【摘要】 本文采用溶胶-凝胶法制备Ba_xSr_1-xZr_0.18Ti_0.82O₃（x=0.3,0.4,0.5）陶瓷粉末,通过传统的陶瓷制备方法制备陶瓷样品,研究了不同Ba/Sr比对陶瓷结构及充放电性能的影响。研究结果显示,随着Ba/Sr的增加,陶瓷的介电常数变大,居里温度向高温方向移动,介电性由线性向非线性演变;室温下,Ba_0.5Sr_0.5Zr_0.18Ti_0.82O₃陶瓷有最大的介电常数（²250,0.004,1 k Hz）,最大的饱和极化（¹0.8μC/cm²,110 k V/cm）,最大的能量密度（⁰.42 J/cm³,110 k V/cm）,其放电效率也达到93%。更多还原

【Abstract】 Ba_xSr_1-xZr_0.18Ti_0.82O₃（ x = 0.3,0.4,0.5） powders were prepared by modified sol-gel method,and the BSZT ceramics were fabricated by traditional technology.The effect of Ba / Sr ratio on the structure and dielectric properties of BSZT ceramics were discussed.The results indicated that with the increase of Ba / Sr ratio,the dielectric constant increased and the curie temperature moved to higher point,simulaneously,the linear dielectric properties transformed to be nonlinear.The Ba_0.5Sr_0.5Zr_0.18Ti_0.82O₃ ceramics obtained the highest dielectric constant（ 2250,0.004,1 k Hz）,polarization（ 10.8 μC / cm²,110 k V/cm）,discharge energy density（ ⁰.42 J/cm³,110 k V/cm）,and the discharge efficiency were 93%.更多还原