Highly anisotropic magnetic phase diagram of a 2-dimensional orthogonal dimer system TmB4

F. Iga, A. Shigekawa, Y. Hasegawa, S. Michimura, T. Takabatake, S. Yoshii, T. Yamamoto, M. Hagiwara, K. Kindo

Research output: Contribution to journalArticlepeer-review

48 Citations (Scopus)

Abstract

We have measured magnetization processes of a Shastry-Sutherland lattice (SSL) TmB4. For B∥c, plateaus appear at frac(1, 8) and frac(1, 2) of the full moment 7 μB/Tm at 1.7-1.4 and 2-3 T, respectively. For B∥a, a metamagnetic transition occurs at ∼30 T which is followed by a frac(1, 2) plateau at ∼32 T. These plateaus are originated from geometric frustration effect in SSL. Magnetic field and temperature dependences of magnetoresistance and specific heat were also measured in detail below TN=11.7 K. The magnetic phase diagram possesses complex features which have an antiferromagnetic phase, spin flop saturated one, and a few additional phases by long periodic modulations originated from frustration effect in SSL.

Original languageEnglish
Pages (from-to)e443-e445
JournalJournal of Magnetism and Magnetic Materials
Volume310
Issue number2 SUPPL. PART 2
DOIs
Publication statusPublished - 2007 Mar

Keywords

  • Geometric frustration
  • Shastry-Sutherland lattice
  • TmB

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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