Magnesium deficient Li-doped MgO nanostructures were fabricated by hydrothermal method to investigate their structural, electronic, and magnetic properties. X-ray diffraction study confirms the single-phase crystallinity and changing the Li concentration (2%, 4% & 6%) in the host matrix of MgO induced strain and increased the crystallite size. Field-effect scanning electron microscopy images show the change in morphology from flakes to prismatic type nanostructures with the variation in Li content. The increase in Mg defects with an increase in Li doping, elucidated by X-ray photoelectron spectroscopy, would be the plausible reason for origin of d0 ferromagnetism and can be explained through (Li¹⁺–V_Mg–Li¹⁺) exchange interaction mechanism. Also, this increase in Mg defects leads to an increase in the value of saturation magnetization and grain size as well. Furthermore, electron paramagnetic resonance measurements explored the concepts of g-value and line width which are related with Mg defects and super exchange interaction of paramagnetic ions.

通过水热法制备了缺镁的 Li 掺杂 MgO 纳米结构，以研究其结构、电子和磁性能。X 射线衍射研究证实了单相结晶度并改变了 MgO 诱导应变的宿主基质中的锂浓度（2%、4% 和 6%）并增加了微晶尺寸。场效应扫描电子显微镜图像显示了随着锂含量的变化，形态从薄片到棱柱型纳米结构的变化。X 射线光电子能谱阐明，随着 Li 掺杂的增加，Mg 缺陷的增加可能是 d0 铁磁性起源的合理原因，可以通过 (Li ¹⁺ –V _Mg –Li ¹⁺) 交流互动机制。此外，Mg 缺陷的这种增加也会导致饱和磁化强度和晶粒尺寸的增加。此外，电子顺磁共振测量探索了与镁缺陷和顺磁离子超交换相互作用相关的 g 值和线宽的概念。