Table of Contents
Textures and Microstructures
Volume 32, Issue 1-4, Pages 245-267
http://dx.doi.org/10.1155/TSM.32.245

Influence of Nanocrystalline Structure on the Magnetic Properties of Wires and Microwires

1Instituto de Magnetismo Aplicado, UCM/RENFE, Instituto de Ciencia de Materiales, CSIC, P.O. Box 155., Madrid, Las Rozas 28230, Spain
2Dept. Física Materiales, Fac. Químicas, UPV, Barrio de Alza s/n, San Sebastian 20071, Spain

Accepted 28 September 1997

Copyright © 1999 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The determining factors of the outstanding magnetic properties of the so-called nanocrystalline materials are described. The discussion is based on results performed on wires and microwire materials with general composition FeSiB(CuNb) and obtained by different rapid solidification techniques. The evolution of magnetic properties (i.e., coercivity, magnetostriction) is correlated with the structural evolution associated to the corresponding heating parameters, experimentally determined by X-ray diffraction or differential scanning calorimetry. Finally, a discussion is introduced on the important role played by the structural nature of a two-phase system into the above-mentioned magnetic properties. A final analysis of some technological applications of devitrified magnetic wires and microwires is presented.