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Domain Structure and Orientational Ordering of NO2 Groups in K2Ba(NO2)4 Crystals
Authors:L. F. Kirpichnikova  V. S. Shakhmatov  L. Szczesniak  M. Polomska
Affiliation:1.Shubnikov Institute of Crystallography,Russian Academy of Sciences,Moscow,Russia;2.Obninsk State Technical University for Power Engineering,Obninsk,Russia;3.Institute of Molecular Physics,Polish Academy of Sciences,Poznan,Poland
Abstract:Polarization-optical studies of the domain structure of K2Ba(NO2)4 crystals and differentialscanning calorimetric measurements have been performed in the vicinity of the high-temperature phase transition. The orientational ordering of NO2 atomic groups is analyzed and the temperature dependence of the birefringence coefficient is theoretically described.
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