Magnetoresistance of FePt nanograins embedded in carbon matrix

Y. H. Lee, M. S. Guo, C. S. Wur, P. C. Lin, W. H. Li

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

We studied the magneotransport properties of granular films of FePt/C which were fabricated by using DC magnetron co-sputtering technique. Films were made at the sputtering pressures of 30 and 15 mTorr, and with sputtering powers of 80 and 60 W for each pressure. A large magnetoresistance of 6% at 2 K was observed only for the film made at 80 W and 15 mTorr. Other magnetoresistance values were all below 1%. We also discussed the influence of carbon matrix on the giant magnetoresistance.

Original languageEnglish
Pages (from-to)113-118
Number of pages6
JournalJournal of Magnetism and Magnetic Materials
Volume286
Issue numberSPEC. ISS.
DOIs
StatePublished - Feb 2005

Keywords

  • Carbon films
  • FePt
  • GMR
  • Granular films
  • Superparamagnetism

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