Anomalous training effect in exchange-biased MnPd/Co bilayers
Exchange bias has been studied for a series of MnPd/Co bilayers sputtered onto Si(100) by an RF sputter-deposition system. The double-shifted loops with an anomalous training effect have been observed. The manifestation of doubleshifted loops is interpreted as the coexistence of positive exchange bias and negative exchange bias, which is in agreement with the temperature dependence and the observed anomalous training effect. © 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.