Evidence for magnetic state of uranium in U2(Fe1-xCox)13.6Si3.4

A. V. Andreev; Y. Homma; T. Komatsubara; Y. Shiokawa; I. Satoh

doi:10.1016/j.jallcom.2005.11.044

Evidence for magnetic state of uranium in U₂(Fe_1-xCo_x)_13.6Si_3.4

A. V. Andreev, Y. Homma, T. Komatsubara, Y. Shiokawa, I. Satoh

金属材料研究所・材料プロセス・評価研究部

研究成果: Article › 査読

2 被引用数 (Scopus)

抄録

Single crystals of solid solutions U₂(Fe_1-xCo_x)_13.6Si_3.4 (0 ≤ x ≤ 1) having the hexagonal Th₂Ni₁₇ crystal structure were grown by a Czochralski method. Magnetization measurements along the principal axes reveal the easy-plane magnetic anisotropy in compounds with x up to 0.95, whereas terminal compound U₂Co_13.6Si_3.4 has the uniaxial anisotropy. Magnitudes of the anisotropy constants K₁ and K₂ for x up to ∼0.8 are high enough to suggest a U contribution to the anisotropy, i.e., a magnetic state of U. The observed rapid weakening of the anisotropy and the change of its type at highest Co content are attributed to the 3d-metal sublattice, namely to the considerable change of c/a ratio at the Fe{single bond}Co substitution in the "dumbbells".

本文言語	English
ページ（範囲）	6-11
ページ数	6
ジャーナル	Journal of Alloys and Compounds
巻	422
号	1-2
DOI	https://doi.org/10.1016/j.jallcom.2005.11.044
出版ステータス	Published - 2006 9 28

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

文献へのアクセス

10.1016/j.jallcom.2005.11.044

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引用スタイル

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abstract = "Single crystals of solid solutions U2(Fe1-xCox)13.6Si3.4 (0 ≤ x ≤ 1) having the hexagonal Th2Ni17 crystal structure were grown by a Czochralski method. Magnetization measurements along the principal axes reveal the easy-plane magnetic anisotropy in compounds with x up to 0.95, whereas terminal compound U2Co13.6Si3.4 has the uniaxial anisotropy. Magnitudes of the anisotropy constants K1 and K2 for x up to ∼0.8 are high enough to suggest a U contribution to the anisotropy, i.e., a magnetic state of U. The observed rapid weakening of the anisotropy and the change of its type at highest Co content are attributed to the 3d-metal sublattice, namely to the considerable change of c/a ratio at the Fe{single bond}Co substitution in the {"}dumbbells{"}.",

keywords = "Ferromagnetism, Magnetic anisotropy, RFe, Single crystals, Uranium intermetallics",

author = "Andreev, {A. V.} and Y. Homma and T. Komatsubara and Y. Shiokawa and I. Satoh",

note = "Funding Information: The authors thank J. Miyashita for the help in experiments. This work is a part of the research project AVOZ10100520 and has been supported by grants GACR 202/03/0550 and GAAV IAA100100530. Copyright: Copyright 2008 Elsevier B.V., All rights reserved.",

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AU - Andreev, A. V.

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AU - Komatsubara, T.

AU - Shiokawa, Y.

AU - Satoh, I.

N1 - Funding Information: The authors thank J. Miyashita for the help in experiments. This work is a part of the research project AVOZ10100520 and has been supported by grants GACR 202/03/0550 and GAAV IAA100100530. Copyright: Copyright 2008 Elsevier B.V., All rights reserved.

PY - 2006/9/28

Y1 - 2006/9/28

N2 - Single crystals of solid solutions U2(Fe1-xCox)13.6Si3.4 (0 ≤ x ≤ 1) having the hexagonal Th2Ni17 crystal structure were grown by a Czochralski method. Magnetization measurements along the principal axes reveal the easy-plane magnetic anisotropy in compounds with x up to 0.95, whereas terminal compound U2Co13.6Si3.4 has the uniaxial anisotropy. Magnitudes of the anisotropy constants K1 and K2 for x up to ∼0.8 are high enough to suggest a U contribution to the anisotropy, i.e., a magnetic state of U. The observed rapid weakening of the anisotropy and the change of its type at highest Co content are attributed to the 3d-metal sublattice, namely to the considerable change of c/a ratio at the Fe{single bond}Co substitution in the "dumbbells".

AB - Single crystals of solid solutions U2(Fe1-xCox)13.6Si3.4 (0 ≤ x ≤ 1) having the hexagonal Th2Ni17 crystal structure were grown by a Czochralski method. Magnetization measurements along the principal axes reveal the easy-plane magnetic anisotropy in compounds with x up to 0.95, whereas terminal compound U2Co13.6Si3.4 has the uniaxial anisotropy. Magnitudes of the anisotropy constants K1 and K2 for x up to ∼0.8 are high enough to suggest a U contribution to the anisotropy, i.e., a magnetic state of U. The observed rapid weakening of the anisotropy and the change of its type at highest Co content are attributed to the 3d-metal sublattice, namely to the considerable change of c/a ratio at the Fe{single bond}Co substitution in the "dumbbells".

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