Structure and magnetic properties of FePt nanograins embedded in amorphous carbon films

Yuhua Lee, J. H. Chen, M. S. Guo, G. M. Liu, Chin-Shan Lue

Research output: Contribution to journalConference article

5 Citations (Scopus)

Abstract

Amorphous carbon films with nanograin inclusions of FePt alloy were manufactured by a DC magnetron co-sputtering technique. All films show superparamagnetism. After the post-deposition annealing, the blocking temperature and, thus, the coercive field are largely increased. The coercivity increases from ∼1.7kOe of the as-deposited films to ∼5.6kOe of the films annealed at 400°C for 1h. We discuss the effect of annealing on the structure and the increase of coercivity.

Original languageEnglish
Pages (from-to)15-18
Number of pages4
JournalJournal of Magnetism and Magnetic Materials
Volume282
Issue number1-3
DOIs
Publication statusPublished - 2004 Nov 1
EventInternational Symposium on Advanced Magnetic Technologies - Taipei, Taiwan
Duration: 2003 Nov 132003 Nov 16

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Carbon films
Amorphous carbon
Amorphous films
Magnetic properties
magnetic properties
Coercive force
carbon
Superparamagnetism
Annealing
coercivity
annealing
Sputtering
sputtering
direct current
inclusions
Temperature
temperature

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Lee, Yuhua ; Chen, J. H. ; Guo, M. S. ; Liu, G. M. ; Lue, Chin-Shan. / Structure and magnetic properties of FePt nanograins embedded in amorphous carbon films. In: Journal of Magnetism and Magnetic Materials. 2004 ; Vol. 282, No. 1-3. pp. 15-18.
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Structure and magnetic properties of FePt nanograins embedded in amorphous carbon films. / Lee, Yuhua; Chen, J. H.; Guo, M. S.; Liu, G. M.; Lue, Chin-Shan.

In: Journal of Magnetism and Magnetic Materials, Vol. 282, No. 1-3, 01.11.2004, p. 15-18.

Research output: Contribution to journalConference article

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T1 - Structure and magnetic properties of FePt nanograins embedded in amorphous carbon films

AU - Lee, Yuhua

AU - Chen, J. H.

AU - Guo, M. S.

AU - Liu, G. M.

AU - Lue, Chin-Shan

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N2 - Amorphous carbon films with nanograin inclusions of FePt alloy were manufactured by a DC magnetron co-sputtering technique. All films show superparamagnetism. After the post-deposition annealing, the blocking temperature and, thus, the coercive field are largely increased. The coercivity increases from ∼1.7kOe of the as-deposited films to ∼5.6kOe of the films annealed at 400°C for 1h. We discuss the effect of annealing on the structure and the increase of coercivity.

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