The optical properties of spinel Mn1.56Co0.96Ni 0.48O4 thin films have been investigated by spectroscopic ellipsometry in the temperature range from 20 to 260 °C. By fitting the measured ellipsometric parameter data with a three-layer model by Tauc-Lorentz oscillator dispersion formula, the refractive index and extinction coefficient of the thin films are determined in the spectral range of 280-850 nm. The refractive index decreases in the short-wavelength region but increases in the long-wavelength region with increasing temperature. The extinction coefficient increases with increasing temperature in all visible region.
Chinese Acad Sci, Key Lab Funct Mat & Devices Special Environm, Xinjiang Key Lab Elect Informat Mat & Devices, Xinjiang Tech Inst Phys & Chem, Urumqi 830011, Peoples R China;Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Ma, Chao,Wang, Hong Guang,Zhao, Peng Jun,et al. Temperature dependence of Mn1.56Co0.96Ni0.48O4 thin films optical properties by spectroscopic ellipsometry[J]. Materials Letters,2014,136(12):225-228.