Raman scattering and infrared spectroscopy of chemically substituted Sr(2)LnTaO(6) (Ln = Lanthanides, Y, and In) double perovskites

Dias, A; Abdul Khalam, L; Sebastian, M T; Lage, M M; Matinaga, F M; Moreira, R L

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dc.contributor.author	Dias, A
dc.contributor.author	Abdul Khalam, L
dc.contributor.author	Sebastian, M T
dc.contributor.author	Lage, M M
dc.contributor.author	Matinaga, F M
dc.contributor.author	Moreira, R L
dc.date.accessioned	2015-08-05T11:22:39Z
dc.date.available	2015-08-05T11:22:39Z
dc.date.issued	2008
dc.identifier.citation	Chemistry of Materials 20(16):5253-5259;26 Aug 2008	en_US
dc.identifier.issn	0897-4756
dc.identifier.uri	http://ir.niist.res.in:8080/jspui/handle/123456789/1892
dc.description.abstract	Sr(2)LnTaO(6) (Ln = lanthanides, Y, and In) ceramics were prepared by a solid-state route, and their vibrational phonon modes were investigated using Raman and infrared (IR) spectroscopic techniques. Lorentzian lines were used to fit the Raman spectra, which showed 24 bands in perfect agreement with theoretical calculations. The IR spectra were fitted with a four-parameter semiquantum model, and the results showed 17 bands for the materials. The position and width of the phonon modes were determined and correlated to the ionic radii for the different atoms substituted in the B'-site. It was verified that all materials belong to the monoclinic P2(1)/n (C-2h(5)) structure.	en_US
dc.language.iso	en	en_US
dc.publisher	American Chemical Society	en_US
dc.subject	Microwave dielectric-properties	en_US
dc.subject	Ordered double perovskites	en_US
dc.subject	Ionic parameters	en_US
dc.subject	Solid-solutions	en_US
dc.subject	Phonon modes	en_US
dc.subject	Nonstoichiometry	en_US
dc.title	Raman scattering and infrared spectroscopy of chemically substituted Sr(2)LnTaO(6) (Ln = Lanthanides, Y, and In) double perovskites	en_US
dc.type	Article	en_US