Critical sound attenuation in random uniaxial ferroelectrics

Autor:	Bosiljka Tadić, Günther Meissner, Raša Pirc
Rok vydání:	1990
Předmět:	Coupling Condensed Matter::Materials Science Dipole Materials science Electrostriction Condensed matter physics Exponent Renormalization group Condensed Matter Physics Degeneracy (mathematics) Scaling Acoustic attenuation Electronic Optical and Magnetic Materials
Zdroj:	Ferroelectrics. 104:325-330
ISSN:	1563-5112 0015-0193
DOI:	10.1080/00150199008223834
Popis:	The critical dynamics of random uniaxial dipolar materials is studied in the range of temperatures τ* ≪ τ ≪ 1, where τ = (T-Tc)/Tc and τ* is related to a degeneracy of the renormalization group scaling equations. It is shown that due to the electrostrictive coupling a new type of nonasymptotic dynamic critical behavior occurs at constant pressure. The behavior of the sound attenuation coefficients is described by an effective exponent which is parametrized both by the impurity concentration and the strength of electrostrictive coupling.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::069a7e68ac58fb0e2aa5a96040eba14a https://doi.org/10.1080/00150199008223834 Zobrazit plný text záznamu