Magnetic behavior of twin roller melt spun Cu90 Co10 alloys

dc.creatorNúñez Coavas, Henry
dc.creatorPozo Lopez, Gabriela del Valle
dc.creatorFabietti, Luis Maria Rodolfo
dc.creatorCondó, Sergio Alberto
dc.creatorUrreta, Silvia Elena
dc.date2013-08
dc.date.accessioned2023-08-31T00:45:19Z
dc.date.available2023-08-31T00:45:19Z
dc.identifierhttp://hdl.handle.net/11336/185877
dc.identifierNúñez Coavas, Henry; Pozo Lopez, Gabriela del Valle; Fabietti, Luis Maria Rodolfo; Condó, Sergio Alberto; Urreta, Silvia Elena; Magnetic behavior of twin roller melt spun Cu90 Co10 alloys; Institute of Electrical and Electronics Engineers; IEEE Transactions on Magnetics; 49; 8; 8-2013; 4518-4521
dc.identifier0018-9464
dc.identifier1941-0069
dc.identifierCONICET Digital
dc.identifierCONICET
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8543755
dc.descriptionMagnetoresistive Cu90 Co10 alloys have been produced by twin roller melt spinning at tangential wheel speeds between 10 m/s and 30 m/s to obtain different solute and Co-rich precipitate distributions. X-ray diffraction indicates that the ribbons are polycrystalline with a fcc Cu(Co) (200) textured matrix; no evidence of a spinodal-like composition modulation could be detected with this technique. Transmission electron microscopy observations performed in samples quenched at 10 m/s indicate the existence of small, coherent, Co-rich precipitates of mean size of about 11 nm and bigger (~40 nm) Co-oxide particles. The small coherent precipitates form colonies inside the grains, mediated by precipitate free zones. Samples quenched at 30 m/s are single magnetic phase (superparamagnetic), but the hysteresis loops of the other as cast ribbons are well fitted by a superparamagnetic contribution and a ferromagnetic one, the latter arising from the Co-rich precipitates. Room temperature coercivities, of about 30-50 mT, are lower than those predicted for a mechanism of coherent rotation in the ensemble of non-interacting, Co-rich precipitates.
dc.descriptionFil: Núñez Coavas, Henry. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física; Argentina
dc.descriptionFil: Pozo Lopez, Gabriela del Valle. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física; Argentina
dc.descriptionFil: Fabietti, Luis Maria Rodolfo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física; Argentina
dc.descriptionFil: Condó, Sergio Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina
dc.descriptionFil: Urreta, Silvia Elena. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física; Argentina
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dc.languageeng
dc.publisherInstitute of Electrical and Electronics Engineers
dc.relationinfo:eu-repo/semantics/altIdentifier/url/https://ieeexplore.ieee.org/document/6566106
dc.relationinfo:eu-repo/semantics/altIdentifier/doi/10.1109/TMAG.2013.2259618
dc.rightsinfo:eu-repo/semantics/openAccess
dc.rightshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subjectMAGNETIC PROPERTIES
dc.subjectMELT SPINNING
dc.subjectPRECIPITATION
dc.subjectSPINODAL DECOMPOSITION
dc.subjecthttps://purl.org/becyt/ford/1.3
dc.subjecthttps://purl.org/becyt/ford/1
dc.titleMagnetic behavior of twin roller melt spun Cu90 Co10 alloys
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:ar-repo/semantics/artículo
dc.typeinfo:eu-repo/semantics/publishedVersion


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