Investigation of anisotropic and dynamic magnetic properties of Heusler compounds and double perovskites by means of torque detected electron spin resonance

半金属铁磁体在自旋电子学领域有着广泛的应用前景。Heusler化合物和双钙钛矿的两个家族都包含绝大多数已知或预测的具有高居里温度和相当大的磁矩的半金属。与这些材料在自旋电子学中的应用相关的非常重要的性质是磁晶各向异性和磁吉尔伯特阻尼。因此，本课题的主要目的是利用高场磁矩检测电子自旋共振技术研究Heusler化合物（Co_2FeSi，Co_2FeAl_（0.5）Si_（0.5），Mn_3Ga）和双钙钛矿（Sr_2FeMoO_6，Sr_2NiWO_6）的磁晶各向异性和吉尔伯特阻尼。结合所获得的结果与知识的结构排序收到的核磁共振测量，这是在IFW德累斯顿，将使我们能够得出结论的结构和组成特性的影响，对动态和静态的磁性研究化合物。因此，我的项目将提供一个反馈的设计新材料的形式，单晶，器件，薄膜与优化性能的应用在自旋电子学。

Half-metallic ferromagnets are very promising candidates for spintronic applications. Both families of Heusler compounds and double perovskites contain the vast majority of either known or predicted half-metals with high Curie temperatures and with rather large magnetic moments. Very important properties relevant for the application of these materials in spintronics are magneto-crystalline anisotropy and magnetic Gilbert damping. Therefore, the main goal of the present project is the investigation of magneto-crystalline anisotropy and Gilbert damping of the Heusler compounds (Co2FeSi, Co2FeAl0.5Si0.5, Mn3Ga) and double perovskites (Sr2FeMoO6, Sr2NiWO6) by means of high field magnetic torque detected electron spin resonance technique. The combination of the obtained results with the knowledge about the structural ordering received from the nuclear magnetic resonance measurements, which are performed in IFW Dresden, will enable us to conclude on the influence of structural and compositional properties on the dynamic and static magnetic properties of studied compounds. Therefore my project will provide a feedback for the design of new materials in the form of single crystals, devices, thin films with optimized properties for the application in spintronics.