Dielectric and Electrical Properties of Li-doped ZnO Films

摘要：

Li-doped ZnO films were prepared on Pt/TiO2/SiO2/Si substrates by using RF magnetron sputtering. The films were crystallized at temperatures above 400 ℃, which was confirmed by X-ray diffraction. The shapes of the grains changed from seed-like to rectangular as the annealing temperature was increased from 400 ℃ to 700 ℃. The temperature dependence of the dielectric constant yielded a dielectric anomaly at 310 ℃. The ferroelectric polarization was measured using a polarization-electric field hysteresis loop. The leakage current density of the ZnO:Li films also displayed typical current-voltage characteristics, and the conduction mechanism was investigated for an applied electric field.

关键词： Dielectric Li-doped ZnO Ferroelectric Conductivity Film

作者: Jin Soo Kim Hai Joon Lee Hae Jin Seog Ill Won Kim

作者单位: Department of Physics, University of Ulsan, Ulsan 680-749, Korea

会议类型: 国际会议

会议名称: The 19th Symposium on Dielectric and Advanced Matter Physics & The 11th Workshop on High Dielectric and Ferroelectric Device and Materials(第19届介质及先进凝聚态物理研讨会暨第11届高介电及铁电设备材料研讨会)

会议地点: 首尔

会议语种:英文

页码: 640-644

在线出版日期: 2010-02-07（万方平台首次上网日期，不代表论文的发表时间）