X-ray and neutron diffraction analysis of Ca-Sr-Ti-Fe-O compounds
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2010
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ENCONTRO DA SBPMAT - SOCIEDADE BRASILEIRA DE PESQUISA EM MATERIAIS, 9.
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Resumo
CaTiyFe1-yO3-δ, SrTiyFe1-yO3-δ and Ca0.5 Sr0.5TiyFe1-yO3-δ (y~0.65) compounds were
synthesized by the polymeric precursor technique and by the ceramic route. The resins
resulting from the chemical synthesis were calcined in the 400-1000ºC range producing
powders with different average particle sizes, evaluated by the laser scattering technique.
Room temperature and in situ high temperature (θ-θ Bragg-Brentano configuration up to
1200ºC with Anton Paar high temperature sample chamber and Braun position sensitive
detector) X-ray diffraction, high resolution X-ray diffraction as well as room temperature
neutron diffraction experiments (with improved data collection by position sensitive
detectors) were carried out in powders heat treated for several hours to increase the average
crystallite sizes. Rietveld analyses were performed for structural phase evaluation. Lattice
parameter determinations show the partial substitution of Ca2+ for Sr2+, and the perovskite
ABO3 cubic/orthorhombic structures.
Como referenciar
CARMO, J.R.; MARTINEZ, L.G.; MAZZOCCHI, V.L.; PARENTE, C.B.R.; MESTNIK FILHO, J.; ORLANDO, M.T.A.; CORREA, H.P.S. X-ray and neutron diffraction analysis of Ca-Sr-Ti-Fe-O compounds. In: ENCONTRO DA SBPMAT - SOCIEDADE BRASILEIRA DE PESQUISA EM MATERIAIS, 9., 24-28 de outubro, 2010, Ouro Preto, MG. Resumos... Disponível em: http://repositorio.ipen.br/handle/123456789/21228. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.