| Texto completo | |
| Autor(es): |
Zabotto, Fabio L.
;
Barbosa, Vitor F.
;
Pereira, Carolyne C. S.
;
Estrada, Flavia R.
;
Lente, Manuel H.
;
Chen, Xiang Ming
;
Eiras, Jose A.
Número total de Autores: 7
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Journal of Alloys and Compounds; v. 929, p. 7-pg., 2022-12-25. |
| Resumo | |
Although a high technological interest, there are only a few single-phase solid solutions that exhibit multiferroic and magnetoelectric coupling at room temperature. In this work, such characteristics are reported for PZT-xPFN solid solutions. It is noticed that magnetoelectric coupling and its nature are anomalously dependent on the PFN concentration, resulting from linear magnetoelectric and paramagnetoelectric contributions. The origin of the multiferroicity and the magnetoelectric coupling is explained by considering the presence and evolution of complex defects and magnetic nanoregions caused by PFN addition. For the lower PFN (x = 0.10), the magnetic order is related to Fe-Vo complex defects. For intermediary Fe-Nb concentration (0.15 < x < 0.25), the equimolar Fe-Nb and well-distributed Fe3+ ions result in a paramagnetic system, without linear magnetoelectric coupling. Finally, for higher Fe-Nb concentrations (0.30 < x < 0.35), the magnetic order is related to the existence of Fe-rich nanoregions, resulting in a linear magnetoelectric coupling three times smaller than that measured for lower PFN content.(c) 2022 Elsevier B.V. All rights reserved. (AU) | |
| Processo FAPESP: | 19/16978-6 - Síntese e caracterização de propriedades físicas de cerâmicas multiferróicas monofásicas de Pb(Fe,Nb)-Pb(Zr,Ti)O3 |
| Beneficiário: | Ana Carolyne da Silva Pereira |
| Modalidade de apoio: | Bolsas no Brasil - Iniciação Científica |
| Processo FAPESP: | 19/03110-8 - Síntese e caracterização fotovoltaica de filmes finos à base de perovskitas ferroelétricas e multiferróicas para aplicação em células solares |
| Beneficiário: | Mahmoud Saleh Mohammed Alkathy |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |
| Processo FAPESP: | 17/13769-1 - Materiais multiferróicos e ferroelétricos para conversores de energia: síntese, propriedades, fenomenologia e aplicações |
| Beneficiário: | José Antonio Eiras |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |