4.4 Article

Investigation of Dielectric and Energy Storage Performance of (1-x)BaTiO3-xBi(Zn2/3Nb1/3)O3 Ceramic for Possible MLCC Application

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ELECTROCHEMICAL SOC INC
DOI: 10.1149/2162-8777/acd145

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This manuscript presents the dielectric and energy-storage performance of (1-x)BaTiO3(BT)-xBi(Zn2/3Nb1/3)O-3(BZN) [0 <= x <= 0.15] materials for potential multilayer ceramic capacitor application. The ceramics were prepared using the solid-state reaction method. X-ray diffraction analysis showed the formation of pure perovskite pseudo-cubic structure. The dielectric behavior was analyzed to understand the effect of BZN concentration, and the thermal stability was evaluated using the temperature Coefficient of Capacitance (TCC). The P-E hysteresis loop measurements revealed that 0.15 mol% of BT-BZN exhibited the highest resistance to electrical breakdown, and the energy storage efficiency was maximized at x = 0.15. Frequency stability of polarization was obtained for 0.85BT-0.15 BZN ceramic.
The dielectric and energy-storage performance of (1-x)BaTiO3(BT)-xBi(Zn2/3Nb1/3)O-3(BZN) [0 <= x <= 0.15] materials are presented in this manuscript for potential multilayer ceramic capacitor application. The solid-state reaction method is adapted for the preparation of the ceramics. X-ray diffraction patterns of the ceramics reveal the formation of pure perovskite pseudo-cubic structure with space group P m -3 m. Temperature and frequency-dependent dielectric behavior are analyzed to understand the change in dielectric performance with the rise in BZN concentration. The degree of diffuseness in the phase transition has been analyzed by using the modified Curie-Weiss Law. The temperature Coefficient of Capacitance (TCC) has been calculated to analyze the thermal stability of the material. The P-E hysteresis loop measurement has been carried out at different applied fields and found that 0.15 mol% of BT-BZN can withstand maximum electric field exposure without undergoing any electrical breakdown. The energy storage efficiency is calculated for all the compositions and maximum efficiency is obtained for x = 0.15. The frequency-dependent P-E hysteresis is carried out and frequency stability of polarization is obtained for 0.85BT-0.15 BZN ceramic.

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