中文摘要：

以乙醇铌、乙酸钾和乙酸钠为原料,乙二醇甲醚为溶剂,采用溶胶-凝胶（Sol-Gel）阳极氧化铝（AAO）模板法制备了K0.5Na0.5NbO3（KNN）纳米管阵列.利用热分析确定晶化温度,采用X射线衍射、扫描电子显微镜和透射电子显微镜表征KNN纳米管的物相、形貌和微观结构.结果表明,KNN最佳的晶化温度为700℃;KNN纳米管阵列结晶性良好,为单斜钙钛矿多晶结构,单根纳米管的外径约为200nm,管壁厚约为20nm.对KNN纳米管阵列的铁电性能表征显示,其剩余极化率Pr约为1.86μC/cm^2,矫顽场Ec约为0.68kV/cm。

英文摘要：

K0.5Na0.5NbO3（KNN） nanotube arrays were synthesized by Sol-Gel processing with anodic aluminum oxide templates,using Nb（OC2H5）5,CH3COOK and CH3COONa as the starting materials and 2-methoxyethanol（2-MOE） as solution.The precursor gel was analyzed by thermogravimetric-differential thermal analysis.The phase,morphology and microstructure of KNN nanotube arrays were characterized by X-ray diffraction,scanning electron microscope（SEM） and transmission electron microscope（TEM）,respectively.The as-prepared samples are monoclinic phase perovskite structure with the outer-diameter of about 200 nm and wall thickness of about 20 nm.Polarization-electricfield（P-E） response curves of KNN nanotube arrays show that the remanent polarization（Pr） and the coercive electricfield（Ec） are about 1.86 μC/cm^2 and 0.68kV/cm,respectively.