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Proceedings Paper

Structural peculiarities and phonon spectra of A3B2C9 compounds: a Raman-scattering diagnostic
Author(s): Mikhail P. Lisitsa; Eugen Yu. Peresh; O. V. Trylis; Anatoli M. Yaremko
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Paper Abstract

In presented work the Raman spectra of the family of ferroelectric crystals A3B2C9, (here A equals Cs, Rb; B equals Sb, Bi; C equals Br) are given and the assignment of some high frequency bands is fulfilled. The conclusion about possible difference of structure of the crystals Rb3Bi2Br9 and Rb3Sb2Br9 from well known and detaily investigated structure of Cs3Bi2Br9 crystal is made. We also suggest that significant variation of spectra in the temperature region 110 - 300 K can be not only due to phase transition effects but also owing to anharmonic Fermi resonance between one- and two phonon excitations.

Paper Details

Date Published: 20 April 1998
PDF: 6 pages
Proc. SPIE 3359, Optical Diagnostics of Materials and Devices for Opto-, Micro-, and Quantum Electronics 1997, (20 April 1998); doi: 10.1117/12.306246
Show Author Affiliations
Mikhail P. Lisitsa, Institute of Semiconductor Physics (Ukraine)
Eugen Yu. Peresh, Uzhgorod State Univ. (Ukraine)
O. V. Trylis, Institute of Semiconductor Physics (Ukraine)
Anatoli M. Yaremko, Institute of Semiconductor Physics (Ukraine)


Published in SPIE Proceedings Vol. 3359:
Optical Diagnostics of Materials and Devices for Opto-, Micro-, and Quantum Electronics 1997
Sergey V. Svechnikov; Mikhail Ya. Valakh, Editor(s)

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