| Texto completo | |
| Autor(es): |
Aristizabal-Giraldo, Deisy
;
Arantes, Fabiana R.
;
Osorio-Guillen, Jorge M.
;
Avila, Marcos A.
Número total de Autores: 4
|
| Tipo de documento: | Artigo Científico |
| Fonte: | PHYSICA B-CONDENSED MATTER; v. 677, p. 9-pg., 2024-01-31. |
| Resumo | |
We report the magnetic properties of the Y -doped GdNiSi3 intermetallic compound, prepared by Sn-flux method and investigated by susceptibility, magnetization and heat capacity measurements. The results indicate that the antiferromagnetic structure of GdNiSi3 is altered by Y concentration allowing that the coexistence between antiferromagnetic/ferrimagnetic state takes place under slight changes in the strong RKKY interaction. This is confirmed by supercell first -principles calculations using Density Functional Theory along with a Hubbard U parameter (DFT+U). The emerging ferrimagnetic order creates the necessary conditions for the existence of strong exchange anisotropy interaction responsible by the exchange bias effect in Gd0.50Y0.50NiSi3 and Gd0.35Y0.65NiSi3 single crystal. (AU) | |
| Processo FAPESP: | 14/20365-6 - Preparação e caracterização de novos clatratos termoelétricos contendo terras raras trivalentes e aceitadores mistos |
| Beneficiário: | Fabiana Rodrigues Arantes |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |
| Processo FAPESP: | 17/10581-1 - Fenômenos emergentes em sistemas de dimensões reduzidas |
| Beneficiário: | Pascoal Jose Giglio Pagliuso |
| Modalidade de apoio: | Auxílio à Pesquisa - Projetos Especiais |