Magnetic and dielectric studies on the room temperature magnet SrRu2O6 and its doped variants

最近发现的反铁磁体SrRu_2 O_6是具有准二维结构和长程磁有序的4d过渡金属氧化物的一个新例子。其异常高的磁有序温度约为560 K，使其成为一个有前途的模型系统，研究自旋和电荷的相互作用，在相关的电子系统与高自旋轨道耦合。该项目团队将以纯净和掺杂形式合成这种材料，并研究其磁性和介电特性。项目合作伙伴主要要求提供旅行支助，以便将双方的互补活动联系起来。特别是，合作伙伴将利用传统和微波辅助水热合成来生产材料。除了纯SrRu 2 O 6之外，将在AB 2 O 6结构中进行A位和B位掺杂，其中B例如是3d V 5+或5d Ir 5+离子，A例如是Ca ~（2+）、Ba ~（2+）、Mg ~（2+）、Zn ~（2+）。所有材料都将通过X射线衍射、化学分析和磁性研究进行彻底表征。为了了解自旋、电荷和结构的相互作用，印度团队将应用介电谱和非线性介电和磁化率测量。第一步将通过液体剥离来实现设备。德国团队将通过使用高频电子自旋共振光谱学和μ子自旋旋转研究来增加关于静态和动态磁性的信息。因此，该项目将产生一个新的分层4d材料与应用的潜在相关性的全面了解。

The recently discovered antiferromagnet SrRu2O6 is a new example of a 4d-transition metal oxide with quasi-2D structure and long range magnetic order. Its unusually high magnetic ordering temperature of about 560 K makes it a promising model system for studying the interplay of spin and charge in a correlated electron system with high spin-orbit coupling. The project team will synthesize this material in pure and doped form and study its magnetic and dielectric properties. The project partners ask essentially for travel support which will allow linking the complementary activities at both sides. In particular, the partners will utilize both conventional and microwave-assisted hydrothermal synthesis for producing the materials. In addition to pure SrRu2O6, A-site and B-site doping in the AB2O6 structure will be performed, with B for example being the 3d V5+ or the 5d Ir5+ ions and A being, e.g., Ca2+, Ba2+, Mg2+, Zn2+. All materials will be thoroughly characterized by x-ray diffraction, chemical analysis, and magnetic studies. In order to understand the interplay of spin, charge, and structure, the Indian team will apply dielectric spectroscopy and nonlinear dielectric and magnetic susceptibility measurements. A first step towards devices will be done by liquid exfoliation. The German team will add information on the static and dynamic magnetic properties by using high-frequency Electron-Spin-Resonance-Spectroscopy and Muon-Spin-Rotation studies. The project will hence yield a comprehensive understanding of a new layered 4d material with potential relevance for application.