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Hadrane, B., Deniard, P., Jeannot, C., Trenque, I., Dessapt, R. & Payen, C. (2023) Microstructured layered-kagome BaCo3(VO4)(2)(OH)(2) with variable crystallite size: alternative synthetic route and comparison with nanostructured samples. Dalton Transactions, 52 3501–3507. 
Added by: Richard Baschera (2023-03-21 14:10:07)   Last edited by: Richard Baschera (2023-03-21 14:27:55)
Type de référence: Article
DOI: 10.1039/d2dt04110c
Numéro d'identification (ISBN etc.): 1477-9226
Clé BibTeX: Hadrane2023
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Catégories: MIOPS
Créateurs: Deniard, Dessapt, Hadrane, Jeannot, Payen, Trenque
Collection: Dalton Transactions
Consultations : 17/147
Indice de consultation : 34%
Indice de popularité : 8.5%
Microplatelets of the layered-kagome compound BaCo3(VO4)(2)(OH)(2), which is the Co2+ analogue of mineral vesignieite BaCu3(VO4)(2)(OH)(2), have been prepared with very high yield by hydrothermal reaction using synthetic karpenkoite Co3V2O7(OH)(2)center dot 2H(2)O as starting reagent. The Rietveld refinement of X-ray diffraction data indicates that Co3V2O7(OH)(2)center dot 2H(2)O is isostructural with martyite Zn3V2O7(OH)(2)center dot 2H(2)O. Two single-phased samples of microstructured BaCo3(VO4)(2)(OH)(2) have been characterized using powder X-ray diffraction, FT-IR and Raman spectroscopies, thermal analyses, scanning electron microscopy, energy-dispersive X-ray spectroscopy and magnetisation measurements. Their crystallite sizes perpendicular to the c-axis are in the range of 92(3) to 146(6) nm and depend on the synthesis conditions. Results have been compared to those previously obtained for quasi-spherical nanoparticles having a crystallite size of the order of 20 nm, to explore the effect of the crystallite size on the properties of BaCo3(VO4)(2)(OH)(2). This study highlights that the magnetic properties depend on the crystallite sizes only at low temperatures.
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