Abstract
We have investigated the mechanosynthesis of gadolinium iron garnet (GdIG) by high-energy ball-milling of 3.(Gd2O3) + 10.(α-Fe) followed by thermal annealing conducted at moderate temperatures (1100 °C). The samples were characterized by X-ray diffraction and Mössbauer spectroscopy in order to determine the influence of the milling time on the final products. For as-milled samples the results revealed the enlargement of the magnetic component belonging to iron and a discrete paramagnetic component. The formation of a garnet phase was observed in all as-annealed samples treated at 1100 °C for 6 h in quantities proportional to the time of grinding the precursors. Evidently, high-energy ball milling of Gd2O3 + α-Fe powders is an important step in GdIG synthesis by a ceramic method. Single-phase garnet is observed for the samples milled for 12 and 24 h treated at 1100 °C for 6 h.
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Thirteenth Latin American Conference on the Applications of the Mössbauer Effect, LACAME 2012, Medellín, Columbia, 11–16 November 2012.
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Zanatta, S.C., Ivashita, F.F., da Silva, K.L. et al. Processing of gadolinium–iron garnet under non-equilibrium conditions. Hyperfine Interact 224, 307–312 (2014). https://doi.org/10.1007/s10751-013-0813-x
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DOI: https://doi.org/10.1007/s10751-013-0813-x