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Microcrystalline Gd2MoO6 prepared by combined mechanochemical/thermal process and its magnetic properties.
- Source :
-
Journal of Materials Science . Apr2019, Vol. 54 Issue 8, p6111-6121. 11p. 1 Diagram, 2 Charts, 5 Graphs. - Publication Year :
- 2019
-
Abstract
- Gadolinium oxymolybdate, Gd2MoO6 (monoclinic, C2/c) was prepared via nonconventional mechanochemical/thermal process from powdered oxide precursors (Gd2O3 and (NH4)2MoO4). The effect of mechanical activation via high-energy ball milling on the reactivity of the stoichiometric Gd2O3 + (NH4)2MoO4 mixture was studied by thermal analysis (TG-DSC) and Fourier-transform infrared spectroscopy. While thermal treatment of nonactivated mixture leads only to decomposition of (NH4)2MoO4 and formation of Gd2O3-MoO3 system, mechanical activation provides enough energy for a chemical reaction between both reactants. The product with an average crystallite size of approximately 1 μm shows a well-faceted morphology. The investigation of magnetic properties revealed antiferromagnetic coupling, which is attributed to exchange interactions. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00222461
- Volume :
- 54
- Issue :
- 8
- Database :
- Academic Search Index
- Journal :
- Journal of Materials Science
- Publication Type :
- Academic Journal
- Accession number :
- 134415506
- Full Text :
- https://doi.org/10.1007/s10853-019-03331-z