自然科学研究

烧结温度对氧化锰掺杂的铪钛酸钡钙陶瓷压电性能的影响

张正辉 (伊犁师范大学物理科学与技术学院 新疆凝聚态相变与微结构实验室), 周恒为 (伊犁师范大学物理科学与技术学院 新疆凝聚态相变与微结构实验室), 尹红梅 (新疆大学 物理科学与技术学院)

摘要


采用传统固相反应方法在1320℃～1520℃的烧结温度（Ts）下得到了Ba0.85Ca0.15Hf0.1Ti0.9O3+0.06 mol%MnO2陶瓷，研究了Ts对陶瓷晶体结构、表面形貌、介电、室温铁电与压电的性能，发现：室温下陶瓷均为钙钛矿型铁电体，相结构为菱形-正交相共存；不同Ts获得的陶瓷居里温度变化不大，值在97～103℃的范围；陶瓷压电系数随Ts增大而增大，Ts=1520℃时，压电系数最大，陶瓷表面晶界较为清晰，晶粒尺寸最大，值分别为384 pC/N和13.49μm，此时室温介电常数1862，介电损耗为0.037，剩余极化强度（Pr）为6.88μC/cm2。

关键词


烧结温度；氧化锰掺杂；铪钛酸钡钙陶瓷；压电性能

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DOI: https://doi.org/10.33142/nsr.v2i1.15906

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