Observation of 1/3 magnetization-plateau-like anomaly in S = 3/2 perfect kagomé lattice antiferromagnet KCr3(OH)6(SO 4)2 (Cr-jarosite)

Koji Okuta, Shigeo Hara, Hirohiko Sato, Yasuo Narumi, Koichi Kindo

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)

Abstract

Single crystals of the S - 3/2 kagomé lattice antiferromagnet KCr3(OH)6(SO4)2 (Cr-jarosite) have been synthesized. Magnetic susceptibility measurement reveals an antiferromagnetic transition at TN - 4.5 K. A weak ferromagnetism with a spontaneous magnetization along the c-axis appears below TN. High-field magnetization measurement reveals an anomaly at about 1/3 of the saturation magnetization under in-plane magnetic fields, however, the out-of-plane magnetization curve is almost linear. In contrast to ordinary field-induced transitions, the anomaly is less pronounced at lower temperatures. This observation is consistent with the prediction made using the order-by-disorder model on the 1/3 magnetization plateau.

Original languageEnglish
Article number063703
Journaljournal of the physical society of japan
Volume80
Issue number6
DOIs
Publication statusPublished - 2011 Jun

Keywords

  • 1/3 magnetization plateau
  • Cr-jarosite
  • Geometric frustration
  • High-field magnetization
  • Kagomé lattice antiferromagnet
  • Order by disorder
  • Single crystal

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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