INVESTIGADORES
RODRIGUEZ TORRES Claudia Elena
artículos
Título:
The role of the dopants and oxygen vacancies in the magnetic response of Fe-doped and (Fe, Sn) co-doped SrTiO3 perovskite oxide
Autor/es:
NAVARRO, AZUCENA M. MUDARRA; RODRIGUEZ TORRES, CLAUDIA; NOMURA, KIYOSHI; TAKAHASHI, MASASHI; ERRICO, LEONARDO
Revista:
Hyperfine Interactions
Editorial:
Springer Nature
Referencias:
Año: 2024 vol. 245
Resumen:
In this work we present a combined theoretical and experimental study of the structural,magnetic, and hyperfine properties of Fe doped and (Fe, Sn) co-doped SrTiO3perovskite(STO). 57Fe-Mössbauer spectroscopy (57Fe-MS) was employed to determine the hyperfineinteractions at the Fe sites of doped STO for different Fe and Sn concentrations. The theoreticalstudy was performed in the framework of the Density Functional Theory (DFT)using the full-potential linearized augmented plane wave (FP-LAPW) method. The effectof the oxygen vacancies on the magnetic and hyperfine properties and on the magneticalignment of Fe and Sn impurities was studied. The combination of the DFT calculations,considering different structural models for doped-STO, and 57Fe-MS enable us to obtain astructural characterization of Fe-doped and (Fe, Sn) co-doped STO and to explain the originof the observed hyperfine interactions and the magnetic signal.
