First-order-like antiferromagnetic transition and field-induced antiferroquadrupolar transition in terbium palladium bronze TbPd 3S4

Eiichi Matsuoka, Hiroshi Shida, Takeshi Matsumura, Kenji Ohoyama, Hideya Onodera

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Specific heat and magnetic susceptibility measurements were performed on single crystalline TbPd3S4, as well as neutron powder diffraction experiments in various magnetic fields. The sharp peak in the specific heat at the Néel temperature TN = 2.55 K and the discontinuous decrease in the magnetic susceptibility at TN suggested that a first-order antiferromagnetic (AFM) transition was occurring. Field-induced phases were found above about 0.5 T. Since the phase boundary between the field-induced and paramagnetic phases in the B - T phase diagram is of the "re-entrant" type, the field-induced phase can be concluded to be antiferroquadrupolar (AFQ) ordering one. The appearance of a canted magnetic structure above 0.5 T supports the existence of field-induced AFQ ordering. In addition to a magnetic interaction, a quadrupolar or higher multipolar interaction is crucial for determining the magnetic ground state in TbPd 3S4. The first-order-like AFM transition is caused by these multipolar interactions.

Original languageEnglish
Article numberSA085
Journaljournal of the physical society of japan
Volume80
Issue numberSUPPL. A
DOIs
Publication statusPublished - 2011 Jul

Keywords

  • Antiferromagnetic order
  • Antiferroquadrupolar order
  • Magnetic susceptibility
  • Neutron diffraction
  • Specific heat
  • TbPdS

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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