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Chin. Phys. B, 2021, Vol. 30(6): 067502    DOI: 10.1088/1674-1056/abee0a
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Powder x-ray diffraction and Rietveld analysis of (C2H5NH3)2CuCl4

Yi Liu(刘义)1,2,4, Jun Shen(沈俊)2, Zunming Lu(卢遵铭)4, Baogen Shen(沈保根)1, and Liqin Yan(闫丽琴)1,3,†
1 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
2 Key Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China;
3 School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100190, China;
4 School of Material Science and Engineering, Hebei University of Technology, Tianjin 300130, China
Abstract  Structural properties of the organic-inorganic hybrid (C2H5NH3)2CuCl4 (EA2CuCl4) have been investigated by means of x-ray powder diffraction and Rietveld analysis. A structural phase transition from Pbca to Aba2 occurs at T4=240 K, which results in a paraelectric-ferroelectric phase transition. The release of the Jahn-Teller distortion with increasing temperature toward T4 is revealed by the structural analysis.
Keywords:  organic-inorganic hybrid      x-ray diffraction      (C2H5NH3)2CuCl4  
Received:  27 January 2021      Revised:  09 March 2021      Accepted manuscript online:  12 March 2021
PACS:  75.50.-y (Studies of specific magnetic materials)  
  61.05.cp (X-ray diffraction)  
  81.07.Pr (Organic-inorganic hybrid nanostructures)  
Fund: Project supported by the National Natural Science Foundation of China (Grant No. 51925605), Fujian Institute of Innovation, Chinese Academy of Sciences (Grant No. FJCXY18040303), and the Youth Innovation Promotion of the Chinese Academy of Sciences (Grant No. 2013004).
Corresponding Authors:  Liqin Yan     E-mail:  lqyan@iphy.ac.cn

Cite this article: 

Yi Liu(刘义), Jun Shen(沈俊), Zunming Lu(卢遵铭), Baogen Shen(沈保根), and Liqin Yan(闫丽琴) Powder x-ray diffraction and Rietveld analysis of (C2H5NH3)2CuCl4 2021 Chin. Phys. B 30 067502

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