Mechanosynthesis of Gadolinium Iron Garnet |
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| Authors: | S. C. Zanatta,L. F. Có tica,A. Paesano,Jr.,,S. N. de,Medeiros ,J. B. M. da,Cunha ,B. Hallouche |
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| Affiliation: | Departamento de Física, Universidade Estadual de Maringá, PR, Brazil; Instituto de Física, Universidade Federal do Rio Grande do Sul, RS, Brazil; Departamento de Química e Física, Universidade de Santa Cruz do Sul, RS, Brazil |
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| Abstract: | We investigated the mechanosynthesis of gadolinium iron garnet by high-energy ball milling stoichiometry amounts of α-Fe2O3 and Gd2O3, 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 GdFeO3 perovskite phase, in relative amounts that depend on the milling time. The formation of the Gd3Fe5O12 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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