What is it about?
An X-ray study of three phase transitions at 86, 78 and 72 K has been carried out for the trigonal modification of the Cs3Sb2I9 crystal. It should be mentioned that the X-ray study of the phase transitions in this compound has been partially stimulated by the finding of the incommensurate phase in the hexagonal Cs3Bi2I
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Why is it important?
The crystal Cs3Sb2I9 exhibits different polytypic modifications. Different physical properties and NQR of the trigonal modification were studied over a broad temperature range. The results revealed the existence of the PT at 86 and 72 K. It should be mentioned that the X-ray study of the phase transitions in this compound has been partially stimulated by the finding of the incommensurate phase in the hexagonal Cs3Bi2I9.
Perspectives
The present X-ray study revealed the three modulated phases in the trigonal modification of Cs3Sb2I9, in the temperature range 4.2– 273 K.
Dr Bagautdin Bagautdinov
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This page is a summary of: X-ray study of phase transitions in Cs 3 Sb 2 I 9 crystal, Solid State Communications, July 1999, Elsevier,
DOI: 10.1016/s0038-1098(99)00217-3.
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