RT Journal Article
T1 Tuning magnetoconductivity in LaMnO3 NPs through cationic vacancy control
A1 Hernando Grande, Antonio
A1 Ruiz González, María Luisa
A1 Díaz, Omar
A1 Alonso Gómez, José Miguel
A1 Martínez, José L.
A1 Ayuela, Andrés
A1 González Calbet, José María
A1 Cortés Gil, Raquel
AB The inclusion of La-Mn vacancies in LaMnO3 nanoparticles leads to a noticeable change in conductivity behavior. The sample retains its overall insulator characteristic, with a typical thermal activation mechanism at high temperatures, but it presents high magnetoconductivity below 200 K. The activation energy decreases linearly with the square of the reduced magnetization and vanishes when the sample is magnetized at saturation. Therefore, it turns out that electron hopping between Mn3+ and Mn4+ largely contributes to the conductivity below the Curie temperature. The influence of the applied magnetic field on conductivity also supports the hypothesis of hopping contribution, and the electric behavior can be explained as being due to an increase in the hopping probability via spin alignment.
PB MDPI
YR 2023
FD 2023-05-10
LK https://hdl.handle.net/20.500.14352/103884
UL https://hdl.handle.net/20.500.14352/103884
LA eng
NO Hernando, A.; Ruiz-González, M.L.; Diaz, O.; Alonso, J.M.; Martínez, J.L.; Ayuela, A.; González-Calbet, J.M.; Cortés-Gil, R. Tuning Magnetoconductivity in LaMnO3 NPs through Cationic Vacancy Control. Nanomaterials 2023, 13, 1601
NO 2023 Descuentos MDPI
NO Ministerio de Ciencia e Innovación (España)
DS Docta Complutense
RD 30 jul 2025