Produção Nacional
Revisado por pares
Partículas nanométricas de ferritas de ítrio
1999; Brazilian Chemical Society; Volume: 22; Issue: 6 Linguagem: Inglês
10.1590/s0100-40421999000600002
ISSN1678-7064
AutoresRicardo H. M. Godoi, Miguel Jafelicci, Rodrigo Fernando Costa Marques, Laudemir C. Varanda, Roberto da Costa Lima,
Tópico(s)Magneto-Optical Properties and Applications
ResumoNANOMETRIC PARTICLES OF YTTRIUM FERRITE.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 90 o C. 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.
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