Unconventional magnetic transitions in the mineral clinoatacamite Cu 2 Cl(OH) 3

X. G. Zheng, Tatsuya Kawae, Y. Kashitani, C. S. Li, N. Tateiwa, K. Takeda, H. Yamada, C. N. Xu, Y. Ren

研究成果: Contribution to journalArticle査読

95 被引用数 (Scopus)

抄録

Unconventional magnetic properties are found for a quantum spin system of mineral clinoatacamite, Cu 2 Cl(OH) 3 . Clinoatacamite is found to undergo an antiferromagnetic transition at 18.1 K with a small entropy fall (0.05R ln 2). At temperatures below 6.4 K, it transits into a disordered spin-glass-like state but with large specific heat anomalies. The entire entropy fall for the spin system is about 0.31R ln 2, which is smaller than those for dipolar spin ice (0.67R ln 2) and for ice I h (0.71R ln 2). Geometric frustration for the quantum Cu 2+ spins is suggested based on its crystal structure, magnetization, and specific heat studies.

本文言語英語
論文番号052409
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
71
5
DOI
出版ステータス出版済み - 2 1 2005

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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