First-order A1(TO) phonons as evidence of disorder in BaTiO3

Autor:	E. Gallego-Lluesma, S. P. S. Porto, J. L. Verble
Rok vydání:	1978
Předmět:	Phase transition Materials science Condensed matter physics Phonon First order Ferroelectricity Condensed Matter::Materials Science symbols.namesake Tetragonal crystal system symbols General Materials Science Raman spectroscopy Spectroscopy Raman scattering
Zdroj:	Journal of Raman Spectroscopy. 7:7-9
ISSN:	0377-0486
DOI:	10.1002/jrs.1250070106
Popis:	Evidence is presented, based on Raman scattering measurements, that the three modes observed in the A1(TO) phonon spectrum of tetragonal BaTiO3 are first order. These results are interpreted as supporting the order-disorder model of the ferroelectric phase transition.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::cfd47d21adaade582b424a60c1ae0a6b https://doi.org/10.1002/jrs.1250070106 Zobrazit plný text záznamu Plný text