Magnetic anisotropy and spin reorientation in U2Co15Si2

E. A. Tereshina; A. V. Andreev; K. Koyama; Y. Shiokawa; I. Satoh; K. Watanabe

doi:10.1016/j.jmmm.2007.03.006

Magnetic anisotropy and spin reorientation in U₂Co₁₅Si₂

E. A. Tereshina, A. V. Andreev, K. Koyama, Y. Shiokawa, I. Satoh, K. Watanabe

High Field Laboratory for Superconducting Materials

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

Abstract

Field and temperature dependencies of the magnetization measured along the principal axes of a U₂Co₁₅Si₂ single crystal show that this compound is a ferromagnet with a spontaneous magnetic moment of 14.8 μ_B per formula unit (at 4.2 K), located in the basal plane of the hexagonal crystal structure. A strong easy-plane magnetic anisotropy (K₁=-0.97 MJ m^-3 at 4.2 K) is attributed to the U sublattice because Lu₂Co₁₅Si₂ exhibits easy-axis anisotropy with K₁=0.42 MJ m^-3. The easy-plane anisotropy of U₂Co₁₅Si₂ transforms to a cone of easy axes above 270 K. The magnetization vector approaches the c-axis at 350 K, and the compound has easy c-axis anisotropy up to the Curie temperature T_C=601 K.

Original language	English
Pages (from-to)	e515-e518
Journal	Journal of Magnetism and Magnetic Materials
Volume	316
Issue number	2 SPEC. ISS.
DOIs	https://doi.org/10.1016/j.jmmm.2007.03.006
Publication status	Published - 2007 Sept

Keywords

Magnetic anisotropy
RCo
Spin reorientation
Uranium compound

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Access to Document

10.1016/j.jmmm.2007.03.006

Cite this

@article{e3e4430454ce4567a663b75d7c45e3c2,

title = "Magnetic anisotropy and spin reorientation in U2Co15Si2 ",

abstract = "Field and temperature dependencies of the magnetization measured along the principal axes of a U2Co15Si2 single crystal show that this compound is a ferromagnet with a spontaneous magnetic moment of 14.8 μB per formula unit (at 4.2 K), located in the basal plane of the hexagonal crystal structure. A strong easy-plane magnetic anisotropy (K1=-0.97 MJ m-3 at 4.2 K) is attributed to the U sublattice because Lu2Co15Si2 exhibits easy-axis anisotropy with K1=0.42 MJ m-3. The easy-plane anisotropy of U2Co15Si2 transforms to a cone of easy axes above 270 K. The magnetization vector approaches the c-axis at 350 K, and the compound has easy c-axis anisotropy up to the Curie temperature TC=601 K.",

keywords = "Magnetic anisotropy, RCo, Spin reorientation, Uranium compound",

author = "Tereshina, {E. A.} and Andreev, {A. V.} and K. Koyama and Y. Shiokawa and I. Satoh and K. Watanabe",

note = "Funding Information: The work is a part of the research project AVOZ10100520 and has been supported by Grants GACR 202/06/0185 and GAAV IAA100100530. Copyright: Copyright 2018 Elsevier B.V., All rights reserved.",

year = "2007",

month = sep,

doi = "10.1016/j.jmmm.2007.03.006",

language = "English",

volume = "316",

pages = "e515--e518",

journal = "Journal of Magnetism and Magnetic Materials",

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AU - Tereshina, E. A.

AU - Andreev, A. V.

AU - Koyama, K.

AU - Shiokawa, Y.

AU - Satoh, I.

AU - Watanabe, K.

N1 - Funding Information: The work is a part of the research project AVOZ10100520 and has been supported by Grants GACR 202/06/0185 and GAAV IAA100100530. Copyright: Copyright 2018 Elsevier B.V., All rights reserved.

PY - 2007/9

Y1 - 2007/9

N2 - Field and temperature dependencies of the magnetization measured along the principal axes of a U2Co15Si2 single crystal show that this compound is a ferromagnet with a spontaneous magnetic moment of 14.8 μB per formula unit (at 4.2 K), located in the basal plane of the hexagonal crystal structure. A strong easy-plane magnetic anisotropy (K1=-0.97 MJ m-3 at 4.2 K) is attributed to the U sublattice because Lu2Co15Si2 exhibits easy-axis anisotropy with K1=0.42 MJ m-3. The easy-plane anisotropy of U2Co15Si2 transforms to a cone of easy axes above 270 K. The magnetization vector approaches the c-axis at 350 K, and the compound has easy c-axis anisotropy up to the Curie temperature TC=601 K.

AB - Field and temperature dependencies of the magnetization measured along the principal axes of a U2Co15Si2 single crystal show that this compound is a ferromagnet with a spontaneous magnetic moment of 14.8 μB per formula unit (at 4.2 K), located in the basal plane of the hexagonal crystal structure. A strong easy-plane magnetic anisotropy (K1=-0.97 MJ m-3 at 4.2 K) is attributed to the U sublattice because Lu2Co15Si2 exhibits easy-axis anisotropy with K1=0.42 MJ m-3. The easy-plane anisotropy of U2Co15Si2 transforms to a cone of easy axes above 270 K. The magnetization vector approaches the c-axis at 350 K, and the compound has easy c-axis anisotropy up to the Curie temperature TC=601 K.

KW - Magnetic anisotropy

KW - RCo

KW - Spin reorientation

KW - Uranium compound

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