Title: The role of pressure-induced stacking faults on the magnetic properties of gadolinium Show Chinese title

Title: 压力诱导的层错在钆磁性特性中的作用

Abstract: Experimental data show that under pressure, Gd goes through a series of structural transitions hcp to Sm-type (close-packed rhombohedral) to dhcp that is accompanied by a gradual decrease of the Curie temperature and magnetization till the collapse of a finite magnetization close to the dhcp structure. We explore theoretically the pressure-induced changes of the magnetic properties, by describing these structural transitions as the formation of fcc stackings faults. Using this approach, we are able to describe correctly the variation of the Curie temperature with pressure, in contrast to a static structural model using the hcp structure. Show Chinese abstract

Abstract: 实验数据表明，在压力下，Gd经历一系列结构转变，从六方密堆结构（hcp）转变为Sm型（密堆菱形）结构，再到六方密堆（dhcp），伴随着居里温度和磁化强度的逐渐降低，直到接近dhcp结构时有限磁化的崩溃。 我们通过将这些结构转变描述为面心立方（fcc）堆垛层错的形成，理论探讨了压力引起的磁性性质的变化。 使用这种方法，我们能够正确描述居里温度随压力的变化，这与使用hcp结构的静态结构模型形成对比。