Thickness and temperature dependence of the magnetodynamic damping of pulsed laser deposited La0.7Sr0.3MnO3 on (111)-oriented SrTiO3

We have investigated the magnetodynamic properties of La0.7Sr0.3MnO3 (LSMO) films of thickness 10, 15 and 30nm grown on (111)-oriented SrTiO3 (STO) substrates by pulsed laser deposition. Ferromagnetic resonance (FMR) experiments were performed in the temperature range 100–300K, and the magnetodynami...

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Published in:Journal of magnetism and magnetic materials 2016-12, Vol.420, p.280-284
Main Authors: Flovik, Vegard, Macià, Ferran, Lendínez, Sergi, Hernàndez, Joan Manel, Hallsteinsen, Ingrid, Tybell, Thomas, Wahlström, Erik
Format: Article
Language:English
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Summary:We have investigated the magnetodynamic properties of La0.7Sr0.3MnO3 (LSMO) films of thickness 10, 15 and 30nm grown on (111)-oriented SrTiO3 (STO) substrates by pulsed laser deposition. Ferromagnetic resonance (FMR) experiments were performed in the temperature range 100–300K, and the magnetodynamic damping parameter α was extracted as a function of both film thickness and temperature. We found that the damping is lowest for the intermediate film thickness of 15nm with α≈2·10−3, where α is relatively constant as a function of temperature well below the Curie temperature of the respective films. •The thickness and temperature dependence of the magnetodynamic damping in epitaxial LSMO is characterized.•The low damping indicates LSMO as a promising material for application in magnetodynamic devices.•There are indications of significant strain induced negative perpendicular magnetocrystalline anisotropy.
ISSN:0304-8853
DOI:10.1016/j.jmmm.2016.07.028