Aspects of the magnetic structure of TmCu<sub>2</sub>
作者:M Heidelmann、B Lebech、Z Smetana、M Loewenhaupt
DOI:10.1088/0953-8984/4/45/012
日期:1992.11.9
diffraction, of the temperature dependence of the complex magnetic behaviour of TmCu2 in its ordered states. The samples were mainly powdered, but some aspects have also been tested by single-crystal measurements. TmCu2 shows at least three different antiferromagnetic structures in its ordered state. Within these phases, the magneticstructures show a strong ferromagnetic coupling of the moments of next-neighbour
已经使用中子衍射研究了 TmCu2 在其有序状态下的复杂磁行为的温度依赖性。样品主要是粉末状的,但某些方面也通过单晶测量进行了测试。TmCu2 在有序状态下显示出至少三种不同的反铁磁结构。在这些相中,磁性结构显示出 b 方向上相邻 Tm 原子矩的强铁磁耦合。低温结构 (AFI) 由传播矢量 (2 pi /8)a* 的前两个奇次谐波组成,其中最强的磁场强度由三次谐波引起。第一个相变发生在接近 3.1 K。这里发展的相是两种结构 (AFII) 的混合物。