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在LaNiO_3衬底上(Pb,La)TiO_3铁电薄膜的制备和研究

Preparation and study on(Pb,La)TiO_3 ferroelectric thin films on LaNiO_3/Si substrates
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摘要 首先通过金属有机化合物热分解(MOD)法在Si(100)基片上制备出LaNiO3(LNO)薄膜,再通过溶胶-凝胶(sol-gel)法,在LNO/Si(100)衬底上制备出(PbxLa1-x)TiO3(PLT)铁电薄膜。经XRD分析表明,LNO薄膜具有(100)择优取向的类钙钛矿结构,PLT/LNO/Si薄膜具有四方相钙钛矿结构,同时以(100)择优取向。最后对薄膜的介电性和铁电性进行了测试,发现薄膜介电常数适中,铁电性良好。 LaNiO3(LNO) thin films were prepared on Si(100) wafer by metalorganic decomposition(MOD) method.Then,(PbxLa1-x)TiO3(PLT) ferroelectric thin films were prepared on LaNiO3/Si substrates by Sol-gel method.XRD analysis showed that LaNiO3 thin films on Si(100) substrates possess single-phase perovskite-type structure and highly(100)-oriented,PLT thin films on LNO/Si(100) substrates possess tetragonal perovskite-type structure and highly(100)-oriented.Finally,the dielectric and ferroelectric properties of PLT thin films have been tested,which shows the dielectric constant was moderate and the remanent polarization was larger.
出处 《苏州科技学院学报(工程技术版)》 CAS 2012年第1期56-59,共4页 Journal of Suzhou University of Science and Technology (Engineering and Technology)
基金 江苏省自然科学基金项目(BK2005039)
关键词 LaNiO3薄膜 镧钛酸铅 铁电性质 LaNiO3 thin films (PbxLa1-x)TiO3 ferroelectricity
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