EPJ Web Conf.
Volume 233, 2020Portuguese Condensed Matter Physics National Conference (CMPNC 2019)
|Number of page(s)||6|
|Section||Thin films, Nanostructures, Artificially Structured Materials, Device Physics|
|Published online||16 April 2020|
Orthorhombic GdMnO3 Epitaxial Thin Film Grown onto SrTiO3 (110)
1 IFIMUP e Departamento de Física e Astronomia, Faculdade de Ciências da Universidade do Porto. R. Campo Alegre 687, 4169-007 Porto, Portugal
2 CQVR e Departamento de Física, Universidade de Trás-os-Montes e Alto-Douro, Ap.º 1013, 5001-801 Vila Real, Portugal
3 CQVR e Departamento de Química, Universidade de Trás-os-Montes e Alto-Douro, Ap.º 1013, 5001-801 Vila Real, Portugal
4 CICECO & LCA, Universidade de Aveiro, 3810-193 Aveiro, Portugal
5 INESC-MN, Rua Alves Redol, 9, 1000-029 Lisboa, Portugal
Published online: 16 April 2020
GdMnO3 epitaxial thin films were deposited onto (110)-oriented SrTiO3 substrates by RF magnetron sputtering. The structure, microstructure, dielectric and magnetic properties were investigated in detail. The XRD results revealed that the GdMnO3 thin films exhibit an epitaxial strained orthorhombic symmetry and grow preferably in off-plane (001) orientation, wherein the basal lattice parameters are strained by the substrate lattice. A dielectric relaxation process was ascertained, whose activation energy is sensitive to the magnetic phase transitions, occurring at 41 K and at 20 K, respectively. The canted nature of the low temperature magnetic phase is discussed.
© The Authors, published by EDP Sciences, 2020
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