%0 Journal Article %1 WOS:000278338200015 %A Luz-Lima, C %A Saraiva, G D %A Filho, A G Souza %A Paraguassu, W %A Freire, P T C %A Filho, J Mendes %C 111 RIVER ST, HOBOKEN 07030-5774, NJ USA %D 2010 %I WILEY %J JOURNAL OF RAMAN SPECTROSCOPY %K Raman hydrostatic molybdate; phase pressure; scattering} transition; {sodium %N 5 %P 576-581 %R 10.1002/jrs.2468 %T Raman spectroscopy study of Na2MoO4 center dot 2H(2)O and Na2MoO4 under hydrostatic pressure %V 41 %X Raman spectroscopy measurements of polycrystalline Na2MoO4 center dot 2H(2)O (NMHO) and Na2MoO4 (NM) under hydrostatic pressure (from 0 to 10 GPa) were performed. This study allowed us to monitor the stretching and bending vibrations of MoO4 ions as well as the translational modes as a function of pressure. The pressure dependence of the wavenumbers of the modes indicates that the Na2MoO4 center dot 2H(2)O undergoes two phase transitions at about similar to 3 and similar to 4 GPa. When releasing pressure, we have observed that the original spectrum is recovered, thereby pointing to a reversible process. The Na2MoO4 (NM) starting phase was found to be stable up to 10 GPa. The pressure-dependent Raman data for NM did not reveal any structural modification. The influence of the pressure-transmitting medium on the phase transitions is also discussed. Copyright (C) 2009 John Wiley & Sons, Ltd.

@article{WOS:000278338200015, abstract = {Raman spectroscopy measurements of polycrystalline Na2MoO4 center dot 2H(2)O (NMHO) and Na2MoO4 (NM) under hydrostatic pressure (from 0 to 10 GPa) were performed. This study allowed us to monitor the stretching and bending vibrations of MoO4 ions as well as the translational modes as a function of pressure. The pressure dependence of the wavenumbers of the modes indicates that the Na2MoO4 center dot 2H(2)O undergoes two phase transitions at about similar to 3 and similar to 4 GPa. When releasing pressure, we have observed that the original spectrum is recovered, thereby pointing to a reversible process. The Na2MoO4 (NM) starting phase was found to be stable up to 10 GPa. The pressure-dependent Raman data for NM did not reveal any structural modification. The influence of the pressure-transmitting medium on the phase transitions is also discussed. Copyright (C) 2009 John Wiley & Sons, Ltd.}, added-at = {2022-05-23T20:00:14.000+0200}, address = {111 RIVER ST, HOBOKEN 07030-5774, NJ USA}, author = {Luz-Lima, C and Saraiva, G D and Filho, A G Souza and Paraguassu, W and Freire, P T C and Filho, J Mendes}, biburl = {https://www.bibsonomy.org/bibtex/2f2fb6c692454978b970115dfc2ec67f7/ppgfis_ufc_br}, doi = {10.1002/jrs.2468}, interhash = {58963f0c1bc4901754d491f2315897d2}, intrahash = {f2fb6c692454978b970115dfc2ec67f7}, issn = {0377-0486}, journal = {JOURNAL OF RAMAN SPECTROSCOPY}, keywords = {Raman hydrostatic molybdate; phase pressure; scattering} transition; {sodium}, number = 5, pages = {576-581}, publisher = {WILEY}, pubstate = {published}, timestamp = {2022-05-23T20:00:14.000+0200}, title = {Raman spectroscopy study of Na2MoO4 center dot 2H(2)O and Na2MoO4 under hydrostatic pressure}, tppubtype = {article}, volume = 41, year = 2010 }