Effect of Electric Field and Temperature on Average Structure and Domain Wall Motion in 0.93Bi0.5Na0.5TiO3-0.07BaTiO3 Ceramic. (28th July 2013)

• Record Type: Journal Article
• Authors: Wang, Jian; Liu, Yun; Studer, Andrew; Norén, Lasse; Withers, Ray
• Other Names: Wang Danyang Academic Editor.
• Is Part Of: Advances in condensed matter physics. Volume 2013(2013)
• Publication Date: 2013-07-28
• Subjects: Condensed matter -- Periodicals; Condensed matter; Periodicals; 530.41
• DOI: 10.1155/2013/830971
• Languages: English
• ISSNs: 1687-8124

Abstract

Abstract : In situ neutron powder diffraction patterns and dielectric spectra of 0.93Bi0.5 Na0.5 TiO3 -0.07BaTiO3 ceramic were investigated under different electrical fields and temperatures. An electric-field-induced phase transition from metrically cubic to metrically tetragonal, associated with strong domain wall motion, occurs. Such induced phase and domain wall motion are unchanged until the high-temperature phase transition occurs from metrically tetragonal to metrically cubic. All these changes are irrelevant to the observed depolarization temperature (75°C). The depolarization behaviour is thus suggested to be associated with the local structure caused by the octahedral tilt twinning disorder.