Strain dependence of dissociative adsorption of H2O on epitaxially strained, out-of-plane polarized, BaTiO3(001) thin films

The strain dependence of the apparent activation energy of desorption of H2O on epitaxial, TiO2-terminated, out-of-plane polarized, BaTiO3(100) thin films has been investigated using X-ray diffraction, X-ray photoelectron spectroscopy and temperature-programmed desorption. The apparent activation energy of desorption increases significantly with the in-plane strain, suggesting that the strain-induced ferroelectric distortion determines the strength of the chemical bond between the dissociatively adsorbed water and the surface.

Automated summary

The study found that the out-of-plane polarized surface of epitaxial, TiO2-terminated, BaTiO3(100) thin films affects the desorption reaction of H2O. As the in-plane strain increases, the apparent activation energy of desorption significantly increases, indicating that the strain-induced ferroelectric distortion affects the strength of the chemical bond.