Anomalous thickness-dependent exchange bias effect in Fe3O4/YMnO3 multiferroic heterostructuresDongxing Zheng, Mingyu Sun, Dong Li, Peng Li, Chao Jin and Haili BaiEPL, 110 2 (2015) 27005DOI: https://doi.org/10.1209/0295-5075/110/27005