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采用sol-gel法在P型Si(111)衬底上制备了Pb0.85Nd0.1TiO3(PNT) 薄膜.用X射线衍射技术研究了退火温度对薄膜结构和结晶性的影响.同时还研究了薄膜的介电、铁电和绝缘性能.结果发现在600℃下退火1h的PNT薄膜呈钙钛矿结构;在0~5V范围内,薄膜的漏电流密度小于1.00×10-5A/cm2;在±5V的偏压范围内,C-V记忆窗口宽度为2V;在零电压下,时间保持长达105~106s; 在室温100kHz下,其介电常数为31.60,介电损耗为0.12.

参考文献

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[3] Okada M;Takai S;Amemiya M;Tominaga K .Preparation of c-axis-oriented PbTiO3 Thin Films by MOCVD under Reduced Pressure[J].Japanese Journal of Applied Physics,1989,28(06):1030-1034.
[4] Takashi Mihara;Hitoshi Watanabe .Electronic Conduction Characteristcs of Sol-gel Ferroelectric Pb(Zr0.4Ti0.6)O3 Thin Film[J].Japanese Journal of Applied Physics,1995(34):5664-5673.
[5] JIIN JYH SHYU;Kom Lin Mo .Preparation and Properties of Sol-gel Derived La-doped PbTiO3 Thin Films[J].Japanese Journal of Applied Physics,1995,34(10):5683-5688.
[6] Kurchania R.;Milne SJ. .Synthesis of (Pb,La) (Zr,Ti)O-3 films using a diol based sol gel route[J].Journal of Materials Science,1998(3):659-667.
[7] Tang XG.;Zhou QF.;Zhang JX.;Guo HK. .Preparation of (Pb, Cd, La)TiO3 phase pure powders and thin films by sol-gel processing[J].Journal of Materials Science Letters,1998(15):1277-1279.
[8] 程建功 .PbTiO<,3>铁电薄膜的Sol-Gel法制备及其性质研究[D].山东大学,1997.
[9] 于军,董晓敏,赵建洪.MF(I)S结构设计对硅基铁电薄膜系统C-V特性的影响[J].无机材料学报,1999(04):613.
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