Structural evolution and magnetoresistance properties of heat treated Cu[sub 80]Co[sub 15]Fe[sub 5] ribbons

Conference · Mon Nov 01 00:00:00 EST 1993 · IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States)

OSTI ID:6824039

Harris, V G; Das, B N; Rubinstein, M; Goldberg, J L; Elam, W T; Koon, N C ^[1]

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1. Naval Research Lab., Washington, DC (United States)

Heat treated Cu[sub 80]Co[sub 15]Fe[sub 5] melt-spun ribbons were analyzed for their structural and magnetoresistance (MR) properties. Magnetoresistance values were found to be a maximum for the sample annealed at 500 C. Structural characterization using X-ray diffraction and absorption measurements, together with transmission electron microscopy, show this sample to have two precipitate phases within a Cu-rich fcc matrix; a Co-rich fcc phase and a CoFe bcc phase. Heat treatments at higher temperatures brought about a decrease in MR. Dark field TEM images illustrate the clustering of the precipitate particles concurrent with the decrease in MR suggesting that a clustering mechanism may contribute to the MR effect in these materials.

• OSTI ID: 6824039
• Report Number(s): CONF-930416-; CODEN: IEMGAQ
• Journal Information: IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States), Vol. 29:6Pt1; Conference: INTERMAG '93: international magnetics conference, Stockholm (Sweden), 13-16 Apr 1993; ISSN 0018-9464
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COBALT ALLOYS
MAGNETORESISTANCE
MICROSTRUCTURE
COPPER BASE ALLOYS
IRON ALLOYS
EXPERIMENTAL DATA
TRANSMISSION ELECTRON MICROSCOPY
ALLOYS
COPPER ALLOYS
DATA
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRON MICROSCOPY
INFORMATION
MICROSCOPY
NUMERICAL DATA
PHYSICAL PROPERTIES
360102* - Metals & Alloys- Structure & Phase Studies
360104 - Metals & Alloys- Physical Properties