Giant magnetoresistance in magnetic granular Co15Cu85 alloys annealed by direct-current Joule heating

R. H. Yu*, Xixiang Zhang, J. Tejada, M. Knobel, P. Tiberto, P. Allia, F. Vinai

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

We have studied the structure and giant magnetoresistance (GMR) in the Co15Cu85 granular alloys prepared by melt-spinning and annealed by the direct-current (dc) Joule heating. At T = 10 K, GMR as large as 50.0% (in a magnetic field up to 30 kOe) has been observed in a sample annealed with I = 6 A. The Joule-heated samples show higher GMR than those annealed by the conventional method. It is attributed to less content of residual Co in the Cu matrix for the dc Joule-heated samples than that for the samples annealed in a furnace.

Original languageEnglish (US)
Pages (from-to)99-104
Number of pages6
JournalJournal of Magnetism and Magnetic Materials
Volume164
Issue number1-2
DOIs
StatePublished - Jan 1 1996

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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