Pressure effects in phonon modes and structure of A(II)B(2)(III)C(4)(IV) compounds and combinations

Tatsi, A; Lampakis, D; Liarokapis, E; Lopez, SA; Martinez, L; Giriat, W

dc.contributor.author	Tatsi, A	en
dc.contributor.author	Lampakis, D	en
dc.contributor.author	Liarokapis, E	en
dc.contributor.author	Lopez, SA	en
dc.contributor.author	Martinez, L	en
dc.contributor.author	Giriat, W	en
dc.date.accessioned	2014-03-01T01:52:08Z
dc.date.available	2014-03-01T01:52:08Z
dc.date.issued	2002	en
dc.identifier.issn	0895-7959	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/26579
dc.subject	Raman spectroscopy	en
dc.subject	high pressure	en
dc.subject	phonons	en
dc.subject.classification	Physics, Multidisciplinary	en
dc.title	Pressure effects in phonon modes and structure of A(II)B(2)(III)C(4)(IV) compounds and combinations	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	2002	en
heal.abstract	A(II)B(2)(III)C(4)(VI) compounds have been prepared with A(II) = Zn, Cd, Mn, B-III = In, and C-VI = S, Se. These atomic substitutions induce modifications in the structure and frequency for some of the phonons. These compounds have been studied by Raman spectroscopy at ambient conditions and under hydrostatic pressures. All phonons appear in the spectral region below 400 cm(-1). High-pressure measurements have shown the existence of soft modes. New modes seem to appear at high pressures due to the phonon splitting. All low frequency phonons of the Zn0.6Mn0.4In2S4 compound show a sudden modification in the frequency dependence on pressure above similar to 2 GPa. Based on the Raman results we propose an assignment for the modes and try to extract information about the structure and the possible phase transitions.	en
heal.publisher	TAYLOR & FRANCIS LTD	en
heal.journalName	HIGH PRESSURE RESEARCH	en
dc.identifier.isi	ISI:000176798900019	en
dc.identifier.volume	22	en
dc.identifier.issue	1	en
dc.identifier.spage	89	en
dc.identifier.epage	93	en