Raman study of the phase transition in [N(C2H5)4]2 ZnCl4 single crystals

Tsai Shia Jung, Hsiang Lin Liu, Jiang-Tsu Yu

研究成果: 雜誌貢獻文章同行評審

7 引文 斯高帕斯(Scopus)

摘要

Polarized Raman spectra of oriented single crystals [N(C2H5)4]2ZnCl4 (TEAZ) have been recorded from 320 K to 40 K during both cooling and heating cycles, covering the known phase transitions. The temperature dependence of the internal vibration of the ZnCl4-2 ion and C-C bond is explained in terms of the motional narrowing due to the disordering CH3 group in TEAZ, which results in the splitting of the ZnCl4-2 and C-C lines in the internal mode region. Our Raman data shows that the phase transition is associated with the onset of the CH3 group disordering. We have also observed that the phase transition exhibits thermal hysteresis.

原文英語
頁(從 - 到)344-348
頁數5
期刊Chinese Journal of Physics
39
發行號4
出版狀態已發佈 - 2001 十二月 1

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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