【摘要】 研究了用磁控溅射方法制备的纳米结构Ｓｍ ２２Ｃｏ７８ 单层膜、Ｓｍ２２Ｃｏ７８／Ｆｅ６５Ｃｏ３５ 双层膜及Ｓｍ２２Ｃｏ７８／Ｆｅ６５Ｃｏ３５／Ｓｍ ２２Ｃｏ７８ 三层膜的磁性，特别是双层膜及三层膜系统中的Ｆｅ６５Ｃｏ３５ 软磁层厚度ｄ 对薄膜剩磁比（ Ｍｒ／ Ｍｓ） 和矫顽力（ Ｈｃ） 的影响．所有样品的磁滞回线测量表明，该系列薄膜的易磁化轴在膜面内．磁滞回线的单一硬磁相特征，说明Ｓｍ Ｃｏ 硬磁层与ＦｅＣｏ 软磁层之间的交换相互作用使两相很好地复合在一起．在双层膜和三层膜中，Ｍｒ／ Ｍｓ 随软磁层厚度ｄ的增加单调上升，而矫顽力随ｄ 的变化出现一峰值．通过研究ΔＭ 随磁场Ｈ 的变化，发现随着软、硬磁相界面数的增加，ΔＭ 曲线的正峰数量逐渐减少；负峰数量逐渐增强，负峰的半高宽逐渐减少．更多还原

【Abstract】 The dependence of reduced remanence ( M r/ M s) and coercivity of Sm\-\{22\}Co\-\{78\}/Fe\-\{65\}Co\-\{35\} bilayer and Sm\-\{22\}Co\-\{78\}/Fe\-\{65\}Co\-\{35\}/Sm\-\{22\}Co\-\{78\} triple\|layer films on Fe\-\{65\}Co\-\{35\} soft\|magnetic layer thickness d ,was systematically investigated.All the hysteresis loops of the films exhibited a single\|phase behavior,reflecting a strong exchange coupling between soft\| and hard\|magnetic phase. M r/ M s showed a monotonic increase with increasing Fe\-\{65\}Co\-\{35\} thickness d ,and the coercivity would show a peak with increasing d .From the plot of Δ M versus applied field H ,it is shown that the positive profile decreases and the negative interaction profile increases with the increase of interfaces between soft\| and hard\|layers.更多还原