We report on the magnetic and structural properties of La2Ni(Ni1/3Sb2/3)O6 in polycrystal, single crystal and thin film samples. We found that this material is a ferrimagnet (Tc ~ 100 K) which possesses a very distinctive and uncommon feature in its virgin curve of the hysteresis loops. We observe that bellow 20 K it lies outside the hysteresis cycle, and this feature was found to be an indication of a microscopically irreversible process possibly involving the interplay of competing antiferromagnetic interactions that hinder the initial movement of domain walls. This initial magnetic state is overcome by applying a temperature dependent characteristic field. Above this field, an isothermal magnetic demagnetization of the samples yield a ground state different from the initial thermally demagnetized one.
Origin and tailoring of the antiferromagnetic domain structure in $α$-Fe$_2$O$_3$ thin films unraveled by statistical analysis of dichroic spectro-microscopy (X-PEEM) images
用统计图象分析法确定了反铁磁$α$ O $_3$外延层的磁结构和畴壁分布.使用二向色光谱显微镜图像，我们表明，域结构是统计不变的厚度和反铁磁畴结构的薄膜是继承自亚铁磁性前体层之一，即使在完全转变成反铁磁$α$ -Fe $_2$ O $_3$。我们表明，修改前体层的磁畴结构是一种真正的方式来调整反铁磁层的磁畴结构和畴壁。
Strain Tuning of Orbital-Driven Giant Magnetoresistance in van der Waals ferrimagnet Mn$_3$Si$_2$Te$_6$
Institute for Solid State Physics, The University of Tokyo（东京大学固体离子体研究所）；The University of Tokyo（东京大学）；Department of Physics and Astronomy, The University of Manchester（曼彻斯特大学物理与天文学系）；The University of Manchester（曼彻斯特大学）；Department of Physics, Institute of Science Tokyo（东京科学大学物理系）；Institute of Science Tokyo（东京科学大学）
Tailoring Magnetic Anisotropy in Cr$_2$Ge$_2$Te$_6$ by Electrostatic Gating
铁磁半导体磁性的电控制为未来处理和存储信息的自旋电子器件提供了令人兴奋的前景。本文报道了层状铁磁半导体Cr $_2$ Ge $_2$ Te $_6$（CGT）薄晶体中电调制磁相变和磁各向异性的观测结果。我们发现，重电子掺杂（$\sim$ $10^{14}$ cm $^{-2}$）CGT的双电层晶体管器件中的磁阻（MR），铁磁性的一个明确的签名，在温度高达200 K以上，这是显着高于已知的居里温度为61 K的未掺杂材料表现出滞后。此外，角度相关的MR测量结果表明，这种新的基态的磁易轴位于层平面内形成鲜明对比的情况下，未掺杂的CGT，其易轴点在平面外的方向。我们建议，显着的掺杂促进自由载流子介导的双交换机制，优于绝缘状态下的超交换机制。我们的研究结果强调，这类材料的静电门不仅允许电荷流切换，但也磁相位切换，证明其潜在的自旋电子学应用。
Probing the magnetic ground state and magnetoelastic coupling in double perovskite ruthenate: Ca2ScRuO6
Indian Institute of Technology Palakkad（印度理工学院帕拉克卡德分校）；Bhabha Atomic Research Centre（巴哈原子研究中心）；Homi Bhabha National Institute（霍米·巴巴国立研究所）；Indian Institute of Technology Kharagpur（印度理工学院卡拉格普尔分校）；UGC-DAE Consortium for Scientific Research（UGC-DAE科学研究联盟）
