Magnetic properties of L10 ordered FePt films prepared on a Fe-Si-B-Nb-Cu soft magnetic underlayer

Ichiro Fujii, Toshiyuki Shima, Koki Takanashi

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

(001)-oriented FePt films with large perpendicular magnetic anisotropy have been obtained on a soft magnetic underlayer (SUL). A nanocrystalline Fe-Si-B-Nb-Cu alloy film has been chosen as SUL, showing the coercivity H c of less than 80 A/m after annealing at 400°C. It has been found that the crystal orientation and magnetic properties of FePt films are improved by the introduction of a MgO interlayer between FePt and Fe-Si-B-Nb-Cu. The strong (001) texture and the large coercivity of 565 kA/m have been obtained in the tri-layer structure of Fe-Si-B-Nb-Cu (200nm)/MgO (5 nm)/FePt (10nm).

Original languageEnglish
Pages (from-to)47-51
Number of pages5
JournalMaterials Transactions
Volume47
Issue number1
DOIs
Publication statusPublished - 2006 Jan 1

Keywords

  • Iron platinum thin film
  • L1 ordered structure
  • Soft magnetic underlayer
  • Sputtering

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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