Lattice Dynamics of Laser Excited Ferroelectric BaTiO3

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ISSENMANN, Daniel, Stefan SCHLEEF, Shyjumon IBRAHIMKUTTY, Gernot BUTH, Tilo BAUMBACH, Anton PLECH, Markus BEYER, Jure DEMSAR, 2012. Lattice Dynamics of Laser Excited Ferroelectric BaTiO3. In: Acta Physica Polonica A. Polish Academy of Sciences. 121(2), pp. 319-323. ISSN 0587-4246. eISSN 1898-794X. Available under: doi: 10.12693/APhysPolA.121.319

@article{Issenmann2012Latti-49273, title={Lattice Dynamics of Laser Excited Ferroelectric BaTiO3}, year={2012}, doi={10.12693/APhysPolA.121.319}, number={2}, volume={121}, issn={0587-4246}, journal={Acta Physica Polonica A}, pages={319--323}, author={Issenmann, Daniel and Schleef, Stefan and Ibrahimkutty, Shyjumon and Buth, Gernot and Baumbach, Tilo and Plech, Anton and Beyer, Markus and Demsar, Jure} }

Issenmann, Daniel Baumbach, Tilo Plech, Anton Plech, Anton Buth, Gernot Lattice Dynamics of Laser Excited Ferroelectric BaTiO<sub>3</sub> 2012 2020-04-23T12:21:48Z Beyer, Markus Schleef, Stefan Beyer, Markus Demsar, Jure Ibrahimkutty, Shyjumon Ibrahimkutty, Shyjumon Schleef, Stefan Buth, Gernot Issenmann, Daniel Demsar, Jure 2020-04-23T12:21:48Z eng We investigated the lattice dynamics of the prototypic ferroelectric barium titanate close to its ferroelectric-paraelectric phase transition aiming at a better understanding of the atomistic nature of the transition. The usage of time-resolved X-ray techniques allows to disentangle lattice motion and unit cell changes, which, in part, relate to the ferroelectric polarization. In the quasi-static case both the electrical and the laser excitation show a mean-field, simple thermal behaviour, while for time scales shorter than nanoseconds the impulsive nature of the excitation becomes visible. Baumbach, Tilo

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