Berlin 2018 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 42: Thin films – anisotropy

MA 42.6: Vortrag

Donnerstag, 15. März 2018, 11:00–11:15, EB 301

Temperature dependent magnetocrystalline anisotropy model for La_0.7Sr_0.3MnO₃ thin films grown on SrTiO₃ (001) and NdGaO₃ (110) substrates — •Camillo Ballani, Christoph Hauser, Christian Eisenschmidt, and Georg Schmidt — Institut für Physik, Martin-Luther-Universität Halle-Wittenberg, Von-Danckelmann-Platz 3, 06120 Halle (Saale), Germany

A well-understood magnetocrystalline anisotropy model for ferromagnetic thin films plays a crucial role in describing spin wave propagation [1], magnetization reversal processes and related effects like tunnelling anisotropic magnetoresistance (TAMR) in organic spin valves [2]. We present a study of La_0.7Sr_0.3MnO₃ (001) thin films epitaxially grown via Pulsed Laser Deposition (PLD) on SrTiO₃ (001) and NdGaO₃ (110) substrates, which induce tensile and non-homogeneous compressive strain in the film plane, respectively. A detailed temperature dependent model for the magnetocrystalline anisotropy in these films is derived from Ferromagnetic Resonance (FMR) measurements and SQUID magnetometry.

[1] K. Sekiguchi et al., NPG Asia Materials 9, e392 (2017)

[2] M. Grünewald et al., Phys. Rev. B 90, 205208 (2014)