首页>
外国专利>
Magnetic media with ferromagnetic overlay materials for improved thermal stability
Magnetic media with ferromagnetic overlay materials for improved thermal stability
展开▼
机译:具有铁磁覆盖材料的磁性介质,可提高热稳定性
展开▼
页面导航
摘要
著录项
相似文献
摘要
A magnetic recording disk has a magnetic recording layer that includes a ferromagnetic host layer and a ferromagnetic overlay deposited directly on the host layer with an effective overlay thickness in the range of 1-40 Angstroms. The ferromagnetic material used in the overlay contains Co, Fe and/or Ni and has a magnetic moment significantly greater than that of the material in the ferromagnetic host layer. The ferromagnetic overlays improve the thermal stability of superparamagnetic grains contained within the host layers by magnetically coupling the grains through bridging. The enhanced thermal stability of the media allows for the use of thinner ferromagnetic host layers, and leads to lower remanent magnetization-thickness product (Mrt) values and higher recording densities.
展开▼
机译:磁记录盘具有磁记录层,该磁记录层包括铁磁基质层和直接沉积在基质层上的铁磁覆盖层,有效覆盖层厚度为1-40埃。覆盖层中使用的铁磁材料包含Co,Fe和/或Ni,其磁矩明显大于铁磁主体层中材料的磁矩。铁磁覆盖层通过桥接使晶粒磁耦合,从而改善了包含在主体层中的超顺磁性晶粒的热稳定性。介质的增强的热稳定性允许使用更薄的铁磁主体层,并导致较低的剩余磁化厚度积(M r Sub> t)值和较高的记录密度。
展开▼