Abstract
Response of Co/Nb multilayers to external field near the superconducting transition temperature ( T C) was studied. The average moment of Co was suppressed with decreasing Co thickness. At 10 K, for Co thickness larger than 0.5 nm, the multilayers showed hysteresis and ferromagnetism. Some samples showed anomalous field-cooled paramagnetic moments, similar to Paramagnetic Meissner Effect (PME). This is attributed not to the Co moment but to the suppressed surface T C causing PME.
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