Anomalous antiferromagnetic properties of the tetragonal compound, TbB2C2

Koji Kaneko, Hideya Onodera, Hiroki Yamauchi, Kenji Ohoyama, Aya Tobo, Yasuo Yamaguchi

Research output: Contribution to journalArticlepeer-review

36 Citations (Scopus)

Abstract

Magnetic properties of the tetragonal compound TbB2C2 were investigated by means of specific heat, magnetization and neutron diffraction measurements. TbB2C2 is an antiferromagnet with TN = 21.7 K. However, the magnetic susceptibility exhibits no cusp-like anomaly but shows an increase below TN. In the ground state, the magnetic moments of Tb lie in the basal c-plane and the magnetic structure can be described with the propagation vectors of the dominant component of k = [0 1 1/2] with the weak components of k′ = [0 0 1/2]. In addition, there also exists a weak longitudinal sinusoidal moment-modulation type component which is represented by kL = [1 ± δ ± δ 0], where δ = 0.13. Although the fundamental magnetic correlation in RB2C2 is [1 0 0]-type, the dominant component in the ground state of TbB2C2 is k = [0 1 1/2]-type.

Original languageEnglish
Pages (from-to)3112-3118
Number of pages7
Journaljournal of the physical society of japan
Volume70
Issue number10
DOIs
Publication statusPublished - 2001 Oct

Keywords

  • DyBC
  • HoBC
  • Magnetic susceptibility
  • Magnetization process
  • Neutron diffraction
  • Quadrupolar interaction
  • TbBC

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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