Magnetic-frozen states in Eu/Mn superlattices

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Abstract
Eu/Yb and Mn/Yb superlattices, in which the Yb is a nonmagnetic element, were fabricated by a molecular beam method in order to provide further insight into the magnetic properties of Eu/Mn superlattices. The magnetic susceptibility and magnetisation measurements made on the experimentally prepared superlattices indicated that the unique magnetic behaviour of Eu/Mn superlattices, as typified by the magnetic-frozen state and undirectional anisotropy, was associated with the amorphous Eu interlayer interaction and interfacial interaction between the amorphous Eu and amorphous Mn layers.