Tunable exchange bias effects in perovskite YFe(0.5)Cr(0.5)O(3)

Exchange bias (EB) effects in YFe(0.5)Cr(0.5)O(3), which exhibits magnetization reversal, were systemically investigated. Above the compensation temperature (T(comp)), only negative EB field appears, whereas the sign of the EB field below T(comp) can be reversed from positive to negative by applying a large cooling field. The difference between the EB behaviors above and below T(comp), which are strictly related to magnetization reversal, may originate from the competing magnetic anisotropy of the system. The sign reversal of both magnetization and EB field coexisting in a single system can be tuned in a preselected and convenient way. (C) 2011 Elsevier Ltd. All rights reserved.