Abstract
Iron-doped BaTiO3 epitaxial thin films have been fabricated using thepulsed laser deposition technique. The target was an Fe/BaTiO3two-material physical assembly. The films were grown on MgO (100)substrates at 650°C. The crystalline property of the films wasstudied by x-ray diffraction. The result indicated that the Fe-dopedBaTiO3 films did not degrade their crystallinity at the dopantconcentration of 4 mol%. The nonlinear optical properties of the filmswere determined using the z-scan method at the wavelength of 532 nm witha laser duration of 10 ns. The real and imaginary parts of thethird-order nonlinear susceptibility χ(3) were determined to be3.67×10-7 esu and 4.82×10-8 esu, respectively.
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