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- W3200219987 abstract "Lead-free 0.5Ba(Zr0.2Ti0.8)O3-0.5(Ba0.7Ca0.3)TiO3 composites have been synthesized via sol-gel chemical route. We have systematically investigated the influence of sintering temperature on the structural, dielectric, ferroelectric and piezoelectric properties of the BZT-BCT composites. These characterizations suggest that BZT-BCT composites are promising lead-free piezoelectric materials. The 0.5Ba(Zr0.2Ti0.8)O3-0.5(Ba0.7Ca0.3)TiO3 composites were prepared by combining Ba(Zr0.2Ti0.8)O3 (BZT) and (Ba0.7Ca0.3)TiO3 (BCT) powders sintered at temperature 900-14000C for 5h. The phase structure was investigated by X-ray diffractrometer (PANalitical’s X’pert PRO). The microstructural properties of BZT-BCT composites were examined using a scanning electron microscope (SEM) (JSM 6510LV, JEOL, JAPAN). The dielectric properties were investigated using an impedance analyzer (Wayne-kerr 6500B, UK). The ferroelectric properties were studied using a ferroelectric test system (Marine India P-E loop tracer). The current density of BZT-BCT composites has been measured using Keithely source meter at room temperature. The piezoelectric coefficient d33 was measured using a quasi-static piezoelectric co-efficient testing meter. The influence of sintering temperature on phase evolution and grain size of BZT-BCT composites has been analyzed. The dielectric constant and loss and phase transition temperature of prepared samples were analyzed with varying sintering temperature. The variation of ferroelectric properties such as saturation polarization (Ps), remanent polarization (Pr) and coercive field (Ec) of BZT-BCT composites have been addressed with varying sintering temperature.The BZT-BCT composite sintered at 13000C exhibits enhanced ferroelectric properties with saturation polarization Ps ~ 11.2 μC/cm2. On the other hand, the high dielectric constant value of eʹ ~ 2874 at frequency 100 kHz and piezoelectric coefficient d33 ~ 278 pC/N have been measured for the composite sintered at 14000C." @default.
- W3200219987 created "2021-09-27" @default.
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- W3200219987 date "2021-09-17" @default.
- W3200219987 modified "2023-09-28" @default.
- W3200219987 title "Sintering temperature driven structural, dielectric, ferroelectric and piezoelectric properties of 0.5Ba(Zr0.2Ti0.8)O3-0.5(Ba0.7Ca0.3)TiO3 lead-free composites : lead-free 0.5Ba(Zr0.2Ti0.8)O3-0.5(Ba0.7Ca0.3)TiO3 composites" @default.
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