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|Title:||Residual strains and dielectric properties of Pb0.7la 0.2TiO3-based perovskites||Authors:||Soon, H.P.
|Issue Date:||2005||Citation:||Soon, H.P.,Xue, J.M.,Wang, J. (2005). Residual strains and dielectric properties of Pb0.7la 0.2TiO3-based perovskites. IEEE International Symposium on Applications of Ferroelectrics : 320-323. ScholarBank@NUS Repository.||Abstract:||A correlation between the local structural distortions and dielectric behaviors of Pb0.7La0.2TiO3 (PLT-A20) was developed on the basis of XRD residual strain analyses. It was observed that A-site iso-valent substitutions with various ionic sizes, i.e. Ba2+ and Sr2+, generate tensile and compressive lattice mismatch strains, which are balanced delicately by the long-range Coulombic forces and short-range repulsions, leading to a breakdown in dipolar long-range order. Thus, both dielectric transition from normal ferroelectric to relaxor and enhancement in diffuse phase transition (DPT) are observed by increasing the level of Ba 2+ and Sr2+ substitution in PLT-A20, respectively. © 2004 IEEE.||Source Title:||IEEE International Symposium on Applications of Ferroelectrics||URI:||http://scholarbank.nus.edu.sg/handle/10635/107300|
|Appears in Collections:||Staff Publications|
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