| Pb过量对以Ti-Al为阻挡层的硅基铁电电容器极化翻转性能的影响 |
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| 引用本文： | 刘卓佳,刘保亭,彭增伟,代秀红,闫会芳,付跃举,赵庆勋.Pb过量对以Ti-Al为阻挡层的硅基铁电电容器极化翻转性能的影响[J].人工晶体学报,2011,40(6):1552-1556. |
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| 作者姓名： | 刘卓佳 刘保亭 彭增伟 代秀红 闫会芳 付跃举 赵庆勋 |
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| 作者单位： | 河北大学物理科学与技术学院,保定,071002 |
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| 基金项目： | 国家自然科学基金(60876055,11074063)资助项目; 河北省应用基础研究计划重点项目(10963525D); 高等学校博士点基金(20091301110002) |
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| 摘 要： | 以射频磁控溅射法生长的La0.5Sr0.5CoO3( LSCO)为电极,采用溶胶-凝胶法在以Ti-Al为导电阻挡层的Si基片上生长了用不同Pb过量前驱体溶液(溶胶)制备的LSCO/Pb( Zro4Ti0.6)O3(PZT)/LSCO电容器,以此构造了Pt/LSCO/PZT/LSCO/Ti-Al/Si异质结.Pb过量对LSCO/PZT/LSCO电容器极化翻转性能的影响表明:不同Pb过量溶胶对电容器的极化翻转性能影响很大,其中Pb过量15;的溶胶制备的样品在550℃常规退火1h后相对具有较好的翻转性能.在5V的外加电场下,LSCO/PZT/LSCO电容器的矫顽电压和剩余极化强度分别为1.25V和24.6μC/cm2.疲劳和电阻率测试分析表明:在经过109翻转后,不同样品的抗疲劳性能均很好,而电阻率随前驱体溶液Pb过量的增加呈现下降的趋势.
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| 关 键 词： | Pb过量 铁电电容器 PZT 极化翻转 溶胶-凝胶 |
Effect of Lead Excess on Polarization Switching Properties of Si-based Ferroelectric Capacitor with Ti-Al Barrier Layer |
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| LIU Zhuo-jia
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LIU Bao-ting
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PENG Zeng-wei
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DAI Xiu-hong
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YAN Hui-fang
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FU Yue-ju
,
ZHAO Qing-xun.Effect of Lead Excess on Polarization Switching Properties of Si-based Ferroelectric Capacitor with Ti-Al Barrier Layer[J].Journal of Synthetic Crystals,2011,40(6):1552-1556. |
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| Authors: | LIU Zhuo-jia LIU Bao-ting PENG Zeng-wei DAI Xiu-hong YAN Hui-fang FU Yue-ju ZHAO Qing-xun |
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| Institution: | LIU Zhuo-jia,LIU Bao-ting,PENG Zeng-wei,DAI Xiu-hong,YAN Hui-fang,FU Yue-ju,ZHAO Qing-xun (College of Physics Science and Technology,Hebei University,Baoding 071002,China) |
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| Abstract: | Pt/La0.5Sr0.5CoO3(LSCO)/Pb(Zr0.4Ti0.6)O3(PZT)/LSCO/Ti-Al/Si heterostructure has been fabricated,in which the sputtered LSCO films were used as the electrodes of the LSCO/PZT/LSCO capacitor,PZT films were prepared by sol-gel technique using different excess lead,and using Ti-Al as a conducting barrier layer.The effect of lead excess on the swithching properties of the LSCO/PZT/LSCO capacitor has been investigated.The results indicated that lead excess has great impact on the switching properties of the capac... |
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| Keywords: | lead excess ferroelectric capacitor PZT polarization flip sol-gel |
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