【摘要】 用共蒸发的方法制备了六角多晶结构的CdMnS薄膜,研究了薄膜的铁电性和铁磁性。2%Mn浓度的样品的剩余极化强度Pr为1.72μC/cm2,矫顽场强Ec为14.3kV/cm。Au掺杂的CdMnS样品的居里点超过了300K。在10K低温磁滞回线中,得到的剩余磁化强度和磁矫顽力分别为1.39×10-6emu和75.4G;用磁力显微镜清楚地观察到从几个纳米到一百纳米大小不等的磁性团簇,还发现掺杂元素的浓度对其磁性具有明显影响。更多还原

【Abstract】 CdMnS films were prepared by and co-evaporation,and their properties were studied. The results showed CdMnS are hexagonal structure and possesses ferroelectric properties. A remnant polarization of 1.72 μC/cm2 and coercive field of 14.3 kV/cm. The co-evaporated CdMnS samples become ferromagnetic when doped with Au,with a spontaneous magnetization of 1.39×10-6 emu and a coercive magnetic field of 75.4 gauss at 10 K,and the Curie point was higher than room temperature. Using magnetic force microscopy,we observed clear magnetic clusters with sizes ranging from a few nanometers to 100 nm,and found the magnetization to be highly dependent on Au concentration.更多还原