Role of substrate bias on the magnetic properties and microstructure of CoCrPt: SiO2 perpendicular recording media

被引：0
|
作者：
Piramanayagam, S.N. [1 ]
Mah, C.S. [1 ]
Ong, C.Y. [1 ]
Shi, J.Z. [1 ]
Dumaya, Jo Alvin [2 ]
Onoue, T. [2 ]
Ishibashi, S. [2 ]
机构：
[1] Data Storage Institute, DSI Building, 5, Engineering Drive 1, Singapore 117608, Singapore
[2] Hoya Magnetics Singapore, 3, Tuas Link 2, Singapore 638552, Singapore
来源：
Journal of Applied Physics | 2007年 / 101卷 / 10期
关键词：
The role of substrate bias during the sputter deposition of various layers of double-layered CoCrPt- SiO2 perpendicular recording media has been investigated in order to understand the physical mechanisms behind the various effects observed. Perpendicular recording media with dual Ru intermediate layers were investigated using several magnetic and microstructural characterization techniques. It was observed that; in general; the application of a bias voltage during the deposition of the seedlayer (Ta) and the first intermediate layer (Ru) is helpful in reducing the c -axis dispersion of the recording layer. For the other layers; application of bias voltage leads to deterioration in the magnetic properties. It was also observed that the application of a bias voltage during the deposition of the first intermediate layer (especially Ru) may not enhance the preferred growth of Ru hexagonal-close-packed (00.2) planes parallel to the disk surface; as predicted before. However; the bias voltage on the Ru layer still reduces the c -axis dispersion of the magnetic layer. From the omega-offset x-ray diffraction investigations; it is estimated that the lattice parameter a of the Ru layer is reduced slightly with bias voltage; which could probably lead to a reduction in the lattice mismatch between the Ru layer and Co-alloy layer. Bias conditions also could lead to improved interface condition. Such an improvement in the lattice matching or interface conditions could probably be the cause of the reduction of c -axis dispersion of the recording layer. © 2007 American Institute of Physics;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Journal article (JA)
引用
下载
收藏
相关论文
共 50 条
  • [31] Effect of RuCoCr-oxide intermediate layers on the growth, microstructure, and recording performance of CoCrPt-SiO2 perpendicular recording media
    Srinivasan, Kumar
    Piramanayagam, S. N.
    Kay, Yew Seng
    JOURNAL OF APPLIED PHYSICS, 2010, 107 (03)
  • [32] High anisotropy CoCrPt(B) media for perpendicular magnetic recording
    Lu, B
    Weller, D
    Sunder, A
    Ju, GP
    Wu, XW
    Brockie, R
    Nolan, T
    Brucker, C
    Ranjan, R
    JOURNAL OF APPLIED PHYSICS, 2003, 93 (10) : 6751 - 6753
  • [33] Magnetic and Recording Characteristics of CoCrPt-Oxide Media With a Mixture of SiO2 and TiO2
    Tamai, Ichiro
    Araki, Ryoko
    Tanahashi, Kiwamu
    IEEE TRANSACTIONS ON MAGNETICS, 2008, 44 (11) : 3492 - 3495
  • [34] Magnetic and microstructural properties of CoCrPt:: Oxide perpendicular recording media with novel intermediate layers
    Piramanayagam, S. N.
    Shi, J. Z.
    Zhao, H. B.
    Pock, C. K.
    Mah, C. S.
    Ong, C. Y.
    Zhao, J. M.
    Zhang, J.
    Kay, Y. S.
    Lu, L.
    IEEE TRANSACTIONS ON MAGNETICS, 2007, 43 (02) : 633 - 638
  • [35] Magnetic interactions in CoCrPt-oxide based perpendicular magnetic recording media
    Varghese, H. K. Tan B.
    Piramanayagam, S. N.
    JOURNAL OF APPLIED PHYSICS, 2014, 116 (16)
  • [36] Enhanced heteroepitaxial growth of CoCrPt-SiO2 perpendicular magnetic recording media on optimized Ru intermediate layers
    Srinivasan, Kumar
    Piramanayagam, S.N.
    Journal of Applied Physics, 2008, 103 (02):
  • [37] Local Compositional Analysis of Magnetic Crystal Grain and Boundary in CoCrPt-SiO2 Granular Perpendicular Recording Media
    Futamoto, Masaaki
    Handa, Takahiro
    Takahashi, Yoshio
    INTERNATIONAL CONFERENCE ON MAGNETISM (ICM 2009), 2010, 200
  • [38] Magnetic interactions in CoCrPt-oxide based perpendicular magnetic recording media
    Piramanayagam, S.N., 1600, American Institute of Physics Inc. (116):
  • [39] Enhanced heteroepitaxial growth of CoCrPt-SiO2 perpendicular magnetic recording media on optimized Ru intermediate layers
    Srinivasan, Kumar
    Piramanayagam, S. N.
    JOURNAL OF APPLIED PHYSICS, 2008, 103 (02)
  • [40] Influence of Ru/Ru-SiO2 underlayers on the microstructure and magnetic properties of CoPt-SiO2 perpendicular recording media
    Tang, Rujun
    Ho, Pin
    Lim, Boon Chow
    THIN SOLID FILMS, 2010, 518 (20) : 5813 - 5819
12345