Person:
Alonso Gómez, José Miguel

Profile Picture
First Name
José Miguel
Last Name
Alonso Gómez
URI
https://hdl.handle.net/20.500.14352/76150
Affiliation
Universidad Complutense de Madrid
Faculty / Institute
Ciencias Químicas
Department
Química Orgánica
Area
Química Orgánica
Identifiers
UCM identifierORCIDScopus Author IDDialnet ID

Filters

20231
Reset filters

Settings

Author: Ayuela, Andrés × Subject: 54 ×

Search Results

Now showing 1 - 1 of 1
  • Thumbnail Image
    Item
    Tuning magnetoconductivity in LaMnO3 NPs through cationic vacancy control
    (Nanomaterials, 2023) Hernando Grande, Antonio; Ruiz González, María Luisa; Díaz, Omar; Alonso Gómez, José Miguel; Martínez, José L.; Ayuela, Andrés; González Calbet, José María; Cortés Gil, Raquel
    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.