Effects of oxygen vacancies on polarization stability of barium titanate
MetadataShow full item record
© 2016, Science China Press and Springer-Verlag Berlin Heidelberg. Oxygen vacancy, a kind of native point defects in ferroelectric ceramics, usually causes an increase of the dielectric loss. Based on experimental observations, it is believed that all of the oxygen vacancies are an unfavorable factor for energy saving. By using molecular dynamics simulations, we show that the increase of coercive and saturated electric fields is due to the difficulty to switch local polarization near an oxygen vacancy, and so that a ferroelectric device has to sustain the rising consumption of energy. The simulation results also uncover how oxygen vacancies influence ferroelectric properties.
Showing items related by title, author, creator and subject.
Zhang, X.; Motuzas, J.; Liu, Shaomin; Diniz da Costa, J. (2017)This work investigates the partial substitution of Zn in the B-site of perovskite as Ba 0.5 Sr 0.5 (Co 0.8 Fe 0.2 ) 1- x Zn x O 3- d . The membranes were tested for oxygen separation from air and Zn incorporation into the ...
Cheng, Z.; Liu, T.; Yang, C.; Gan, H.; Chen, J.; Zhang, Feiwu (2013)In the framework of the ab initio atomic thermodynamics, the preliminary analysis of the oxygen defectsin anatase TiO2 has been done by investigating the influence of the annealing treatment under representative conditions ...
Zheng, Y.; Ran, R.; Shao, Zongping (2008)Electrochemical impedance spectroscopy, step current polarization, and cyclic voltammetry were applied to investigate the activation and deactivation kinetics of oxygen reduction over a novel La0.8Sr 0.2Sc0.1Mn0.9O3 (LSSM) ...