%0 Journal Article %1 WOS:000226733400010 %A Maczka, M %A Paraguassu, W %A Souza, AG %A Freire, PTC %A Melo, FEA %A Mendes, J %A Hanuza, J %C THE ATRIUM, SOUTHERN GATE, CHICHESTER PO19 8SQ, W SUSSEX, ENGLAND %D 2005 %I JOHN WILEY & SONS LTD %J JOURNAL OF RAMAN SPECTROSCOPY %K Raman antiferroelectric crystals} high-pressure; layered materials; orthorhombic pressure-induced scattering; transitions; {phase %N 1 %P 56-62 %R 10.1002/jrs.1270 %T Pressure-induced phase transitions in antiferroelectric CsBi(MoO4)(2) %V 36 %X The high-pressure Raman spectra of antiferroelectric CsBi(MoO4)(2) were measured at room temperature. These studies indicated that this crystal exhibits two pressure-induced phase transitions at 0.6 and 1.0 GPa. The stable phase in the 0.6-1.0 GPa range was identified as having the same structure as the ambient-pressure ferroelastic phase observed below 125 K. The transition at 1.0 GPa is connected with significant distortion of the MoO42- tetrahedra and Bi3+ coordination sphere. The results suggest that the phase above 1.0 GPa may have the same structure as the high-pressure phase observed in KDy(MoO4)(2), KY(MoO4)(2) and KTb(MoO4)(2) crystals. Upon releasing pressure, the high-pressure phase transforms directly into the ambient-pressure phase. The origin of the observed suppression of the intermediate phase is discussed. Copyright (C) 2004 John Wiley Sons, Ltd.

@article{WOS:000226733400010, abstract = {The high-pressure Raman spectra of antiferroelectric CsBi(MoO4)(2) were measured at room temperature. These studies indicated that this crystal exhibits two pressure-induced phase transitions at 0.6 and 1.0 GPa. The stable phase in the 0.6-1.0 GPa range was identified as having the same structure as the ambient-pressure ferroelastic phase observed below 125 K. The transition at 1.0 GPa is connected with significant distortion of the MoO42- tetrahedra and Bi3+ coordination sphere. The results suggest that the phase above 1.0 GPa may have the same structure as the high-pressure phase observed in KDy(MoO4)(2), KY(MoO4)(2) and KTb(MoO4)(2) crystals. Upon releasing pressure, the high-pressure phase transforms directly into the ambient-pressure phase. The origin of the observed suppression of the intermediate phase is discussed. Copyright (C) 2004 John Wiley Sons, Ltd.}, added-at = {2022-05-23T20:00:14.000+0200}, address = {THE ATRIUM, SOUTHERN GATE, CHICHESTER PO19 8SQ, W SUSSEX, ENGLAND}, author = {Maczka, M and Paraguassu, W and Souza, AG and Freire, PTC and Melo, FEA and Mendes, J and Hanuza, J}, biburl = {https://www.bibsonomy.org/bibtex/278216cbf3f5cc2ed22131cd6d818650c/ppgfis_ufc_br}, doi = {10.1002/jrs.1270}, interhash = {8faaa306261b25dcd87eacd6f8ba1e47}, intrahash = {78216cbf3f5cc2ed22131cd6d818650c}, issn = {0377-0486}, journal = {JOURNAL OF RAMAN SPECTROSCOPY}, keywords = {Raman antiferroelectric crystals} high-pressure; layered materials; orthorhombic pressure-induced scattering; transitions; {phase}, number = 1, pages = {56-62}, publisher = {JOHN WILEY & SONS LTD}, pubstate = {published}, timestamp = {2022-05-23T20:00:14.000+0200}, title = {Pressure-induced phase transitions in antiferroelectric CsBi(MoO4)(2)}, tppubtype = {article}, volume = 36, year = 2005 }