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Giant magnetoresistance (GMR) has recently been observed in a new system, melt-spun ribbons of Cu-Mn-Al. The GMR behavior in this system has been extensively studied for a range of compositions. It is suggested that the onset of GMR may be attributed to the appearance of tweed microstructure in the ferromagnetic Cu{sub 2}MnAl phase. It has also been observed that GMR existed in all samples consisting of a mixture of varying amounts of Cu{sub 2}MnAl and Cu{sub 9}Al{sub 4} phases. Extensive transmission electron microscopy studies have been carried out to evaluate the microstructural evolution of the tweed and the observed phases, and to correlate the microstructure with the observed GMR behavior.
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| Authors: |
Murthy, A.S.;
Yiping, L.;
Hadjipanayis, G.C. [Univ. of Delaware, Newark, DE (United States). Dept. of Physics and Astronomy];
Lawless, K.R. [Univ. of Virginia, Charlottesville, VA (United States). Dept. of Materials Science]
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| Publication Date: | 1995 Nov 01 |
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| OSTI Identifier: | 186969 |
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| Report Number(s): | CONF-950404-- |
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| Resource Type: | Journal Article |
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| Resource Relation: | Journal Name: IEEE Transactions on Magnetics; Journal Volume: 31; Journal Issue: 6Pt2; Conference: Conference on magnetism and magnetic materials, San Antonio, TX (United States), 18-21 Apr 1995; Other Information: PBD: Nov 1995 |
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| Country of Publication: | United States |
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| Language: | English |
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| Format: | Size: pp. 3958-3960 |
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| Other Number(s): | Journal ID: IEMGAQ; ISSN 0018-9464; TRN: IM9609%%242 |
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| Subject: | 36 MATERIALS SCIENCE; COPPER ALLOYS; MAGNETORESISTANCE; MICROSTRUCTURE; MANGANESE ALLOYS; ALUMINIUM ALLOYS; CHEMICAL COMPOSITION; EXPERIMENTAL DATA |
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| Update Date: | 2009 Dec 16 |
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