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Title

Magnetostatic coupling in soft/hard biphase magnetic systems based on amorphous alloys

AuthorsTorrejón, Jacob CSIC ORCID; Kraus, L.; Pirota, K. R. CSIC; Badini-Confalonieri, G. A. CSIC; Vázquez Villalabeitia, Manuel CSIC ORCID CVN
KeywordsCobalt alloys
Iron alloys
Ferromagnetic materials
Silicon alloys
Boron alloys
Nickel alloys
Issue Date18-Apr-2007
PublisherAmerican Institute of Physics
CitationJournal of Applied Physics 101(9): 09N105 (2007)
AbstractWe report on magnetic bias in biphase systems arising from by dipolarlike interaction. Composites consist of amorphous ribbons and wires prepared by rapid solidification techniques, surrounded by an electroplated layer. Amorphous metallic core is (Co0.94Fe0.06)72.5Si12.5B15 with ultrasoft magnetic behavior (coercivity of 10–10−1 A/m), and the electroplated coating is crystalline Co85Ni15 alloy with harder magnetic character (coercivity of 104 A/m. After premagnetizing in a dc saturating field (106 A/m), the low-field (±103 A/m) hysteresis loops are ascribed to the magnetization process of the soft core and exhibit a typical shift towards the direction of the premagnetizing field. This shift is ascribed to the magnetostatic field generated by uncompensated poles at the edges of the hard layer, which remains close to its remanence state. The influence of the geometry of both phases on magnetostatic energy term allows us to tailor the bias field and susceptibility of the core. These results open other possibilities to use these materials as sensing elements in magnetic sensor.
Description3 pages, 4 figures, 1 table.-- PACS: 75.70.Cn; 75.50.Bb; 75.50.Kj; 64.70.Dv; 81.30.Fb; 75.60.Ej
Publisher version (URL)http://dx.doi.org/10.1063/1.2710545
URIhttp://hdl.handle.net/10261/21756
DOI10.1063/1.2710545
ISSN0021-8979
Appears in Collections:(ICMM) Artículos




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