Magnetism of Eu-doped GaN modulations by spinodal nanodecomposition
Magnetism of Eu-doped GaN modulations by spinodal nanodecomposition
复制标题
DOI：
10.1103/physrevb.98.214426
复制
发表时间：
2018-12
影响因子：
3.7
通讯作者：
A. Masago;H. Shinya;T. Fukushima;Kazunori Sato;H. Katayama‐Yoshida
中科院分区：
文献类型：
--
作者：
A. Masago;H. Shinya;T. Fukushima;Kazunori Sato;H. Katayama‐Yoshida
采用Monte Carlo方法研究了Eu掺杂GaN的磁性质，研究了由纳米尺度的调幅分解引起的内部纳米结构，这些纳米结构是自发形成的或阿尔蒂形成的.在本模拟中，滞后和非滞后磁化曲线中观察到的系统中的大尺寸和小尺寸的纳米结构，分别。这些纳米结构也影响阻断温度。此外，它们在温度依赖性的自旋翻转能垒中，因此，模拟表明磁化强度是热稳定的。然而，我们观察到阻塞温度小于实验值，这可能是由于
By the Monte Carlo method, magnetic properties have been investigated for Eu-doped GaN involving internal nanostructures induced by nanoscale spinodal decomposition, where these nanostructures are spontaneously or artificially formed. In the present simulations, hysteretic and nonhysteretic magnetization curves are observed in the systems with the large-sized and small-sized nanostructures, respectively. These nanostructures affect the blocking temperatures as well. Furthermore, they influence temperature-dependent energy barriers of spin flipping; therefore, the simulations suggest that the magnetization is thermally stable. However, we observe that the blocking temperatures are smaller than the experimental values, which may be due to