Magnetic properties of Dy-Y superlattice structures☆
Magnetic properties of Dy-Y superlattice structures☆
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Dy-Y超晶格结构的磁性能☆
DOI：
10.1016/0304-8853(86)90246-5
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发表时间：
1986
期刊：
影响因子：
--
通讯作者：
C. P. Flynn
中科院分区：
文献类型：
--
作者：
S. Sinha;J. Cunningham;R. Du;M. Salamon;C. P. Flynn
分子束外延已经被用来生产交替的镝和钇层的单晶超晶格，其厚度与Dy的内禀磁性周期性相当。超晶格的体磁化强度表现出与Dy的螺旋相变相对应的特征，但没有铁磁相变。相反，零场冷却的数据显示了一个广泛的最大值，没有观察到现场冷却。最大值的位置取决于钇层的厚度。这些结果进行了讨论的中断的螺旋由非磁性层。
Molecular beam epitaxy has been used to produce single-crystal superlattices of alternating dysprosium and yttrium layers with thicknesses comparable to the intrinsic magnetic periodicity of Dy. The superlattices exhibit a feature in the bulk magnetization corresponding to the spiral-phase transition in Dy, but no ferromagnetic transition. Rather, zero-field-cooled data show a broad maximum that is not observed on field cooling. The position of the maximum depends on yttrium layer thickness. These results are discussed in terms of an interruption of the spiral by the non-magnetic layers.