Powder x-ray diffraction and Rietveld analysis of (C2H5NH3)2CuCl4

doi:10.1088/1674-1056/abee0a

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

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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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Powder x-ray diffraction and Rietveld analysis of (C2H5NH3)2CuCl4

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Powder x-ray diffraction and Rietveld analysis of (C₂H₅NH₃)₂CuCl₄