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)氧化铝(AAO)模板法制备K0.5Na0.5NbO3(KNN)纳米管阵列,并采用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.研究表明,在700℃退火处理可获得结晶性较好,具有单斜钙钛矿结构的KNN多晶纳米管阵列.单根纳米管的外径约为200 nm,管壁厚约为20 nm.采用压电力显微镜(PFM)对单根KNN纳米管的压电性能进行表征,结果显示所制备的KNN纳米管具有明显的压电性能.
K0.5Na0.5NbO3（KNN） nanotube arrays were synthesized by sol-gel proccessing with anodic aluminum oxide（AAO） templates,using Nb（OC2H5）5,CH3COOK and CH3COONa as the starting materials and 2-methoxyethanol（2-MOE） as solution.The phase,morphology and microstructure of KNN nanotube arrays were characterized by X-ray diffraction,scanning electron microscopy and transmission eletron microscopy.The as-prepared samples were monoclinic phase perovskite structure with the outer-diameter of about 200 nm and wall thickness of about 20 nm.The piezoelectric characteristic of individual KNN nanotube was demonstrated by piezoresponse force microscopy（PFM）.It could be clearly seen that the KNN nanotubes exhibited a significant piezoelectric response and illustrated their ferroelectric behavior.
出处
《湖北大学学报（自然科学版）》
CAS
北大核心
2010年第3期290-293,共4页
Journal of Hubei University：Natural Science
基金
国家自然科学基金(50872031
50902046)
湖北省基金(2009CDB085)资助
