Magnetic anisotropy and spin reorientation in U2Co15Si2

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

Research output: Contribution to journalArticlepeer-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 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.

Original languageEnglish
Pages (from-to)e515-e518
JournalJournal of Magnetism and Magnetic Materials
Volume316
Issue number2 SPEC. ISS.
DOIs
Publication statusPublished - 2007 Sep

Keywords

  • Magnetic anisotropy
  • RCo
  • Spin reorientation
  • Uranium compound

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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