Enhanced electromechanical response of ferroelectrics due to charged domain walls
نویسندگان
چکیده
منابع مشابه
Enhanced electromechanical response of ferroelectrics due to charged domain walls
While commonly used piezoelectric materials contain lead, non-hazardous, high-performance piezoelectrics are yet to be discovered. Charged domain walls in ferroelectrics are considered inactive with regards to the piezoelectric response and, therefore, are largely ignored in this search. Here we demonstrate a mechanism that leads to a strong enhancement of the dielectric and piezoelectric prope...
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Pierre Tolédano,1 Mael Guennou,2,* and Jens Kreisel2,3 1Laboratoire des Systèmes Complexes, Université de Picardie, 80000 Amiens, France 2Département Science et Analyse des Matériaux, CRP Gabriel Lippmann, 41 rue du Brill, L-4422 Luxembourg 3Physics and Materials Science Research Unit, University of Luxembourg, 41 Rue du Brill, L-4422 Belvaux, Luxembourg (Received 22 January 2014; revised manus...
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Charged domain walls in proper ferroelectrics were shown recently to possess metallic-like conductivity. Unlike conventional heterointerfaces, these walls can be displaced inside a dielectric by an electric field, which is of interest for future electronic circuitry. In addition, theory predicts that charged domain walls may influence the electromechanical response of ferroelectrics, with stron...
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The interaction of electric field with charged domain walls in ferroelectrics is theoretically addressed. A general expression for the force acting per unit area of a charged domain wall carrying free charge is derived. It is shown that, in proper ferroelectrics, the free charge carried by the wall is dependent on the size of the adjacent domains. As a result, the mobility of such domain wall (...
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ژورنال
عنوان ژورنال: Nature Communications
سال: 2012
ISSN: 2041-1723
DOI: 10.1038/ncomms1751