用磁控溅射法在单晶MgO(100)基片上制备了[FePt2nm/Agdnm]10多层膜,经真空热处理后,得到具有高矫顽力的垂直取向L10-FePt/Ag颗粒膜.x射线衍射结果表明,在250℃的热基片上溅射,当Ag层厚度d=3—11nm时,FePt颗粒具有很好的[001]取向,随着Ag层厚度的增加,FePt颗粒尺寸减小.[FePt2nm/Ag9nm]10经过600℃真空热处理15min后,颗粒大小仅约8nm,垂直矫顽力达到692kA/m.这种无磁耦合作用的颗粒膜,适合用作超高密度的垂直磁记录介质. The [FePt2nm / Agdnm] 10 multilayers were prepared on single-crystal MgO (100) substrates by magnetron sputtering. After vacuum heat treatment, a vertically oriented L10-FePt / Ag granular film with high coercivity was obtained. The results of X-ray diffraction showed that the FePt particles had a good [001] orientation when sputtered on a 250 ℃ hot substrate and the size of the FePt particles decreased as the Ag layer thickness d = 3-11 nm . [FePt2nm / Ag9nm] 10 After heat treatment at 600 ℃ for 15min, the particle size is only about 8nm and the vertical coercive force is 692kA / m. This magnetic particle-free coupling is suitable for ultra-high density perpendicular magnetic recording medium.