Soft Magnetic Materials 13

J. Phys. IV France 08 (1998) Pr2-115-Pr2-118
DOI: 10.1051/jp4:1998227

Influence of Gd addition on the magnetic properties of Fe-Cu-Nb-Si-B ribbons

O. Crisan^{1, 2}, J. M. Le Breton², M. Noguès³, F. Machizaud⁴, A. Jianu⁵, J. Teillet² and G. Filoti<sup>5

1</sup>  Institute of Physics and Technology of Materials, P. O. Box MG-7, 76900 Bucharest-Magurele, Romania
²  Magnétisme et Applications, GMP UMR 6634 du CNRS, Université de Rouen, 76821 Mont-Saint-Aignan cedex, France
³  Laboratoire de Magnétisme et d'Optique, URA 1531 du CNRS, Université de Versailles, 78035 Versailles cedex, France
⁴  LSG2M, École des Mines, Parc de Saurupt, URA 159 du CNRS, Université de Nancy, 54042 Nancy cedex, France
⁵  Institute of Physics and Technology of Materials, P.O. Box MG-7, 76900 Bucharest-Magurele, Romania

Abstract
The magnetic properties of the amorphous and nanocrystallized Fe-Cu-Nb-Si-B and Fe-Gd-Cu-Nb-Si-B ribbons are studied using temperature dependence of the specific magnetization. A two-phase ferromagnetic behaviour is obtained for the magnetization curves. Gd addition tends to stabilize the interfacial (grain boundary) phase by forming a metastable Gd-Fe-B phase, leading to the coexistence of two phases up to thermal treatments as high as 993K.

© EDP Sciences 1998