Synthesis and physical property of triangular lattice antiferromagnet InFe2O4

Kengo Oka, Masaki Azuma, Yasuo Narumi, Koichi Kindo, Naoaki Hayashi, Yuichi Shimakawa, Mikio Takano

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Sagnetic and electrical properties of InFe2O4 were investigated. InFe2O4 belongs to the RFe2O 4 family where R is trivalent cation (R = In, Yb, Lu, Er, or Y). In the rhombohedral crystal structure of this compound, the double layers of FeO5 bipyramids make two-dimensional triangular lattices and are separated by RO6 octahedra. Since the numbers of Fe2+and Fe3+ ions are equal in the triangular lattice, the coexistence of charge and magnetic frustrations is expected. We succeeded in preparing high-quality InFe2O4 samples by a solid state reaction from In2O3, Fe and Fe3O4 in a vacuum sealed tube. A small amount of Fe3O4 was magnetically separated. The dielectric constant, magnetic susceptibility, high-field magetization, Mössbauer spectroscopy, and the specific heat data suggested that charge and ferrimagnetic ordering took place simultaneously at 240 K in this compound.

Original languageEnglish
Pages (from-to)53-57
Number of pages5
JournalFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume54
Issue number1
DOIs
Publication statusPublished - 2007 Jan 1

Keywords

  • Charge ordering
  • InFeO
  • Magnetic ordering
  • RFeO
  • Triangular lattice antiferromagnet

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Metals and Alloys
  • Materials Chemistry

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