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Structural and thermal studies of SmNbO4 polymorphs produced by mechanical alloying

[Display omitted] •High temperature SmNbO4 phase was synthetized at room temperature.•The high temperature phase is stable at least 800 °C.•A single SmNbO4 nanostructured phase was obtained with annealing at 1000 °C. A nanostructured mixture of two SmNbO4 polymorphs, one monoclinic and other tetrago...

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Published in:Materials letters 2019-10, Vol.252, p.313-316
Main Authors: de Brito Neto, Francisco Maciel, Takeno, Mitsuo Lopes, da Costa Pinto, Camila, Trichês, Daniela Menegon, Manzato, Lizandro, Michielon de Souza, Sérgio
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container_title Materials letters
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creator de Brito Neto, Francisco Maciel
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description [Display omitted] •High temperature SmNbO4 phase was synthetized at room temperature.•The high temperature phase is stable at least 800 °C.•A single SmNbO4 nanostructured phase was obtained with annealing at 1000 °C. A nanostructured mixture of two SmNbO4 polymorphs, one monoclinic and other tetragonal, was synthesized by mechanical alloying. It was the first time that the tetragonal structure was synthesized at low temperature. Both polymorphs are stable in high temperatures. A single monoclinic phase with nanometric crystallites was obtained after annealing at 1000 °C.
doi_str_mv 10.1016/j.matlet.2019.06.004
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subjects Crystallites
Materials science
Mechanical alloying
Rare-Earth
Rietveld method
Synthesis
X-ray diffraction
title Structural and thermal studies of SmNbO4 polymorphs produced by mechanical alloying
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