Formation and perpendicular magnetic coupling of a1 and l10 copt in copt/tin films on glass substrate

Hongyu An, Kazuya Ando, Yoshio Nakamura, Ji Shi

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

We have studied the structure and the magnetic properties of CoPt films by using TiN spacer layer deposited on a glass substrate. We show that after annealing at 700 °C, a highly (001)-textured L10 CoPt structure has been successfully obtained. However, by increasing the annealing temperature to 800 °C, two magnetic phases A1 CoPt and L10 CoPt are formed despite of the better crystallinity of CoPt than that annealed at 700 °C. By measuring the minor magnetic hysteresis loops of the samples after applying a field cooling in a range from room temperature to 500 °C, we have further studied the magnetic coupling between A1 and L10 CoPt phases in the out-of-plane direction of the films. Our work may provide a piece of information for other studies on the heat-assisted magnetic recording.

Original languageEnglish
Article number8440674
JournalIEEE Transactions on Magnetics
Volume55
Issue number2
DOIs
Publication statusPublished - 2019 Feb

Keywords

  • Heat-assisted magnetic recording (hamr)
  • L1 Copt
  • Perpendicular magnetic anisotropy (pma)
  • Tin

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

Fingerprint

Dive into the research topics of 'Formation and perpendicular magnetic coupling of a1 and l1<sub>0</sub> copt in copt/tin films on glass substrate'. Together they form a unique fingerprint.

Cite this