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首页> 外文会议>NATO Advanced Study Institute on Magnetic Storage Systems Beyond 2000, Jun 25-Jul 7, 2000, Rhodes, Greece >CoPt NANOPARTICLES FOR HIGH DENSITY MAGNETIC RECORDING MEDIA
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CoPt NANOPARTICLES FOR HIGH DENSITY MAGNETIC RECORDING MEDIA

机译：用于高密度磁记录介质的CoPt纳米粒子

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摘要

CoPt nanoparticles with the high anisotropy L1_0 ordered phase have been prepared and embedded in C and BN matrices by sputtering from Co_(50)Pt_(50) and matrix targets onto Si substrate using the tandem mode. The as-made films showed a disordered face-centered-cubic structure which is magnetically soft. Ordered CoPt particles were obtained by post-annealing the films at 700℃. Typical particle size obtained was in the range from a few nanometers to 20 nm, which was controlled by adjusting the bilayer thickness and annealing conditions. The microstructure of the granular films at the optimumally annealed state showed a uniform size distribution with an average particle size below 10 nm. The coercivity development in the films was investigated in conjunction with the growth and ordering of the particles.
机译：制备了具有高各向异性L1_0有序相的CoPt纳米颗粒，并通过串联模式将Co_（50）Pt_（50）和基质靶材溅射到Si衬底上，并将其嵌入C和BN矩阵中。制成的薄膜显示出无序的面心立方结构，该结构磁性软。通过在700℃下对膜进行后退火获得有序的CoPt颗粒。获得的典型粒径在几纳米至20nm的范围内，其通过调节双层厚度和退火条件来控制。处于最佳退火状态的颗粒状薄膜的微观结构显示出均匀的尺寸分布，平均粒径低于10 nm。结合颗粒的生长和有序性，研究了薄膜中矫顽力的发展。

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