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Mechanosynthesis of Gadolinium Iron Garnet
Author(s) -
Zanatta S. C.,
Cótica L. F.,
Paesano A.,
Medeiros S. N.,
Cunha J. B. M.,
Hallouche B.
Publication year - 2005
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2005.00598.x
Subject(s) - mechanosynthesis , gadolinium , stoichiometry , materials science , mössbauer spectroscopy , annealing (glass) , wüstite , analytical chemistry (journal) , diffraction , phase (matter) , ball mill , mineralogy , crystallography , chemistry , metallurgy , hematite , optics , physics , chromatography , organic chemistry
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.