Title: Study of Electro-Caloric Effect in Ca and Sn co-Doped BaTiO3 Ceramics,
Abstract: The present work deals with the study of structural, ferroelectric,
dielectric and electro-caloric effects in lead free ferroelectric
polycrystalline Ba1-xCaxTi0.95Sn0.05O3 (x= 2, 5 and 10 %) i.e., Ca, Sn co-doped
BaTiO3 (BTO). Phase purity of the samples is confirmed from X-ray data by using
Rietveld refinement. 119Sn Mössbauer reveals homogenous phase as well as
iso-valent substitution of Sn at Ti site. Enhancements in ferroelectric and
dielectric properties have been observed. Indirect method which is based on
Maxwell equation has been used to determine the electro-caloric (EC) effect in
the studied ferroelectric ceramics and maximum EC coefficient is observed for
Ba0.95Ca0.05Ti0.95Sn0.05O3.