Please use this identifier to cite or link to this item: http://localhost:8080/xmlui/handle/123456789/3151
Full metadata record
DC FieldValueLanguage
dc.contributor.authorMoreira, R L-
dc.contributor.authorLobo, R P S M-
dc.contributor.authorRamos, S L L M-
dc.contributor.authorSebastian, T M-
dc.contributor.authorMatinaga, F M-
dc.contributor.authorAriete Righi-
dc.contributor.authorDias, A-
dc.date.accessioned2018-06-25T10:08:54Z-
dc.date.available2018-06-25T10:08:54Z-
dc.date.issued2018-05-16-
dc.identifier.citationPhysical Review Materials, 2(5):054406en_US
dc.identifier.urihttp://10.10.100.66:8080/xmlui/handle/123456789/3151-
dc.description.abstractThe low-temperature vibrational properties of Ba2ZnTeO6 double-perovskite ceramics obtained by the solid-state route were investigated by Raman scattering and Fourier-transform infrared reflectivity. We found that this material undergoes a reversible ferroelastic phase transition at around 140 K, well compatible with a recently proposed rhombohedral-to-monoclinic structural change that would occur below 165 K. Complementary calorimetric measurements showed that the phase transition has a first-order character, with an entropy jump compatible with a displacive mechanism. The vibrational spectra show clearly the splitting of the doubly degenerate E modes into nondegenerate representations of the low-symmetry phase. In particular, the lowestfrequency Raman mode presents soft-mode behavior and splits below the critical temperature, confirming the in-plane ferroelastic deformation in the low-temperature phase.en_US
dc.language.isoenen_US
dc.publisherAmerican Physical Societyen_US
dc.titleRaman and Infrared Spectroscopic Investigations of a Ferroelastic Phase Transition in Ba2ZnTeO6 Double Perovskiteen_US
dc.typeArticleen_US
Appears in Collections:2018

Files in This Item:
File Description SizeFormat 
Raman and infrared spectroscopic -Roberto L. Moreira-PHYSICAL REVIEW MATERIALS.pdf
  Restricted Access
933.07 kBAdobe PDFView/Open Request a copy


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.