1/3 Magnetization plateau in spin-1/2 square lattice antiferromagnet (CuBr)Sr 2Nb 3O 10

Yoshihiro Tsujimoto, Yoichi Baba, Noriaki Oba, Hiroshi Kageyama, Tomoya Fukui, Yasuo Narumi, Koichi Kindo, Takashi Saito, Mikio Takano, Yoshitami Ajiro, Kazuyoshi Yoshimura

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)

Abstract

A new triple-layered perovskite (CuBr)Sr 2Nb 3O 10 with the S = 1/2 square lattice has been prepared through a chimie douce route. Presence of strong spin frustration is inferred from zero-field specific heat measurements which exhibit successive phase transitions at 9.3 and 7.5 K. Application of magnetic fields merges the transition temperatures at 3 T, suggesting that the intermediate phase is of magnetic origin with fluctuating spin-spin correlation. Despite the square geometry, magnetization curves have revealed a metamagnetic transition to a novel phase characterized by a 1/3 plateau of the saturated magnetization.

Original languageEnglish
Article number063711
Journaljournal of the physical society of japan
Volume76
Issue number6
DOIs
Publication statusPublished - 2007 Jun

Keywords

  • (CuBr)Sr Nb O
  • Frustration
  • Ion exchange
  • Magnetization plateau
  • Square lattice
  • Successive phase transitions

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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