Abstract
The synthesis of (Ba0.99Ca0.01)(Zr0.2Ti0.8)O3 (BCZT) and doped (Ba0.99Ca0.01)(Zr0.2Ti0.8-xMnx)O3 (BCZT-xMn) ceramics was successfully carried out by the solid-state method. The doping effect is followed by X-ray powder diffraction, scanning electron microscopy (SEM), and dielectric and conductivity measurements. Indeed, X-ray diffraction measurements show the crystalline structure of ceramics. SEM images indicate the doping effect on the studied perovskite microstructure. The results indicate that during doping the maximum value of the temperature (Tm) of the dielectric constant varies slightly, and there will be a considerable decrease in permittivity, dielectric losses and conductivity. Manganese ions are well integrated in the perovskite while maintaining the solid solution.
Highlights
Since the 1950s, the Pb based ceramic perovskite compositions like Pb(Zr1-xTix)O3(PZT) and PbMg1/3Nb2/3O3 (PMN) have been frequently used worldwide for their dielectric properties [1,2]
The results indicate that during doping the maximum value of the temperature (Tm) of the dielectric constant varies slightly, and there will be a considerable decrease in permittivity, dielectric losses and conductivity
To monitor the effect of Mn doping on the dielectric permittivity and dielectric losses of BCZT-xMn ceramics, measurements will be made for BCZT ceramics and both doped, and recorded in Figure 2 for a frequency range from 1 kHz to 1MHz
Summary
Since the 1950s, the Pb based ceramic perovskite compositions like Pb(Zr1-xTix)O3. (PZT) and PbMg1/3Nb2/3O3 (PMN) have been frequently used worldwide for their dielectric properties [1,2]. (PZT) and PbMg1/3Nb2/3O3 (PMN) have been frequently used worldwide for their dielectric properties [1,2] This material has a very high dielectric permittivity at the Curie temperature and a coupling coefficient too. For this reason, it is found useful in various fields of applications such as transducers and sensors [3,4,5]. The addition of a dopant to (BCZT) ceramics can improve densification, dielectric and ferroelectric properties. Mn doping at B sites of the perovskite (Ba0.99Ca0.01)(Zr0.2Ti0.8-xMnx)O3 (BCZT-xMn) structure creates a variety of compositions with many properties similar to those of lead ceramics, such as cooling devices and dielectric responses enhanced by the rhombohedral (R) and tetragonal (T) phases separated by an intermediate orthorhombic (O) phase
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