论文标题
CD-MG-RE（re = gd，tb，dy，ho，ho，er和tm）系统中二十面体准晶体及其立方近似值的磁性特性
Magnetic properties of icosahedral quasicrystals and their cubic approximants in the Cd-Mg-RE (RE = Gd, Tb, Dy, Ho, Er, and Tm) systems
论文作者
论文摘要
已经进行了一项系统的研究，以阐明稀土（RE）类型和局部原子构型对IcosaheDral Quasicrystal（IQC）（IQC）及其立方近似值（2/1和1/1 ACS）在Ternary CD-MG-RE中的影响（RE = GD，TB，TB，TB，dy，ho，ho，ho，er，以及TM）。在低温下，IQC和2/1 ACS在RE = GD，TB，DY和HO中表现出类似于旋转的Glass-glass，而ER和TM系统不会表现出冻结的行为降低至2K。1/1ACS表现出类似于Spin-Glass的固定式冻结或抗fromagnetic（AFM）的订购，依赖于其组成量的MG依赖于其组成的MG。 TF值显示出从IQC到2/1和1/1 ACS的趋势增加。相比之下，IQC的Weiss温度的绝对值大于2/1和1/1 AC中的ACS中的绝对值，这表明相邻的旋转之间的AFM总相互作用在高度旋转（而不是周期性系统）中更大。起源于远程Ruderman-Kitel-Kasuya-Yoshida机制的竞争自旋相互作用以及CD/MG离子的化学障碍可能是CD-MG-RE IQC和ACS中观察到的类似旋转玻璃的行为。
A systematic investigation has been performed to elucidate effects of Rare-Earth (RE) type and local atomic configuration on magnetic properties of icosahedral quasicrystal (iQC) and their cubic approximants (2/1 and 1/1 ACs) in the ternary Cd-Mg-RE (RE = Gd, Tb, Dy, Ho, Er, and Tm) systems. At low temperatures, iQC and 2/1 ACs exhibit spin-glass-like freezing for RE = Gd, Tb, Dy, and Ho, while Er and Tm systems do not show freezing behaviour down to the base temperature ~ 2 K. The 1/1 ACs exhibit either spin-glass-like freezing or antiferromagnetic (AFM) ordering depending on their constituent Mg content. The Tf values show increasing trend from iQC to 2/1 and 1/1 ACs. In contrast, the absolute values of Weiss temperature for iQCs are larger than those in 2/1 and 1/1 ACs, indicating that the total AFM interactions between the neighboring spins are larger in aperiodic, rather than periodic systems. Competing spin interactions originating from the long-range Ruderman-Kittel-Kasuya-Yoshida mechanism along with chemical disorder of Cd/Mg ions presumably account for the observed spin-glass-like behavior in Cd-Mg-RE iQCs and ACs.
