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基于溅射－气体－聚集（SGA）形成纳米金属颗粒的原理，提出了蒸发－气体－聚集（EGA）共沉积制备CO－Ag颗粒膜的新方法，并利用该方法制备了系列Co－Ag颗粒膜样品．TEM／ED分析表明，制备态样品中CO颗粒被Ag原子所包裹，能有效地阻止颗粒的表面氧化与团聚；＃膜无需经过热处理即可形成Co与Ag的相分离，其结构为fcc—Co和fcc-Ag非均匀相多晶共存形态；与Co大块材料相比，薄膜中Co颗粒晶格常数随颗粒大小变化而呈现出不同程度的收缩效应，当颗粒平均直径为8nm时，其晶格收缩量为7％．磁电阻测量结果表明，薄膜在室温下呈现出较大的巨磁电阻效应；随着薄膜中Co颗粒尺寸的减小，其巨磁电阻效应增强．
Based on the principle of sputtering-gas-aggregation (SGA) for the formation of nano-metal particles, a new method of vapor deposition-gas-aggregation (EGA) co-deposition of CO-Ag particles was proposed and a series of Co-Ag particles Film samples. TEM / ED analysis showed that the CO particles in the prepared samples were coated by Ag atoms, which could effectively prevent the surface oxidation and agglomeration of the particles. The film could form the phase separation of Co and Ag without heat treatment and the structure was fcc-Co And fcc-Ag heterogeneous phase polycrystalline coexistence morphology; compared with Co bulk materials, the lattice constant of Co particles in the film showed varying degrees of shrinkage effect with the particle size changes, when the average particle diameter of 8nm, the crystal Grid shrinkage of 7%. The magnetoresistance measurement results show that the film shows a large GMR effect at room temperature. With the decrease of Co particle size, the GMR effect is enhanced.