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Nanotalk - Phase transitions in perovskite thin films

About this event

In this DENSsolutions Nanotalk, Dr. Tobias Meyer from the Institute of Materials Physics at the Georg-August University of Göttingen presents his research on phase transitions in perovskite thin films.

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Abstract

The rich phase diagram of bulk perovskite Pr1−xCaxMnO3 has resulted in a high tunability of physical properties. This has given rise to various studies related to fundamental research as well as prospective applications of the material. Importantly, as a consequence of strong correlation effects, electronic and lattice degrees of freedom are vigorously coupled. Hence, it is debatable whether such bulk phase diagrams can be transferred to inherently strained epitaxial thin films.

During this DENSsolutions Nanotalk, Dr. Tobias Meyer will present the structural orthorhombic to pseudo-cubic transition for x = 0.1 in ion-beam sputtered thin films. He will also point out the differences in the respective bulk system by employing in-situ heating nano-beam electron diffraction, following the temperature dependence of lattice constants. Moreover, he will demonstrate that controlling the environment during heating, i.e. preventing oxygen loss, is crucial in order to avoid irreversible structural changes.

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Hosted by

  • Guest speaker
    G
    Tobias Meyer Junior scientist @ Institute of Materials Physics at the Georg-August university Göttingen

  • Team member
    T
    Lama Elboreini Marketing Communications Specialist @ DENSsolutions

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