%0 Journal Article %K Thin films %K Pulsed laser deposition %K Electrodes %K Epitaxial growth %K Ferroelectricity %K Semiconducting bismuth compounds %K Leakage currents %K Asymmetric structure %K Ionization energies %K Poole-Frenkel emission %A G.W Pabst %A L.W Martin %A Y.-H Chu %A Ramamoorthy Ramesh %B Applied Physics Letters %D 2007 %G eng %R 10.1063/1.2535663 %T Leakage mechanisms in BiFe O3 thin films %V 90