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Magneto-thermal conductivity of perovskite manganite films and exchange-spring coupled superlattices

dc.contributor.advisorMoshnyaga, Vasily Prof. Dr.
dc.contributor.authorBruchmann-Bamberg, Vitaly
dc.titleMagneto-thermal conductivity of perovskite manganite films and exchange-spring coupled superlatticesde
dc.contributor.refereeMoshnyaga, Vasily Prof. Dr.
dc.subject.gokPhysik (PPN621336750)de
dc.description.abstractengIn this thesis, thin colossal magnetoresistive perovskite manganite films and superlattices forming an exchange spring magnet were studied regarding their magneto-thermal conductivity. Using the metalorganic aerosol deposition technique high quality films and superlattices were grown on different substrates and were analyzed with the 3-omega method for thermal conductivity measurements which was implemented into a physical property measurement system setup. Single thin films of lanthanum praseodymium calcium manganite showed an expected behavior of positive magneto-thermal conductivity known from literature bulk measurements with only slight deviations related to thin film geometry, whereas superlattices of perovskite/double perovskite superlattices of lanthanum strontium/lanthanum cobalt manganite were found to have perpendicular magnetic anisotropy and both positive and negative magneto-thermal conductivity dependent on the magnetic spin order/disorder that can be controlled by external magnetic
dc.contributor.coRefereeJooß, Christian Prof. Dr.
dc.subject.engThin films, superlattices, colossal magnetoresistance, exchange spring magnet, perpendicular magnetic anisotropy, magneto-thermal conductivityde
dc.affiliation.instituteFakultät für Physikde
dc.notes.confirmationsentConfirmation sent 2024-02-21T19:45:01de

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