标题： 纳米尺度层状SmFe0.5Co0.5O3钙钛矿中的低温磁介电耦合 显示英文标题

标题： Low temperature Magneto-dielectric coupling in nanoscale layered SmFe0.5Co0.5O3 perovskite

摘要： 在本研究中，我们根据磁性和介电测量确定了基于正铁氧体SmFe0.5Co0.5O3的纳米尺度层状混合Fe-Co层的不同物理特性。磁化分析显示，该系统是反铁磁性的，在约310 K附近有磁性转变，并在约192 K和22 K处有两个自旋重新取向转变。在此相中，由于磁性自旋的倾斜，不对称交换相互作用引起了弱铁磁性，类似于Ln-Fe-Co系统。 重要的是，这种纳米尺度层状钙钛矿还表现出约2.5%（100 K）的正磁介电效应，且该温度两侧的值均下降。我们从阳离子之间的磁相互作用以及低温范围内的自旋-晶格相互作用的角度分析了磁性和介电耦合存在的条件。 显示英文摘要

摘要： In this study, we determined the different physical characteristics of nanoscale layered mixed Fe-Co layers of orthoferrite SmFe0.5Co0.5O3 based on magnetic and dielectric measurements.Magnetization analyzes showed that the system was antiferromagnetic with a magnetic transition around 310 K and two spin-reorientation transitions at around 192 K and 22 K.In this phase, the antisymmetric exchange interaction induced weak ferromagnetism due to canting of the magnetic spins in a similar manner to the Ln-Fe-Co system. Importantly, this nanoscale layered perovskite also exhibited a positive magneto-dielectric effect of around 2.5 % (100 K) and the value decreased on both sides of this temperature.We analyzed the conditions related to the existence of magnetic and dielectric coupling in terms of the magnetic interactions between the cations as well as the spin-lattice interactions in the low temperature range.