Skip to main navigationSkip to main content
The University of Southampton
University of Southampton Malaysia

Research project: Compositionally graded ferroelectric superlattices

Currently Active: 

The compositionally graded ferroelectric based on a lead-free solid solution system such as BaxSr1-xTiO3 can exhibit large polarization gradients and desirable temperature-stable susceptibilities. This novel solid solution is not only in compliance with the future lead-free trend but also to meet the requirement of a large piezoelectric response of ferroelectrics for modern electronic applications. Therefore, it will be very interesting if we could engineer a compositionally graded ferroelectric with superlattice or multilayer structure by tailoring their composition at the atomic level. It is anticipated that through the interface effect at the layer-interfaces, exceptional or unusual physical properties and functionalities can be obtained which are unachievable in bulk and ferroelectrics thin films. Hence, this research is to develop a thermodynamic model based on the Landau-Ginzburg theory to study the fundamental physical properties of compositionally graded ferroelectric superlattices. A theoretical study on the fundamental physical properties is very crucial in the fabrication of compositionally graded ferroelectric superlattices for technological applications, for instance: transducers, high permittivity dielectrics, pyroelectric sensors, piezoelectric devices, tunable ferroelectric capacitor and et al.

Share this research project Share this on Facebook Share this on Twitter Share this on Weibo
Privacy Settings