Artículo
Dipole–dipole interaction in superparamagnetic nanocrystalline Fe63.5Cr10Si13.5B9Cu1Nb3
Autor/es | Franco García, Victorino
Conde Amiano, Clara Francisca Conde Amiano, Alejandro Kiss, L.F. Kaptás, D. Kemény, T. Vincze, I. |
Departamento | Universidad de Sevilla. Departamento de Física de la Materia Condensada |
Fecha de publicación | 2001 |
Fecha de depósito | 2019-11-12 |
Publicado en |
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Resumen | Cr-substituted Finemet-type nanocrystalline alloy (Fe63.5Cr10Si13.5B9Cu1Nb3) has been studied by
differential scanning calorimetry, x-ray diffraction, Mo¨ssbauer spectroscopy, and magnetic
measurements. The Curie temperature ... Cr-substituted Finemet-type nanocrystalline alloy (Fe63.5Cr10Si13.5B9Cu1Nb3) has been studied by differential scanning calorimetry, x-ray diffraction, Mo¨ssbauer spectroscopy, and magnetic measurements. The Curie temperature of the remaining amorphous phase decreases as the crystalline volume fraction increases, reaching values below room temperature. This feature makes the alloy adequate for studying the magnetic decoupling of the ~Fe,Si! nanocrystals at moderated temperatures and, in particular, the superparamagnetic relaxation in broad temperature and crystalline fraction ranges. It was shown that the anomalous dependence of the coercive field on the annealing temperature can be satisfactorily explained assuming a dipolar-type interaction between the crystallites. |
Identificador del proyecto | PB97-1119-CO2-01
OTKA T-030753 AKP 98-25 2,2 |
Cita | Franco García, V., Conde Amiano, C.F., Conde Amiano, A., Kiss, L.F., Kaptás, D., Kemény, T. y Vincze, I. (2001). Dipole–dipole interaction in superparamagnetic nanocrystalline Fe63.5Cr10Si13.5B9Cu1Nb3. Journal of Applied Physics, 90 (3), 1558-1563. |
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