Electroacoustic waves of a moving domain wall superlattice in a ferroelectric crystal

Autor:	E. A. Vilkov, N. S. Shevyakhov, S. N. Maryshev
Rok vydání:	2009
Předmět:	Physics::Fluid Dynamics Physics Condensed Matter::Materials Science Tetragonal crystal system Physics and Astronomy (miscellaneous) Condensed matter physics Lattice (order) Superlattice Wavenumber Ferroelectric crystal
Zdroj:	Technical Physics Letters. 35:326-330
ISSN:	1090-6533 1063-7850
DOI:	10.1134/s1063785009040117
Popis:	The dispersion properties of electroacoustic wave modes confined by a superlattice of 180° domain walls uniformly moving in a tetragonal ferroelectric crystal are considered. It is shown that the manifold of partial electroacoustic interfacial waves in the superlattice is restricted to the first allowed band, the configuration of which in the plane of spectral variables can significantly vary under the action of moving domain walls. For the partial electroacoustic interfacial waves with the Bloch wavenumbers χπ/d (where d is the lattice half-period), the motion of domain walls is predicted to result in splitting of the modes of a static superlattice into pairs, which is invariant with respect to reversal of the direction of motion.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ac95ddf04bd15452e0b9693f9ffac2c9 https://doi.org/10.1134/s1063785009040117 Zobrazit plný text záznamu Plný text ve formátu PDF