%0 Journal Article %1 WOS:000393628500012 %A Santos, Silva S D %A Paraguassu, W %A Maczka, M %A Freire, P T C %C THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND %D 2017 %I PERGAMON-ELSEVIER SCIENCE LTD %J SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY %K Molybdates; Negative Phonon Pressure Raman Structural amorphization; calculation} expansion; induced phase pressure; scattering; thermal transition; {Hydrostatic %P 80-85 %R 10.1016/j.saa.2016.11.024 %T High pressure Raman scattering study on Sm2Mo4O15 system %V 174 %X High-pressure Raman experiments were performed on Sm2Mo4O15 system up to 7.9 GPa. We show that this system exhibits an irreversible structural amorphization at 5.0 GPa. In contrast to any other molybdates and tungstates experiencing pressure-induced amorphization, this structural change in Sm2Mo4O15 has strongly first order character. This amorphous phase can be originated from the hindrance of a crystalline structural phase transition from the P (1) over bar to P2/m structure. Additionally, the assignment of Raman modes of the ambient pressure phase of Sm2Mo4O15 was proposed based on lattice dynamics calculations. (C) 2016 Elsevier B.V. All rights reserved.

@article{WOS:000393628500012, abstract = {High-pressure Raman experiments were performed on Sm2Mo4O15 system up to 7.9 GPa. We show that this system exhibits an irreversible structural amorphization at 5.0 GPa. In contrast to any other molybdates and tungstates experiencing pressure-induced amorphization, this structural change in Sm2Mo4O15 has strongly first order character. This amorphous phase can be originated from the hindrance of a crystalline structural phase transition from the P (1) over bar to P2/m structure. Additionally, the assignment of Raman modes of the ambient pressure phase of Sm2Mo4O15 was proposed based on lattice dynamics calculations. (C) 2016 Elsevier B.V. All rights reserved.}, added-at = {2022-05-23T20:00:14.000+0200}, address = {THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND}, author = {Santos, Silva S D and Paraguassu, W and Maczka, M and Freire, P T C}, biburl = {https://www.bibsonomy.org/bibtex/2ec2e2842f66682fa48d236aaaac844e9/ppgfis_ufc_br}, doi = {10.1016/j.saa.2016.11.024}, interhash = {e7c0d685e1c96e3775cedcac70f83714}, intrahash = {ec2e2842f66682fa48d236aaaac844e9}, issn = {1386-1425}, journal = {SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY}, keywords = {Molybdates; Negative Phonon Pressure Raman Structural amorphization; calculation} expansion; induced phase pressure; scattering; thermal transition; {Hydrostatic}, pages = {80-85}, publisher = {PERGAMON-ELSEVIER SCIENCE LTD}, pubstate = {published}, timestamp = {2022-05-23T20:00:14.000+0200}, title = {High pressure Raman scattering study on Sm2Mo4O15 system}, tppubtype = {article}, volume = 174, year = 2017 }