INVESTIGADORES
SIRKIN Hugo Ricardo Mario
artículos
Título:
Structural and magnetic correlation of Finemet alloys with Ge addition
Autor/es:
MURACA, D.; CREMASCHI, V.J.; MOYA, J.A.; SIRKIN, H. R. M.
Revista:
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Editorial:
Elsevier Science
Referencias:
Año: 2007 vol. 320 p. 810 - 814
ISSN:
0304-8853
Resumen:
The correlation between saturation magnetization and the magnetic moment per Fe atom in the nanocrystalline state is studied for Finemet-type alloys. These studies were performed on nanocrystalline ribbons whose compositions were Fe73.5Si13.5xGexNb3B9Cu1 (x ¼ 8, 10 and 13.5 at%). We used a simple lineal model, X-ray diffraction and Mo¨ssbauer spectroscopy data to calculate the magnetic contribution of the nanocrystals and the results were contrasted with the measured saturation magnetization of the different alloys. The technique presented here provides a very simple and powerful tool to compute the magnetic contribution of the nanocrystalline phase to the alloy. This calculus could be used to determine the volume fraction of nanocrystalline and amorphous phases in the nanocrystallized alloy, without using a very sophisticated microscopy method. r 2007 Elsevier B.V. All rights reserved.
