Coercivity and Magnetic Anisotropy of (Fe<sub>0.76</sub>Si<sub>0.09</sub>B<sub>0.10</sub>P<sub>0.05</sub>)<sub>97.5</sub>Nb<sub>2.0</sub>Cu<sub>0.5</sub> Amorphous and Nanocrystalline Alloy Produced by Gas Atomization Process
Kenny L. Alvarez,
José Manuel Martín,
Nerea Burgos,
Mihail Ipatov,
Lourdes Domínguez,
Julián González
Affiliations
Kenny L. Alvarez
CEIT-IK4 and Tecnun (University of Navarra), P. de Manuel Lardizábal 15, 20018 San Sebastián, Spain
José Manuel Martín
CEIT-IK4 and Tecnun (University of Navarra), P. de Manuel Lardizábal 15, 20018 San Sebastián, Spain
Nerea Burgos
CEIT-IK4 and Tecnun (University of Navarra), P. de Manuel Lardizábal 15, 20018 San Sebastián, Spain
Mihail Ipatov
SGIker (Magnetic Measurements), University of the Basque Country, Av. Tolosa 72, 20018 San Sebastián, Spain
Lourdes Domínguez
Department of Applied Physics I, Engineering School, University of the Basque Country, Plaza Europa s/n, 20018 San Sebastián, Spain
Julián González
Department of Materials Physics, Faculty of Chemistry, University of the Basque Country, P. de Manuel Lardizabal 3, 20018 San Sebastián, Spain
We present the evolution of magnetic anisotropy obtained from the magnetization curve of (Fe0.76Si0.09B0.10P0.05)97.5Nb2.0Cu0.5 amorphous and nanocrystalline alloy produced by a gas atomization process. The material obtained by this process is a powder exhibiting amorphous character in the as-atomized state. Heat treatment at 480 °C provokes structural relaxation, while annealing the powder at 530 °C for 30 and 60 min develops a fine nanocrystalline structure. Magnetic anisotropy distribution is explained by considering dipolar effects and the modified random anisotropy model.
