Raman-spectroscopic investigation of Ba2InTaO6 and Sr2InTaO6 perovskites

dc.contributor.author	Dias, A
dc.contributor.author	Abdul Khalam, L
dc.contributor.author	Sebastian, M T
dc.contributor.author	Moreira, R L
dc.date.accessioned	2015-05-23T06:01:35Z
dc.date.available	2015-05-23T06:01:35Z
dc.date.issued	2007
dc.identifier.citation	Journal of Solid State Chemistry 180(7):2143-2148;Jul 2007	en_US
dc.identifier.issn	0022-4596
dc.identifier.uri	http://ir.niist.res.in:8080/jspui/handle/123456789/1827
dc.description.abstract	Raman spectroscopy was employed to investigate the structures and phonon modes of Ba2InTaO6 and Sr2InTaO6 ceramics. It was found that Ba-based samples belong to the tetragonal P4/mnc (#128 or D-4h(6)) space group, while Sr-based materials belong to the monoclinic P2(I)/n (#14 or C-2h(5)) space group. Low-temperature measurements did not show any phase transition down to 77K. Lorentzian lines were used to fit the experimental data, which presented 14 phonon modes for Ba2InTaO6 and 24 modes for Sr2InTaO6, in perfcct agreement with the theoretical factor-group analyses for the proposed structures. This paper reports, for the first time, a tetragonal P4/mnc structure for an indium-containing perovskite material.	en_US
dc.language.iso	en	en_US
dc.publisher	Elsevier	en_US
dc.subject	Perovskites	en_US
dc.subject	Indium	en_US
dc.subject	Raman spectroscopy	en_US
dc.subject	Crystal structures	en_US
dc.title	Raman-spectroscopic investigation of Ba2InTaO6 and Sr2InTaO6 perovskites	en_US
dc.type	Article	en_US
niist.citation