Pressure dependence of Raman-active phonons of CaBr2

Raptis, C; Krobok, M; Holzapfel, WB

dc.contributor.author	Raptis, C	en
dc.contributor.author	Krobok, M	en
dc.contributor.author	Holzapfel, WB	en
dc.date.accessioned	2014-03-01T01:09:00Z
dc.date.available	2014-03-01T01:09:00Z
dc.date.issued	1992	en
dc.identifier.issn	08957959	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/10792
dc.subject.other	Crystal structure	en
dc.subject.other	High pressure effects in solids	en
dc.subject.other	Raman scattering	en
dc.subject.other	Spectroscopic analysis	en
dc.subject.other	Calcium bromide	en
dc.subject.other	Phonon frequency slopes	en
dc.subject.other	Raman active phonons	en
dc.subject.other	Calcium compounds	en
dc.title	Pressure dependence of Raman-active phonons of CaBr2	en
heal.type	journalArticle	en
heal.identifier.primary	10.1080/08957959208245607	en
heal.identifier.secondary	http://dx.doi.org/10.1080/08957959208245607	en
heal.publicationDate	1992	en
heal.abstract	Raman scattering measurements have been carried out in anhydrous CaBr2 under variable pressure, in the range 0-100kbar using nitrogen as pressure transmitting medium. At low pressures (p<25kbar) five Raman-active phonons have been identified, out of the six expected for the orthorhombic D2h12 structure; plots of the phonon frequencies against the pressure show steep slopes up to this pressure. Above 25kbar, substantial changes of the spectrum (including an increase of the number of phonon peaks) have been observed, accompanied by alterations of the phonon frequency slopes. The variation of the Raman spectrum suggests that some kind of high-pressure structural change occurs in the crystal.	en
heal.journalName	High Pressure Research	en
dc.identifier.doi	10.1080/08957959208245607	en
dc.identifier.volume	9-10	en
dc.identifier.issue	1-2	en
dc.identifier.spage	27	en
dc.identifier.epage	30	en