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固溶体KTa1-xNbxO3陶瓷的热释电性质
PYROELECTRIC PROPERTIES OF SOLID-SOLUTION KTa1-xNbxO3 CERAMICS
【摘要】 本文首次报道KTN铁电陶瓷的热释电系数λ与温度的依赖关系。测量了极化强度P。结果表明,x=0.5和0.6的样品在25℃时,P=4.6μc/cm2和5.0μc/cm2;λ=2.0×10-8c/cm2K和1.7×10-8c/cm2K。并讨论了Nb含量对极化强度的影响。
【Abstract】 The temperature dependence of the pyroelectric coefficient (A) of potassium Niobate-Tantalate ferroelectric ceramics is reported for the frrst time in this paper. The remanent polarization (P)is measured. The ceramics (r=0. 5 and 0. 6) exhibit the remanent polarization P=4. 6x 10-6 coul/cm2 and 5. 0x 10-6coul/cm2t pyroelectric coefficient A=2 X 10-8coul/cm2K and 1. 7x 10-8 coul/cm2K at 25C- The effect of Niobium content (z) on the remanent polarization (P)is discussed.
【关键词】 钽铌酸钾;
热释电系数;
极化强度;
【Key words】 Potassium Niobate-Tantalate; Pyroelectric coefficient; Remanent polarization.;
【Key words】 Potassium Niobate-Tantalate; Pyroelectric coefficient; Remanent polarization.;
- 【文献出处】 湖北大学学报(自然科学版) ,Journal of Hubei University(Natural Science Edition) , 编辑部邮箱 ,1991年04期
- 【被引频次】2
- 【下载频次】32