Resonant magnetic x-ray diffraction study on successive metamagnetic transitions in tbb 4

Toshiya Inami, Kenji Ohwada, Yasuhiro H. Matsuda, Zhong Wen Ouyang, Hiroyuki Nojiri, Takeshi Matsumura, Daisuke Okuyama, Youichi Murakami

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Resonant magnetic x-ray diffraction experiments on the Shastry-Sutherland lattice TbB 4 were carried out under pulsed magnetic fields up to 30 T at 8 K. TbB 4 exhibits a multi-step magnetization process above 16 T below about 20K when magnetic fields are applied along the c-axis. We examined the intensity of the 010 magnetic reflection as a function of magnetic field and found that the magnetization plateau phases are accompanied by large XY components of magnetic moments. We propose novel magnetic structures which consist of XY spins and Ising spins for the plateau phases. We also propose that energy level crossing and its inherent degeneracy give rise to the successive metamagnetic transitions in TbB 4.

Original languageEnglish
Article number033707
Journaljournal of the physical society of japan
Volume78
Issue number3
DOIs
Publication statusPublished - 2009 Mar 1

Keywords

  • Rare-earth tetraboride
  • Resonant magnetic x-ray diffraction
  • Shastry-Sutherland lattice

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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