Scientific Results

In situ visualization of domain kinetics in flux grown KTiOPO4 by digital holography

Year: 2007

Authors: Canalias C., Pasiskevicius V., Laurell F., Grilli S., Ferraro P., De Natale P.

Autors Affiliation: Applied Physics Department, Royal Institute of Technology, SE-10691 Stockholm, Sweden; Istituto Nazionale di Ottica Applicata, Sezione di Napoli, Campi Flegrei 34, 80078, Pozzuoli (NA), Italy

Abstract: The fast dynamic evolution of ferroelectric domains during electric field poling in flux grown KTiOPO4 crystals was investigated online by a digital holography based technique. The dependence of the ferroelectric domain kinetics on the electric field temporal wave form and poling history was studied. High-speed imaging by means of a complementary metal-oxide-semiconductor image sensor camera allowed in situ measurement of the domain wall propagation speed under different poling conditions. The results also give evidence of the strong influence of the dielectric surface layer in this material.

Journal/Review: JOURNAL OF APPLIED PHYSICS

Volume: 102 (6)      Pages from: 064105-1  to: 064105-7

KeyWords: Crystal structure; Electric fields; High speed cameras; Holography; Image sensors; Magnetic flux; MOS devices, Digital holography; Domain kinetics; High-speed imaging; In situ visualization, Ferroelectric materials
DOI: 10.1063/1.2781567

Citations: 12
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English