Controlling the preferred orientation in granular CoCrPt:C thin films for high-areal density magnetic recording

Y. Xu, J. P. Wang, C. K. Pock, X. Cheng, Z. S. Shan, T. C. Chong

Research output: Contribution to journalConference articlepeer-review

7 Scopus citations

Abstract

Magnetic and structural properties of hcp-(CoCrPt):C granular thin films for potential applications in high areal density recording media have been investigated. CrX (X=1, Ru, Mn) underlayer with and without NiAl seedlayer has been applied to improve the in-plane preferred orientation of Co alloy grains. Addition of Ru or Mn to the Cr uuderlayer promotes Co (11.0) in-plane orientation; using a NiAl seedlayer promotes Co (10.0). For films with CrMn underlayer and NiAl seedlayer, Hc reaches 3460 Oe and Mrt decreases to 0.34 memu/cm2. Thermal stability and reversal properties have been studied by moment-decay measurements. These granular films possess good in-plane preferred orientation of the magnetic moment and c-axis, which is desirable for high areal density longitudinal recording.

Original languageEnglish (US)
Pages (from-to)1491-1493
Number of pages3
JournalIEEE Transactions on Magnetics
Volume37
Issue number4 I
DOIs
StatePublished - Jul 1 2001
Event8th Joint Magnetism and Magnetic Materials -International Magnetic Conference- (MMM-Intermag) - San Antonio, TX, United States
Duration: Jan 7 2001Jan 11 2001

Keywords

  • CrX underlayer
  • Granular thin film
  • NiAl seedlayer
  • Preferred orientation

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