Coexistence of Polar Order and Local Domain Dynamics in Ferroelectric Perovskites: The Case of SrTi18O3

Autor:	Annette Bussmann-Holder, A. R. Bishop, Helmut Büttner
Rok vydání:	2008
Předmět:	Phase transition Wavelength Materials science Condensed matter physics Polar Soft modes Symmetry breaking Condensed Matter Physics Instability Ferroelectricity Electronic Optical and Magnetic Materials Perovskite (structure)
Zdroj:	Ferroelectrics. 363:73-78
ISSN:	1563-5112 0015-0193
DOI:	10.1080/00150190802019296
Popis:	Perovskite oxide ferroelectrics show classical soft mode behaviour typical for the onset of a homogeneous long-range polar state and a displacive phase transition. Besides these long wave length properties, local effects are observed by different probes which reveal that dynamical symmetry breaking already takes place far above the actual instability. It is shown here that displacive mean-field type dynamics can indeed coexist with local dynamical symmetry breaking which is typical for order-disorder driven phase transitions.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4a1182d331720e093ea9c7124767f2d7 https://doi.org/10.1080/00150190802019296 Zobrazit plný text záznamu