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改性锆钛酸铅反铁电陶瓷的热致伸缩 被引量:1

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摘要 研究了Pb_0.99Nb_0.02[(Zr_1-xSn_x)_1-yTi_y]_0.98O_3体系反铁电/铁电准同型相界附近典型化合物的热致伸缩性质.实验结果显示热致伸缩是由于温度诱导相变引起的,伸缩量的大小和方向与相变类型有以下关系:在反铁电正交相向四方相转变、铁电低温菱方相向高温菱方相转变和反铁电相向铁电或顺电相转变时晶体体积膨胀,铁电向反铁电或顺电转变时体积收缩.其中反铁电与铁电之间转变引起的应变伸缩量最大,高温铁电向低温反铁电相转变时线应变量dL/L_0和应变速率(dL/L_0)/dT分别可以达到2.8×10^(-3)和7.5×10^(-4)K^(-1).
出处 《科学通报》 EI CAS CSCD 北大核心 2002年第8期575-579,共5页 Chinese Science Bulletin
基金 国防科技预研基金资助项目(批准号:98J12.1.9)
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参考文献8

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同被引文献11

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