磁性材料体系中的自旋结构是通过不同的交换耦合效应之间的竞争产生的,在压力条件中通过原子间距变化导致电子结构变化和压磁效应BME(baromagnetic effect)导致自旋结构演变,这种BME效应有望应用于传感器件领域。有鉴于此,中科院物理所胡凤霞、王建涛、王晶、Lunhua He、Baogen Shen等报道了反铁磁材料Fe掺杂Mn0.87Fe0.13NiGe中由于高压晶格应变导致形成一种新型自旋结构CyS-AFMb。通过原位静态压力和磁场条件中进行中子粉末衍射(NPD)表征,揭示了自旋结构与其变化情况。
参考文献
Feiran Shen, Houbo Zhou, Fengxia Hu*, Jian-Tao Wang*, Hui Wu, Qingzhen Huang, Jiazheng Hao, Zibing Yu, Yihong Gao, Yuan Lin, Yangxin Wang, Cheng Zhang, Zhuo Yin, Jing Wang*, Sihao Deng, Jie Chen, Lunhua He*, Tianjiao Liang, Ji-Rong Sun, Tongyun Zhao, and Baogen Shen*, A Distinct Spin Structure and Giant Baromagnetic Effect in MnNiGe Compounds with Fe-Doping, J. Am. Chem. Soc. 2021
DOI: 10.1021/jacs.1c02694
https://pubs.acs.org/doi/10.1021/jacs.1c02694