Multiple instabilities in Bi4Ti3O12: A ferroelectric beyond the soft-mode paradigm
نویسندگان
چکیده
J. M. Perez-Mato,1,* P. Blaha,2 K. Schwarz,2 M. Aroyo,1 D. Orobengoa,1 I. Etxebarria,3 and Alberto García4 1Departamento de Física de la Materia Condensada, Facultad de Ciencia y Tecnología, Universidad del País Vasco, Apartado 644, E-48080 Bilbao, Spain 2Institute of Materials Chemistry, Vienna University of Technology, A-1060 Vienna, Getreidemarkt 9/165-TC, Austria 3Fisika Aplikatua II Saila, Zientzia eta Teknologia Facultatea, Euskal Herriko Unibertsitatea, P.K. 644, E-48080 Bilbao, Spain 4Institut de Ciencia de Materials de Barcelona, CSIC, Campus de la UAB, E-08193 Bellaterra, Spain Received 25 February 2008; published 7 May 2008
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تاریخ انتشار 2008