Zunping Xu, Xiaoyang Chen, Jianguo Zhu, D. Xiao, P. Yu
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引用次数: 1
Abstract
Mn/Y co-doped Ba0.67Sr0.33TiO3 (Mn+Y: BST) thin films were deposited on LaNiO3 (LNO)/SiO2/Si substrates by radio frequency (RF) magnetron sputtering at substrate temperature of 400 °C. Influence of the annealing temperature on microstructure and electrical properties of the Mn+Y: BST films was investigated. X-ray diffraction (XRD) and scanning electron microscopy (SEM) investigations revealed that all the films have dense and crack-free surface with a perovskite structure. The Mn+Y: BST films annealed at 700 °C showed the best electrical properties, with a dielectric constant of 875, dielectric loss of 0.032, tunability of 60% at room temperature and 100 kHz, and the leakage current density of 6.7×10-5 A/cm2 at an electric field of 400 kV/cm, respectively.
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