Publication: Enhanced magnetic properties of FeCo ribbons nanocrystallized in magnetic field
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2009-03-23
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American Institute of Physics
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Abstract
ailoring the structure of nanocrystalline microstructures is an important step toward controlled design of novel nanostructured materials and devices. We demonstrate how the nanocrystalline microstructure of Co-rich ribbons can be tuned by annealing under magnetic field. The intensity of the field allows controlling different degrees of order at annealing temperatures corresponding to the first stages of the nanocrystallization process. The energy barrier for nucleation is directionally affected by the applied field. The influence of grains assembling on exchange coupling between grains has been analyzed by means of magnetic domains observation and magnetic characterization by means of a hysteresis loop.
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©American Institute of Physics.
This work has been supported by the MEC of Spain (Consolider-Ingenio 2010 Contract No. CSD2007-0010, Nanociencia Molecular. The authors want to acknowledge the contribution of Professor J. M. GonzĂ¡lez-Calbet and Dr. M. L. Ruiz-GonzĂ¡lez in the HREM studies.