Partículas nanométricas de ferritas de ítrio
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Data
1999-12-01
Título da Revista
ISSN da Revista
Título de Volume
Editor
Sociedade Brasileira de Química
Resumo
Nanoparticles of yttrium iron garnet (YIG) were obtained by coprecipitation. The particles were prepared by hydrolysis in acid medium with addition of ammonia or urea, for homogeneous nucleation, at 90ºC. Different compositions and spherical morphologies were achieved by changing reactants concentrations and precipitation agent. X-ray diffractometry, transmission electron microscopy, differential thermal analysis and electrophoretic mobility were carried out on these particles to investigate the obtained phase, phase transition temperature, morphology, particle size and zeta potential, respectively.
Descrição
Palavras-chave
nanometric particles, yttrium iron garnet, voprecipitation, ferrite
Como citar
Química Nova. Sociedade Brasileira de Química, v. 22, n. 6, p. 783-786, 1999.