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In this paper, we report the effect of Ca substitution on the structure and ferroelectric properties of BaZr 0.2 Ti 0.8 O 3 -Ba 1-x Ca x TiO 3 (BZT-BCT). The BZT-BCT samples were synthesized by solid state reaction method. The X-ray results indicate that a phase structure competition appears in the Ca-substituted samples. Based on the hysteresis loops measured by Sawyer – Towermethod, we calculated the E c and P r values with the extreme value reaching 29.6 %. The ferroelectric properties of BZT-BCT materialstrongly depend on Ca concentration. The results may be related to a pinning effect concerning with the phase-structured competition in the material.

EFFECT OF Ca CONCENTRATION SUBSTITUTING FOR Ba ON STRUCTURE AND FERROELECTRIC PROPERTIES OF BZT-BCT MATERIAL