High quality $Ta_2O_5$ thin films have been obtained from the anodization of deposited tantalum (Ta). The as-deposited amorphous films of 750 $\AA$ thickness have excellent electrical properties. These properties include refractive indices 2.1~2.2 die...
High quality $Ta_2O_5$ thin films have been obtained from the anodization of deposited tantalum (Ta). The as-deposited amorphous films of 750 $\AA$ thickness have excellent electrical properties. These properties include refractive indices 2.1~2.2 dielectric constants ~25, and leakage currents $10^{-8}$ /A$\textrm{cm}^{-2}$ at 1 MV$\textrm{cm}^{-1}$. We fabricated a MIM element with the $Ta_2O_5$ films. They have perfect current-voltage symmetry characteristics. A high performance MIM device was formed by newly developed processes based on our unique anodization and annealing treatment. The effects of various processing conditions (top-electrode metals, annealing conditions) on the MIM device performances will be extensively discussed throughout this work.