Deterioration of exchange bias in CoO-Co bilayers by the roughness of the ZnO substratesD. Stamopoulos, M. Zeibekis, E. Manios, N. Boukos and D. NiarchosEPJ Web of Conferences, 75 (2014) 05011DOI: https://doi.org/10.1051/epjconf/20147505011