Synthesis and caracterization of CTO (CaTiO3)

• Autor(a) principal: Silva, Marcelo Antonio Santos da
• Data de Publicação: 2011
• Outros Autores: Fernandes, Tatiana Sainara Maia, Santiago, Alexander Arley Xavier, Sales, Juscelino Chaves, Sombra, Antônio Sérgio Bezerra
• Tipo de documento: Artigo de conferência
• Idioma: eng
• Título da fonte: Repositório Institucional da Universidade Federal do Ceará (UFC)
• Texto Completo: http://www.repositorio.ufc.br/handle/riufc/55882
• topic: Método de sinestesia no estado sólido; Difração de raios - X; Refinamento

The objective of this work is to study the ceramic material CTO (CaTiO3) by X-Ray Diffraction. The composites of CTO are widely used in dielectric resonators in communication systems. The CTO was prepared by solid state method in a planetary high energy ball milling (Fritsch Pulverisette 5). Stoichiometric quantities of CaCO3 (Aldrich 99%) and TiO2 (Merck 99%) were dry milled during 4h with a rotational speed of 370 rpm and then calcined at 1000 ºC for 3h. After, the CTO was studied by X-ray diffraction (XRD). The refinament showed that the CTO was formed with 100% mass, the graph of Williamson-Hall showed a homogeneous sample, with a contraction in the crystal lattice and a reasonably small particle size.