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Ferro I phase and gadolinium

机译:一号铁相和g

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摘要

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 concave-upward growth of the a axis moment in the approach on cooling to T_(SR) is not necessarily an indicator of the phase, or that ferro I is also present in pure Gd. Of the several models that exist to describe ferro I, the results from this study favor the random-cone model.
机译:已知某些Gd合金(例如Gd-Y)表现出明显的“双铁磁性”,其中c轴成分从顺磁性相(T_(C1))冷却降序,而基面成分有效地保持顺磁性。随后,基面分量在较低的温度(T_(C2))下排序。我们对高质量Gd和Gd-Y单晶的低场磁化率和磁化强度的测量表明,要么是最初用于识别铁I的行为,要么是在冷却方法中a轴矩的凹向上生长T_(SR)的值不一定表示相,或者铁I也存在于纯Gd中。在描述铁I的几种模型中,这项研究的结果偏向于随机锥模型。

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