Structural phase transitions in [(CH3)4N]CdCl3 studied by the EPR of the [N(CH3)3]+ radicals

Jiang Tsu Yu*, Kuo Tung Liu, Yng Huey Jeng

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

10 引文 斯高帕斯(Scopus)

摘要

The hexagonal P63 m to monoclinic P21 m structural phase transition in [(CH3)4N]CdCl3 has been investigated by the electron paramagnetic resonance (EPR) of the [N(CH3)3]+ radicals produced by γ-irradiation. Above the transition temperature, this radical species exhibits axial symmetry, with the hexagonal c-axis as the symmetry axis. Below the phase transition, the magnetic symmetry departs significantly from axial symmetry. The apparent EPR proper rotation group in the monoclinic phase is the hexagonal C6, the same as in the hexagonal phase. This indicates the presence of merohedral twinning below the phase transition. The hexagonal c-axis becomes the unique twofold axis of the monoclinic phase, and there exist three types of twin-domains related by rotations of ±120° (or ±60°) about the c-axis.

原文英語
頁(從 - 到)543-547
頁數5
期刊Solid State Communications
89
發行號6
DOIs
出版狀態已發佈 - 1994 2月

ASJC Scopus subject areas

  • 化學 (全部)
  • 凝聚態物理學
  • 材料化學

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