论文标题
元素ND磁结构的纳米调制
Nanometric modulations of the magnetic structure of the element Nd
论文作者
论文摘要
可以说，稀土霓虹灯表现出最复杂的磁性顺序和一系列元素的磁相变。在这里，我们报告了小角度中子散射（SAN）测量的结果，这是温度和磁场的函数，以研究ND中纳米长度尺度上的磁相关性。 SAN的测量结果揭示了表征有序的自旋构型的先前未报告调制向量的存在，这些旋转构型表现出相关的幅度和方向变化。在5.9和7.6 K之间，附加调制向量的幅度$ q $ =0.12Å$^{ - 1} $，主要是由于ND层的顺序构成的，该层包含一个倒置中心。在相图的这个区域中，SANS测量值还确定了$ \ $ 1 t的相位边界。这些调制向量的一个重要特征是，它们表明存在纳米长的长度尺度旋转纹理，而沮丧的Ruderman-kittel-Kasuya-Yosida（Rkky）（Rkky）（rkky）相互作用，而不是dzyaloshinskiyya（dm-moriyya）稳定下来，这些纹理可能稳定下来。
The rare earth neodymium arguably exhibits the most complex magnetic ordering and series of magnetic phase transitions of the elements. Here we report the results of small-angle neutron scattering (SANS) measurements as a function of temperature and applied magnetic field to study magnetic correlations on nanometer length scales in Nd. The SANS measurements reveal the presence of previously unreported modulation vectors characterizing the ordered spin configuration which exhibit changes in magnitude and direction that are phase dependent. Between 5.9 and 7.6 K the additional modulation vector has a magnitude $Q$ =0.12 Å$^{-1}$ and is primarily due to order of the Nd layers which contain a center of inversion. In this region of the phase diagram, the SANS measurements also identify a phase boundary at $\approx$1 T. An important feature of these modulation vectors is that they indicate the presence of nanometer length scale spin textures which are likely stabilized by frustrated Ruderman-Kittel-Kasuya-Yosida (RKKY) interactions rather than a Dzyaloshinskii-Moriya (DM) exchange interaction.
