论文标题
CD-MG-TB 1/1近似值中的结构 - 转变驱动的抗铁磁对自旋玻璃过渡
Structural-transition-driven antiferromagnetic to spin-glass transition in Cd-Mg-Tb 1/1 approximants
论文作者
论文摘要
详细研究了一系列CD85-XMGXTB15（x = 5，10，15，20）合金中1/1近似值对二十面体准晶体的磁敏感性。通过增加Mg注意到抗磁磁到自旋玻璃样过渡的发生。透射电子显微镜分析证明了磁性过渡与单斜晶级排序相对于t> 100 k的CD4四面体方向的抑制。该现象的可能起源进行了详细讨论。抗铁磁对自旋玻璃磁性的磁性转变的发生与化学障碍的组合有关，因为CD与MG和CD4 Tetrahedra的定向疾病随机取代。
The magnetic susceptibility of the 1/1 approximants to icosahedral quasicrystals in a series of Cd85-xMgxTb15 (x = 5, 10, 15, 20) alloys was investigated in detail. The occurrence of antiferromagnetic to spin-glass-like transition was noticed by increasing Mg. Transmission electron microscopy analysis evidenced a correlation between the magnetic transition and suppression of the monoclinic superlattice ordering with respect to the orientation of the Cd4 tetrahedron at T > 100 K. The possible origins of this phenomenon were discussed in detail. The occurrence of the antiferromagnetic to spin-glass -like magnetic transition is associated with the combination of chemical disorder due to a randomized substitution of Cd with Mg and the orientational disorder of the Cd4 tetrahedra.
