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机构地区:[1]苏州科技学院电子与信息工程系,苏州215011 [2]西安交通大学电子材料研究所,西安710049
出 处:《功能材料与器件学报》2005年第3期318-322,共5页Journal of Functional Materials and Devices
基 金:国家重点基础研究发展计划(No.2002CB613304);江苏省自然科学基金(BK2005039)
摘 要:通过MOD法和快速热处理过程,在Si(100)和Pt(111)/Ti/SiO2/Si衬底上制备了LaN iO3(LNO)导电氧化物薄膜。经XRD结构分析表明,所制备的LNO薄膜具有纯的钙钛矿结构,并且以(100)方向择优取向。经SEM和AFM分析表明,LNO薄膜具有表面均匀、无裂纹。经标准四探针法测试表明,LNO薄膜具有好的金属特性,其室温电阻率为7.6×10-4Ω.cm。铁电性能测试表明,LNO薄膜可以提高PZT铁电薄膜的剩余极化强度。LaNiO3 thin films were deposited on Si (100) and Pt( 111 )/Ti/SiO2/Si substrates by modified metalorganic decomposition technique(MOD) and rapid thermal annealing method. The structures of the films were characterized by X-ray diffraction (XRD). XRD analysis show that the LaNiO3 thin films on Si (100) and Pt( 111 )/Ti/SiO2/Si substrates have single-phase perovskite-type structure and highly (100)-oriented. Scanning electron microscope (SEM) and atom force microscopy (AFM) images show the LaNiO3 films with uniform and crack-free surfaces. The resisitivity versus temperature curves of the LaNiO3 films show that the films have good metallic characteristic. The resistivity of the LaNiO3 films is 7.8×10^-4Ω . cm at room temperature. The hysteresis loops show that LNO thin films can increase the remnant polarization of PZT thin films.
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