Acoustically driven ferroelastic domain switching observed by time-resolved x-ray diffraction
Författare
Summary, in English
Domain polarization switching in potassium dihydrogen phosphate (KH2PO4, KDP) induced by a propagating strain wave has been observed with time-resolved x-ray diffraction. A pulsed electric field with amplitude of 6 kV/cm and duration of 1 mu s was applied along the crystallographic c axis. The field-induced strain waves emanating from the sample surfaces are the result of the converse piezoelectric effect. In the center of the probed surface two waves interfered constructively inducing ferroelastic domain switching, in the absence of an external electric field, at a delay of 3 mu s, corresponding to acoustic propagation at a velocity found to be 1500 m/s.
Avdelning/ar
Publiceringsår
2010
Språk
Engelska
Publikation/Tidskrift/Serie
Physical Review B (Condensed Matter and Materials Physics)
Volym
81
Issue
2
Dokumenttyp
Artikel i tidskrift
Förlag
American Physical Society
Ämne
- Atom and Molecular Physics and Optics
- Natural Sciences
- Physical Sciences
Status
Published
ISBN/ISSN/Övrigt
- ISSN: 1098-0121