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1994 | 86 | 3 | 357-361
Article title

Quadrupole Relaxation of ^{79}Br Nuclei in Ferroelectric (CH_{3})_{4}NCdBr_{3} (TMCB)

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Languages of publication
EN
Abstracts
EN
Investigations of temperature dependence of a nuclear quadrupole spin-lattice relaxation time of ^{79}Br nuclei in ferroelectric (CH_{3})_{4}NCdBr_{3} are presented. It is shown that in paraelectric phase in the vicinity of phase transition temperature relaxation process is determined by critical fluctuations of electric field gradient. In ferroelectric phase relaxation is related to three different mechanisms, namely: lattice vibrations, CH_{3¯} group reorientations and TMA cation motions. According to the results of measurements it is concluded that the phase transition is connected with ordering of TMA cations.
Keywords
EN
Publisher

Year
Volume
86
Issue
3
Pages
357-361
Physical description
Dates
published
1994-05
received
1994-04-13
Contributors
author
  • Institute of Physics, Ukrainian Acad. Sci., Prospekt Nauki 46, 252028 Kiev, Ukraine
  • Institute of Physics, Ukrainian Acad. Sci., Prospekt Nauki 46, 252028 Kiev, Ukraine
author
  • Institute of Experimental Physics, University of Wrocław, M. Borna 9, 50-204 Wrocław, Poland
References
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Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv86z309kz
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