 12 T and Curie temperature of 859 K, all of which are superior to those for Nd2Fe14B. Hence, the Sm(Fe0.8Co0.2)12 compound is promising as permanent magnet material, if it can be stabilized in a bulk form.

AB - We have grown Sm(Fe1 − xCox)12 (x = 0, 0.1 and 0.2) films epitaxially on V(001) buffered MgO(001) single crystalline substrates in order to investigate the intrinsic hard magnetic properties of the Co substituted SmFe12 phase with the ThMn12 structure. We found Sm(Fe0.8Co0.2)12 has excellent intrinsic hard magnetic properties with spontaneous magnetization of 1.78 T, anisotropy field of 12 T and Curie temperature of 859 K, all of which are superior to those for Nd2Fe14B. Hence, the Sm(Fe0.8Co0.2)12 compound is promising as permanent magnet material, if it can be stabilized in a bulk form.

KW - Hard magnet

KW - Permanent magnet

KW - SmFe

KW - ThMn structure

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