Effect of pyrolysis temperature on Bi4Ti3O12/MgO(100) structures prepared by chemical solution deposition

Effect of pyrolysis temperature on Bi4Ti3O12/MgO(100) structures prepared by chemical solution deposition

Epitaxially grown Bi4Ti3O12 thin films on MgO(100) substrates were prepared by a chemical solution deposition process using metal naphthenates as the starting materials. A homogeneous Bi-Ti solution with toluene was spin-coated onto the substrates and pyrolyzed at 300 oC, 400 oC and 500 oC for 10 minutes in air. Final annealing was performed at 750 oC for 30 minutes in air. The effects of pyrolysis temperature on the crystallinity, epitaxy and surface morphology of the films were investigated. Highly c-axis oriented Bi4Ti3O12 thin films were confirmed by X-ray diffraction θ-2θ scans. According to the pole-figure analysis, epitaxy of the annealed films was found to depend on the pyrolysis temperature.

Epitaxially grown Bi4Ti3O12 thin films on MgO(100) substrates were prepared by a chemical solution deposition process using metal naphthenates as the starting materials. A homogeneous Bi-Ti solution with toluene was spin-coated onto the substrates and pyrolyzed at 300 oC, 400 oC and 500 oC for 10 minutes in air. Final annealing was performed at 750 oC for 30 minutes in air. The effects of pyrolysis temperature on the crystallinity, epitaxy and surface morphology of the films were investigated. Highly c-axis oriented Bi4Ti3O12 thin films were confirmed by X-ray diffraction θ-2θ scans. According to the pole-figure analysis, epitaxy of the annealed films was found to depend on the pyrolysis temperature.