| Full text | |
| Author(s): Show less - |
Brankovic, Z.
;
Brankovic, G.
;
Pocuca-Nesic, M.
;
Stanojevic, Z. Marinkovic
;
Zunic, M.
;
Golic, D. Lukovic
;
Tararam, R.
;
Cilense, M.
;
Zaghete, M. A.
;
Jaglicic, Z.
;
Jagodic, M.
;
Varela, J. A.
Total Authors: 12
|
| Document type: | Journal article |
| Source: | CERAMICS INTERNATIONAL; v. 41, n. 10, p. 6-pg., 2015-12-01. |
| Abstract | |
In this work single phase hexagonal YMnO3 powders were prepared starting from Y(CH3COO)(3)center dot xH(2)O, Mn(CH3COO)(2)center dot 4H(2)O, KMnO4 and KOH using methods of conventional (280 degrees C for 6 h) or microwave assisted hydrothermal synthesis (200 degrees C for 2 h) followed by calcination at 1200 degrees C for 2 h. According to FESEM analysis the calcined powders consisted of submicronic YMnO3 particles, which were uniform in shape and size. Ceramic samples were obtained by sintering the as-synthesized powders at 1400 degrees C for 2 h. XRD analysis confirmed the presence of the single phase hexagonal YMnO3. SEM analysis showed a dense and homogeneous microstructure with typical inter- and intra-grain cracks. Magnetic measurements indicated ferrimagnetic properties that were explained by non-stoichiometry of the obtained compound and an excess of manganese that was confirmed by ICP analysis. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved. (AU) | |
| FAPESP's process: | 11/00922-0 - Preparation of oriented ceramics by synthesis in electric and magnetic field starting from nanostructured precursors |
| Grantee: | José Arana Varela |
| Support Opportunities: | Research Grants - Visiting Researcher Grant - International |