利索-全球专利检索

  1. 登录
  2. 注册
发明申请
US20120315505A1 PERPENDICULAR MAGNETIC RECORDING DISK WITH MULTIPLE MAGNETIC LAYERS AND INTERMEDIATE DUAL NUCLEATION FILMS FOR CONTROL OF GRAIN SIZE 有权
具有多个磁性层的全磁性记录磁盘和用于控制颗粒尺寸的中间双核芯片

PERPENDICULAR MAGNETIC RECORDING DISK WITH MULTIPLE MAGNETIC LAYERS AND INTERMEDIATE DUAL NUCLEATION FILMS FOR CONTROL OF GRAIN SIZE
摘要：
A perpendicular magnetic recording disk has a graded-anisotropy recording layer (RL) formed of at least two ferromagnetically exchange coupled CoPtCr-oxide magnetic layers (MAG1 and MAG2) with two nucleation films (NF1 and NF2) between the magnetic layers. NF1 is a metal film, preferably Ru or a Ru-based alloy like RuCr, sputter deposited on MAG1 at low pressure to a thickness between about 0.1-1.5 nm. NF2 is a metal oxide film, preferably an oxide of Ta, sputter deposited on NF1 at high pressure to a thickness between about 0.2-1.0 nm. MAG2 is sputter deposited over NF2. NF1 and NF2 provide a significant reduction in average grain size in the RL from a graded-anisotropy RL without nucleation films between MAG1 and MAG2, while also assuring that MAG1 and MAG2 are strongly exchange coupled.
摘要（中）：

垂直磁记录盘具有由至少两个铁磁交换的CoPtCr-氧化物磁性层（MAG1和MAG2）与磁性层之间的两个成核膜（NF1和NF2）形成的渐变各向异性记录层（RL）。 NF1是金属膜，优选Ru或Ru基Ru合金，在低压下溅射沉积在MAG1上，厚度在约0.1-1.5nm之间。 NF2是金属氧化物膜，优选Ta的氧化物，在高压下溅射沉积在NF1上，厚度在约0.2-1.0nm之间。 MAG2溅射沉积在NF2上。 NF1和NF2从MAG1和MAG2之间没有成核膜的梯度各向异性RL提供RL中的平均晶粒尺寸的显着降低，同时还确保MAG1和MAG2强烈交换耦合。

公开/授权文献
信息查询
Global Dossier Espacenet
0/0