FePt-Ag nanocomposite thin films with longitudinal magnetic anisotropy

Y. Z. Zhou, J. S. Chen, G. M. Chow, Jianping Wang

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

A well-controlled method to fabricate FePt thin films with the (200) texture and longitudinal magnetic anisotropy for high-density magnetic recording media is reported. FePt-Ag nanocomposite thin films with L1 0 ordered FePt grains embedded in an Ag matrix were deposited on the Cr 90 Ru 10 / glass by co-sputtering from Ag and FePt targets. The Ag doping suppressed the (001) texture but improved the L1 0 FePt (200) texture. The magnetic easy axis of FePt-Ag thin films changed from perpendicular to longitudinal in direction. In-plane coercivity of the films varied from 0.8 kOe to 6.5 kOe, depending on Ag contents in the films and under-layer thickness. The change from the (001) to (200) texture could be due to the competition of grain-boundary energy and epitaxial-strain energy.

Original languageEnglish (US)
Pages (from-to)704-707
Number of pages4
JournalJournal of Nanoscience and Nanotechnology
Volume4
Issue number7
DOIs
StatePublished - Sep 1 2004

Keywords

  • Fept-ag Nanocomposite
  • Magnetic Anisotropy
  • Magnetic Properties
  • XRD

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