Abstract:Certain Gd alloys, such as Gd-Y, are known to exhibit an apparent "double ferromagnetism" in which the c axis component orders on cooling from the paramagnetic phase ͑T C1 ͒, while the basal-plane component remains effectively paramagnetic. Subsequently the basal-plane component orders at a lower temperature ͑T C2 ͒. Our measurements of low-field ac susceptibility and magnetization for high-quality Gd and Gd-Y single crystals suggest that either the behavior originally used to identify ferro I, namely, the con… Show more
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