%0 Journal Article %1 WOS:000295551700032 %A Maczka, M %A Ptak, M %A Luz-Lima, C %A Freire, P T C %A Paraguassu, W %A Guerini, S %A Hanuza, J %C 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA %D 2011 %I ACADEMIC PRESS INC ELSEVIER SCIENCE %J JOURNAL OF SOLID STATE CHEMISTRY %K High Phase dynamics; pressure; transitions} {Lattice %N 10 %P 2812-2817 %R 10.1016/j.jssc.2011.08.032 %T Pressure-induced phase transitions in multiferroic RbFe(MoO4)(2)-Raman scattering study %V 184 %X High pressure Raman scattering experiments were performed on RbFe(MoO4)(2). These experiments revealed that two phase transitions take place in RbFe(MoO4)(2) at very low pressures, i.e. between ambient pressure and 0.2 GPa and between 0.4 and 0.7 GPa. Raman results showed that at the first phase transition the room temperature P (3) over bar m1 phase transforms into the P (3) over bar phase, which is also observed at ambient pressure below 190 K. The second pressure-induced phase transition occurs into a low symmetry phase of unknown symmetry. The performed lattice dynamics calculations for the P (3) over bar m1 phase and ab initio calculation of the structural changes under hydrostatic pressure helped us to get better insights into the mechanism of the observed phase transitions. (C) 2011 Elsevier Inc. All rights reserved.

@article{WOS:000295551700032, abstract = {High pressure Raman scattering experiments were performed on RbFe(MoO4)(2). These experiments revealed that two phase transitions take place in RbFe(MoO4)(2) at very low pressures, i.e. between ambient pressure and 0.2 GPa and between 0.4 and 0.7 GPa. Raman results showed that at the first phase transition the room temperature P (3) over bar m1 phase transforms into the P (3) over bar phase, which is also observed at ambient pressure below 190 K. The second pressure-induced phase transition occurs into a low symmetry phase of unknown symmetry. The performed lattice dynamics calculations for the P (3) over bar m1 phase and ab initio calculation of the structural changes under hydrostatic pressure helped us to get better insights into the mechanism of the observed phase transitions. (C) 2011 Elsevier Inc. All rights reserved.}, added-at = {2022-05-23T20:00:14.000+0200}, address = {525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA}, author = {Maczka, M and Ptak, M and Luz-Lima, C and Freire, P T C and Paraguassu, W and Guerini, S and Hanuza, J}, biburl = {https://www.bibsonomy.org/bibtex/2d30d2ef7ee0c3481bcb26d0381120729/ppgfis_ufc_br}, doi = {10.1016/j.jssc.2011.08.032}, interhash = {447641582b752760ec30d7692aa08acc}, intrahash = {d30d2ef7ee0c3481bcb26d0381120729}, issn = {0022-4596}, journal = {JOURNAL OF SOLID STATE CHEMISTRY}, keywords = {High Phase dynamics; pressure; transitions} {Lattice}, number = 10, pages = {2812-2817}, publisher = {ACADEMIC PRESS INC ELSEVIER SCIENCE}, pubstate = {published}, timestamp = {2022-05-23T20:00:14.000+0200}, title = {Pressure-induced phase transitions in multiferroic RbFe(MoO4)(2)-Raman scattering study}, tppubtype = {article}, volume = 184, year = 2011 }