First-principles study of polarization and piezoelectricity behavior in tetragonal PbTiO3-based superlattices Project supported by the National Natural Science Foundation of China (Grant No. 11372085) and the Shenzhen Science and Technology Project (Grant No. JCYJ20150625142543461). |
(color online) The proportion of the piezoelectric contributions from PbTiO3 component in PbTiO3/KNbO3 and PbTiO3/LaAlO3 versus c-axis length change. |