%0 Journal Article
%T Orientation-dependent work function of in situ annealed strontium titanate
%A L F Zagonel
%A M B£żurer
%A A Bailly
%A O Renault
%A M Hoffmann
%A S-J Shih
%A D Cockayne and N Barrett
%J Journal of Physics: Condensed Matter
%P 31401-31401
%D 2009
%R 10.1088/0953-8984/21/31/314013
%X We have used energy-filtered x-ray photoelectron emission microscopy (XPEEM) and synchrotron radiation to measure the grain orientation dependence of the work function of a sintered niobium-doped strontium titanate ceramic. A significant spread in work function values is found. Grain orientation and surface reducing/oxidizing conditions are the main factors in determining the work function. Energy-filtered XPEEM looks ideally suited for analysis of other technologically interesting polycrystalline samples.
%K photoelectron spectroscopy
%K XPEEM
%K STO
%K work function
%K grain orientation
%U http://iopscience.iop.org/0953-8984/21/31/314013/