| Full text | |
| Author(s): |
Oliveira, F. S.
;
Machado, A. J. S.
;
da Luz, M. S.
;
Torikachvili, M. S.
Total Authors: 4
|
| Document type: | Journal article |
| Source: | Journal of Magnetism and Magnetic Materials; v. 571, p. 4-pg., 2023-02-26. |
| Abstract | |
We carried out a study of the structural and magnetic properties of Ba2Y1-xCuxTaO6-delta (0.0 <= x <= 0.5) compounds. The cubic rock-salt double perovskite structure of Ba2YTaO6 is retained upon the partial substitution of Cu for Y up to x = 0.50 and the lattice parameter a drops at the rate of da/dx approximate to-0.17 +/- 0.01 angstrom/%Cu. While the effective moment mu eff and the Curie-Weiss temperature theta CW are nearly negligible in Ba2YTaO6, the partial substitution of Cu for Y results shows an increase in mu eff at the rate of approximate to 1.9 +/- 0.2 mu B/%Cu, consistently with the paramagnetic behavior expected for Cu2+, and a decrease in theta CW at the rate of-16 +/- 2 K/%Cu. The drive of theta CW towards more negative values is suggestive of the onset of antiferromagnetic correlations. (AU) | |
| FAPESP's process: | 09/54001-2 - Acquisition of cryogen-free equipment for the characterization of magnetic properties by vibrating sample magnetometry |
| Grantee: | Carlos Alberto Moreira dos Santos |
| Support Opportunities: | Multi-user Equipment Program |
| FAPESP's process: | 21/03298-7 - Superconductivity and magnetism in graphene-based Moiré superlattices |
| Grantee: | Felipe Souza Oliveira |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 21/14322-6 - Investigation about the coexistence between magnetism, CDW instability and superconductivity in chalcogenides of transition metals |
| Grantee: | Antonio Jefferson da Silva Machado |
| Support Opportunities: | Regular Research Grants |