Archivio Istituzionale della RicercaWe have studied the structure and giant magnetoresistance (GMR) in the Co15Cu85 granular alloys prepared by melt-spinning and annealed by the direct-current (de) 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 de Joule-heated samples than that for the samples annealed in a furnace.
Giant magnetoresistance in magnetic granular Co15 Cu85 alloys annealed by direct-current Joule heating / R. H., Yu; X. X., Zhang; J., Tejada; M., Knobel; P., Tiberto; Allia, PAOLO MARIA EUGENIO ICILIO; F., Vinai. - In: JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS. - ISSN 0304-8853. - 164:1-2(1996), pp. 99-104. [10.1016/S0304-8853(96)00357-5]
Giant magnetoresistance in magnetic granular Co15 Cu85 alloys annealed by direct-current Joule heating
ALLIA, PAOLO MARIA EUGENIO ICILIO;
1996
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 (de) 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 de Joule-heated samples than that for the samples annealed in a furnace.
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https://hdl.handle.net/11583/2498101
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