Luo Xiong, Li Rubin, Ma Xiaoxuan, Chen Yunke, Kang Baojuan, Zhang Jincang, Ren Wei, Feng Zhenjie, Cao Shixun
Department of Physics, Materials Genome Institute, International Center for Quantum and Molecular Structures, Shanghai University, Shanghai 200444, People's Republic of China.
Shanghai Key Laboratory of High Temperature Superconductors, Shanghai University, Shanghai 200444, People's Republic of China.
J Phys Condens Matter. 2021 May 28;33(27). doi: 10.1088/1361-648X/abfd53.
We investigate the detailed analysis of the magnetic properties in a series of PrSmFeOsingle crystals from= 0 to 1 with an interval of 0.1. Doping controlled spin reorientation transition temperatureΓ(,,) to Γ(,,) covers a wide temperature range including room temperature. A 'butterfly'-shape type-I spin switching with 180° magnetization reversal occurs below and above the magnetization compensation points in= 0.4 to 0.8 compounds. Interestingly, in PrSmFeOsingle crystal, we find an inadequate spin reorientation transition accompanied by uncompleted type-I spin switching in the temperature region from 138 to 174 K. Furthermore, a type-II spin switching appears at 23 K, as evidenced from the magnetization curve in field-cooled-cooling (FCC) mode initially bifurcate from zero-field-cooled (ZFC) magnetization curve at 40 K and finally drops back to coincide the ZFC magnetization value at 23 K. Our current research reveals a strong and complex competition between Pr-Feand Sm-Feexchange interactions and more importantly renders a window to design spintronic device materials for future potential applications.
我们对一系列PrSmFeO单晶中磁性能进行了详细分析，其中 = 0至1，间隔为0.1。掺杂控制的自旋重取向转变温度Γ(,,)到Γ(,,)覆盖了包括室温在内的很宽温度范围。在 = 0.4至0.8的化合物中，在磁化补偿点以下和以上会出现具有180°磁化反转的“蝴蝶”形I型自旋切换。有趣的是，在PrSmFeO单晶中，我们发现在138至174 K的温度区域内，自旋重取向转变不充分，并伴有未完成的I型自旋切换现象。此外，在23 K时出现了II型自旋切换，这从场冷冷却（FCC）模式下的磁化曲线得到证明：该曲线最初于40 K时从零场冷却（ZFC）磁化曲线分叉，最终在23 K时回落至与ZFC磁化值重合处。我们目前的研究揭示了Pr-Fe和Sm-Fe交换相互作用之间强烈且复杂的竞争关系，更重要的是为未来潜在应用设计自旋电子器件材料提供了一个窗口。
