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R. DeSouza, J. Fleig, J. Maier:
"Electrical resistance of low-angle tilt grain boundaries in acceptor-doped SrTiO₃";
Journal of Applied Physics, 97 (2005), S. 0535021 - 0535027.

The transport of charge across symmetrical low-angle [001] tilt grain boundaries in Fe-doped SrTiO3 was examined. Grain boundary resistances were obtained from impedance spectroscopy measurements on bicrystals with misorientation angles θ = 2.3°, 5.4°, and 7.8° as a function of temperature and oxygen partial pressure. By comparing these data with values predicted from a double Schottky-barrier model, we show that the resistance of a low-angle tilt grain boundary in acceptor-doped SrTiO3 is correlated with its dislocation content, but in a nontrivial manner.

http://dx.doi.org/10.1063/1.1853495

http://aleph.ub.tuwien.ac.at/F?base=tuw01&func=find-c&ccl_term=AC05937283