二维磁性材料及多场调控研究进展

图 14  离子插层实验结果　(a), (b) Cr2Ge2Te6有机阳离子插层的实验结果[112], 其中(a) Cr2Ge2Te6和 (TBA) Cr2Ge2Te6晶体结构示意图; (b) 纯Cr2Ge2Te6和 (TBA) Cr2Ge2Te6在H // ab方向磁化强度随温度(左)及(TBA) Cr2Ge2Te6在H // ab方向磁化强度随磁场(右)的变化; (c), (d) Fe3GeTe2锂离子插层的实验结果[38], 其中(c) Fe3GeTe2器件结构示意图, 电解质(LiClO4溶解在聚氧乙烯中)覆盖Fe3GeTe2薄片和侧栅; (d) 3层Fe3GeTe2的居里温度随栅极电压的变化

Fig. 14.  Experimental results of ion intercalation. (a), (b) Results of the organic cation intercalation for Cr2Ge2Te6[112]: (a) Schematic diagrams of crystal structures of Cr2Ge2Te6 and (TBA) Cr2Ge2Te6; (b) temperature-dependent magnetization (M-T) of pristine Cr2Ge2Te6 and (TBA) Cr2Ge2Te6 for H//ab (left) and magnetic field-dependent magnetization (M-H) of (TBA) Cr2Ge2Te6 for H//ab (right). (c), (d) Results of the Li+ intercalation for Fe3GeTe2[38]: (c) Schematic of the Fe3GeTe2 device structure, the electrolyte (LiClO4 dissolved in polyethylene oxide) covers both Fe3GeTe2 flake and side gate; (d) Curie temperature of the tri-layer Fe3GeTe2 as a function of the gate voltage.