Abstract
Spin-glasslike (SGL) behavior and exchange bias (EB) effect have been reported in multiferroic Bi1/3Sr2/3FeO3 ceramics. Temperature dependence of magnetization and high field relaxation properties reveal the existence of SGL phases. After field cooling the sample from 350 to 10 K, exchange bias field (HEB), vertical magnetization shifts (MShift) and increment of saturation magnetization (MS) are observed, and exhibit a strong dependence on the strength of cooling fields. Furthermore, HEB shows a linear dependence on MShift. This observed EB effect is discussed in terms of the exchange coupling between ferromagnetic clusters and the SGL phases at interface.
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