Makowska Jolanta, Pawełczyk Marian, Soszyński Andrzej, Pikula Tomasz, Adamczyk-Habrajska Małgorzata
Institute of Materials Engineering, Faculty of Science and Technology, University of Silesia, 75 Pułku Piechoty 1A, 41-500 Chorzow, Poland.
Institute of Information Technologies, Mickiewicza 29, 40-085 Katowice, Poland.
Micromachines (Basel). 2024 Aug 9;15(8):1018. doi: 10.3390/mi15081018.
The perovskite-structured materials Pb0.75Ba0.251-xCax(Zr0.7Ti0.3)O3 for = 1 and 2 at.% were synthesized using the conventional mixed-oxide method and carbonates. Microstructural analysis, performed using a scanning electron microscope, revealed rounded grains with relatively inhomogeneous sizes and distinct grain boundaries. X-ray diffraction confirmed that the materials exhibit a rhombohedral structure with an 3 space group at room temperature. Piezoelectric resonance measurements were conducted to determine the piezoelectric and elastic properties of the samples. The results indicated that a small amount of calcium doping significantly enhanced the piezoelectric coefficient d. The calcium-doped ceramics exhibited higher electrical permittivity across the entire temperature range compared to the pure material, as well as a significant value of remanent polarization. These findings indicate that the performance parameters of the base material have been significantly improved, making these ceramics promising candidates for various applications.
采用传统的混合氧化物法和碳酸盐合成了钙钛矿结构材料Pb0.75Ba0.251-xCax(Zr0.7Ti0.3)O3，其中x = 1%和2%。使用扫描电子显微镜进行微观结构分析，结果显示晶粒呈圆形，尺寸相对不均匀，晶界明显。X射线衍射证实，这些材料在室温下呈现具有R3空间群的菱面体结构。进行了压电共振测量以确定样品的压电和弹性性能。结果表明，少量钙掺杂显著提高了压电系数d。与纯材料相比，钙掺杂陶瓷在整个温度范围内表现出更高的介电常数以及显著的剩余极化值。这些发现表明，基础材料的性能参数得到了显著改善，使这些陶瓷成为各种应用的有前途的候选材料。
