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Movements of ferroelectric domain walls in barium titanate single crystals studied by means of digital holographic interferometry and nonlinear dielectric measurements
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SYSNO ASEP 0452840 Druh ASEP O - Ostatní výsledky Zařazení RIV O - Ostatní Název Movements of ferroelectric domain walls in barium titanate single crystals studied by means of digital holographic interferometry and nonlinear dielectric measurements Tvůrce(i) Mokrý, Pavel (UFP-V) RID
Steiger, Kateřina (UFP-V) RID
Psota, Pavel (UFP-V) RID, ORCID
Doleček, Roman (UFP-V) RID
Václavík, Jan (UFP-V) RID
Vápenka, David (UFP-V) RID
Vojtíšek, Petr (UFP-V) RID
Lédl, Vít (UFP-V) RIDRok vydání 2015 Jazyk dok. eng - angličtina Země vyd. CZ - Česká republika Klíč. slova Digital holographic interferometry ; Ferroelectric domains ; Ferroelectric domain walls Vědní obor RIV BH - Optika, masery a lasery CEP LO1206 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy GA14-32228S GA ČR - Grantová agentura ČR Institucionální podpora UFP-V - RVO:61389021 Anotace European meeting on Ferroelectricity/13./; 28.06. - 03.07.2015;Porto,Portugal It is known that the permittivity of ferroelectric polydomain films and single crystals is enhanced by reversible movement of domain walls. It is believed that the origin of the reversible domain wall motion in weak AC electric fields is due to the interaction of the domain walls with pinning centers in the ferroelectric bulk. There exist two mechanisms of reversible domain wall movement: first, the bending of free segments of the domain wall and, second, the planar movement of the whole domain wall. Recently, the nonlinear dielectric response of the two mechanisms of the domain wall movement has been analyzed theoretically [1, 2]. It has been shown that the both mechanisms of the reversible domain wall movement introduce different features into the nonlinear dielectric response. Therefore, it is possible to identify mechanisms that dominates the ferroelectric domain wall movement by means of nonlinear Pracoviště Ústav fyziky plazmatu Kontakt Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Rok sběru 2016
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