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Artigo Produção Nacional Revisado por pares
BIBTEX RIS

Mechanosynthesis of Gadolinium Iron Garnet

2005; Wiley; Volume: 88; Issue: 12 Linguagem: Inglês

10.1111/j.1551-2916.2005.00598.x

ISSN

1551-2916

Autores

Shalimar Calegari Zanatta, L. F. Cótica, Andrea Paesano, S.N. de Medeiros, J.B.M. da Cunha, B. Hallouche,

Tópico(s)

Glass properties and applications

Resumo

We investigated the mechanosynthesis of gadolinium iron garnet by high‐energy ball milling stoichiometry amounts of α‐Fe 2 O 3 and Gd 2 O 3 , followed by short thermal annealings conducted at moderate temperatures. X‐ray diffraction and Mössbauer spectroscopy results revealed, for the as‐milled samples, the formation of the GdFeO 3 perovskite phase, in relative amounts that depend on the milling time. The formation of the Gd 3 Fe 5 O 12 garnet phase was observed in 1000°C/2 h or 1100°C/3 h as‐annealed samples. The occurrence of a milling time was verified in which the relative amount of garnet phase formed by further annealing is maximized.

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