• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Solid State Communications >Low-temperature calorimetric study of phase transitions in CuCrP2S6
【24h】

Low-temperature calorimetric study of phase transitions in CuCrP2S6

机译：CuCrP2S6相变的低温量热研究

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The heat capacities of CuCrP2S6 have been measured at temperatures between 5 and 350 K. Three phase transitions were observed at 30.45, 154.96 and 185.92 K. The normal heat capacity was determined by fitting a model heat capacity function consisting of the Debye and Einstein functions and a correction term for the C-p-C-v difference by nonlinear least squares fitting. The phase transition entropies based on the phonon heat capacity thus determined were 4.1, 2.7 and 6.2 J K-1 mol(-1) for the three phase transitions, respectively. The phase transition occurring at 30.45 K is of a magnetic origin arising from the chromium spin and the upper two phase transitions are due to positional disorder of the Cu+ ions. Interpretation of the transition temperatures and transition entropies in terms of atomic interactions is in progress and will be reported in due course. (C) 2005 Elsevier Ltd. All rights reserved.
机译：在5至350 K之间的温度下测量了CuCrP2S6的热容。在30.45、154.96和185.92 K处观察到了三个相变。通过拟合由Debye和Einstein函数组成的模型热容函数确定正常热容。通过非线性最小二乘拟合的CpCv差异的校正项。这样确定的基于声子热容的相变熵对于三个相变分别为4.1、2.7和6.2 J K-1 mol（-1）。在30.45 K处发生的相变是由铬自旋引起的磁起源，而上方的两个相变是由于Cu +离子的位置无序所致。关于原子相互作用的转变温度和转变熵的解释正在进行中，并将在适当时候报告。 （C）2005 Elsevier Ltd.保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号