High-pressure Raman and infrared study of ZrV2O7
2007 (English)In: Solid State Communications, ISSN 0038-1098, E-ISSN 1879-2766, Vol. 141, no 12, 680-684 p.Article in journal (Refereed) Published
The room-temperature Raman and infrared spectra of zirconium vanadate (ZrV2O7) were observed up to pressures of 12 GPa and 5.7 GPa, respectively. The frequencies of the optically active modes at ambient pressure were calculated using direct methods and compared with experimental values. Average mode Gruneisen parameters were calculated for the Raman and infrared active modes. Changes in the spectra under pressure indicate a phase transition at similar to 1.6 GPa, which is consistent with the previously observed a (cubic) to (pseudo-tetragonal) phase transition, and changes in the spectra at similar to 4 GPa are consistent with an irreversible transformation to an amorphous structure.
Place, publisher, year, edition, pages
2007. Vol. 141, no 12, 680-684 p.
strain, high pressure, inelastic light scattering, light absorption and reflection, negative thermal-expansion, total-energy calculations, augmented-wave method, basis-set, phase
IdentifiersURN: urn:nbn:se:su:diva-57126DOI: 10.1016/j.ssc.2007.01.003ISI: 000244998600010OAI: oai:DiVA.org:su-57126DiVA: diva2:416033
authorCount :72011-05-102011-05-032011-05-10Bibliographically approved