PRESSURE AND TEMPERATURE-DEPENDENCE OF THE RAMAN-SPECTRA OF ZIRCONIA AND HAFNIA

KOUROUKLIS, GA; LIAROKAPIS, E

dc.contributor.author	KOUROUKLIS, GA	en
dc.contributor.author	LIAROKAPIS, E	en
dc.date.accessioned	2014-03-01T01:08:30Z
dc.date.available	2014-03-01T01:08:30Z
dc.date.issued	1991	en
dc.identifier.issn	0002-7820	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/10536
dc.subject	Raman Spectra	en
dc.subject	Temperature Dependence	en
dc.subject.classification	Materials Science, Ceramics	en
dc.subject.other	PHASE-TRANSITIONS	en
dc.subject.other	ZRO2	en
dc.subject.other	ANHARMONICITY	en
dc.title	PRESSURE AND TEMPERATURE-DEPENDENCE OF THE RAMAN-SPECTRA OF ZIRCONIA AND HAFNIA	en
heal.type	journalArticle	en
heal.identifier.primary	10.1111/j.1151-2916.1991.tb04054.x	en
heal.identifier.secondary	http://dx.doi.org/10.1111/j.1151-2916.1991.tb04054.x	en
heal.language	English	en
heal.publicationDate	1991	en
heal.abstract	The pressure dependence of the phonon frequencies in the isomorphic materials ZrO2 and HfO2, and the temperature dependence of the phonon frequencies of HfO2, were investigated by Raman spectroscopy in the ranges 0 to 16 GPa and 20 to 800 K. The comparison of the pressure dependence of the Raman spectra of the two materials helps to elucidate the correlation of their vibrations in the intermediate spectral region (240 to 410 cm-1). The high-pressure phase of ZrO2 is stable up to 16 GPa and of tetragonal symmetry. HfO2 does not show any pressure-induced phase transition up to 12 GPa, while the temperature effect on the phonon frequencies is similar to that of ZrO2.	en
heal.publisher	AMER CERAMIC SOC	en
heal.journalName	JOURNAL OF THE AMERICAN CERAMIC SOCIETY	en
dc.identifier.doi	10.1111/j.1151-2916.1991.tb04054.x	en
dc.identifier.isi	ISI:A1991FC00900008	en
dc.identifier.volume	74	en
dc.identifier.issue	3	en
dc.identifier.spage	520	en
dc.identifier.epage	523	en