%0 Journal Article %1 WOS:000220028200010 %A Moura, MR %A Ayala, AP %A Mendes, J %A Guedes, I %A Paschoal, CWA %A Leyva, AG %A Polla, G %A Vega, D %A de Perazzo, PK %A Lanza, H %C 111 RIVER ST, HOBOKEN 07030-5774, NJ USA %D 2004 %I WILEY %J JOURNAL OF RAMAN SPECTROSCOPY %K calorimetry; earth formates; phase rare scanning transition} {differential %N 2 %P 159-164 %R 10.1002/jrs.1124 %T Thermal behavior in Pr(HCOO)(3) crystals %V 35 %X This paper reports a thermal and spectroscopic study of Pr(HCOO)(3) crystal in the range 300-10 K. Room temperature Raman phonons are assigned based on group theory analysis and correlations with other rare earth formates. Differential scanning calorimetric (DSC) measurements show that there is a slight anomaly in the behavior of the heat capacity at around 140 K. Temperature-dependent Raman spectra were recorded and the changes observed are discussed. These results suggest that Pr(HCOO)(3) undergoes a second-order phase transformation at temperatures lower than 140 K. Based on the group-to-subgroup relations, we propose a possible low-temperature structure and discuss the driving mechanism of the phase transformation. Copyright (C) 2004 John Wiley Sons, Ltd.

@article{WOS:000220028200010, abstract = {This paper reports a thermal and spectroscopic study of Pr(HCOO)(3) crystal in the range 300-10 K. Room temperature Raman phonons are assigned based on group theory analysis and correlations with other rare earth formates. Differential scanning calorimetric (DSC) measurements show that there is a slight anomaly in the behavior of the heat capacity at around 140 K. Temperature-dependent Raman spectra were recorded and the changes observed are discussed. These results suggest that Pr(HCOO)(3) undergoes a second-order phase transformation at temperatures lower than 140 K. Based on the group-to-subgroup relations, we propose a possible low-temperature structure and discuss the driving mechanism of the phase transformation. Copyright (C) 2004 John Wiley Sons, Ltd.}, added-at = {2022-05-23T20:00:14.000+0200}, address = {111 RIVER ST, HOBOKEN 07030-5774, NJ USA}, author = {Moura, MR and Ayala, AP and Mendes, J and Guedes, I and Paschoal, CWA and Leyva, AG and Polla, G and Vega, D and de Perazzo, PK and Lanza, H}, biburl = {https://www.bibsonomy.org/bibtex/29d2aedd8686a5afa34886828cbef31cd/ppgfis_ufc_br}, doi = {10.1002/jrs.1124}, interhash = {886ab53162e415722af68b481757740f}, intrahash = {9d2aedd8686a5afa34886828cbef31cd}, issn = {0377-0486}, journal = {JOURNAL OF RAMAN SPECTROSCOPY}, keywords = {calorimetry; earth formates; phase rare scanning transition} {differential}, number = 2, pages = {159-164}, publisher = {WILEY}, pubstate = {published}, timestamp = {2022-05-23T20:00:14.000+0200}, title = {Thermal behavior in Pr(HCOO)(3) crystals}, tppubtype = {article}, volume = 35, year = 2004 }