Vignaswaran K. Veerapandiyan

TL;DR: Some of the main strategies to improve the energy density properties of perovskite lead-free relaxor systems are reviewed, including chemical modification at different crystallographic sites, chemical additives that do not target lattice sites, and novel processing approaches dedicated to bulk ceramics, thick and thin films, respectively.

TL;DR: In this paper, the change in B-site vacancy concentration for heterovalent substituted barium titanate (BaTiO3, BT) based ferroelectrics was investigated using Raman spectroscopy.

TL;DR: The existence and atomic-level structure of the hypothetical polar nanoclusters above the Curie temperature is one of the oldest open questions in the physics of ferroelectrics as discussed by the authors.

TL;DR: Direct visualize and quantitatively describe static, 2–4 nm large polar nanoclusters in the nominally non-polar cubic phases of (Ba,Sr)TiO3 and Ba TiO3, which have implications on understanding of the atomic-scale structure of disordered materials, the origin of precursor states in ferroelectrics, and may help answering ambiguities on the dynamic-versus-static nature of nano-sized clusters.

TL;DR: In this paper, structural and dielectric characterization of Ba{[Gax,Tax]Ti(1-2x)O3 ceramics with x equal to 0, 0.0025, 0., 0.005 and 0.05 have been performed by conventional solid-state reaction.