Modulated crystal structures of phases VII and V in (NH4)3H(SO4)2. Neutron Laue diffraction

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• 作者：G. J. McIntyre (1)
  L. S. Smirnov (1) (3)
  A. I. Baranov (4)
  V. V. Dolbinina (4)
  M. V. Frontasyeva (3)
  S. S. Pavlov (3)
  Yu. S. Pankratova (3)
  
• 刊名：Crystallography Reports
• 出版年：2013
• 出版时间：January 2013
• 年：2013
• 卷：58
• 期：1
• 页码：78-80
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• 作者单位：G. J. McIntyre (1)
  L. S. Smirnov (1) (3)
  A. I. Baranov (4)
  V. V. Dolbinina (4)
  M. V. Frontasyeva (3)
  S. S. Pavlov (3)
  Yu. S. Pankratova (3)
  
  1. Institut Laue-Langevin, BP 156, 38042, Grenoble Cedex 9, France
  3. Joint Institute for Nuclear Research, 141980, Dubna, Moscow region, Russia
  4. Shubnikov Institute of Crystallography RAS, Moscow, Russia
  
• ISSN：1562-689X

文摘

A study of the crystal structure of the phases VII and V of (NH4)3H(SO4)2 by mean of neutron Laue diffraction was carried out at temperatures from 5 to 300 K. It is found that the crystal structures of phases VII and V are incommensurately modulated with different periods, and that the phase transition from phase VII to phase V is of first order.