Microstructure and soft magnetic properties of nanocrystalline (Co0.77Si0.135B0.095)90Fe7Nb3alloy

✍ Scribed by Iturriza, N. ;Zhukov, A. ;Val, J. J. del ;Murillo, N. ;González, J.

• Publisher: John Wiley and Sons
• Year: 2008
• Tongue: English
• Weight: 408 KB
• Volume: 205
• Category: Article
• ISSN: 0031-8965
• DOI: 10.1002/pssa.200778129

✦ Synopsis

Abstract

Microstructure and magnetic hysteretic properties of (Co~0.77~Si~0.135~B~0.095~)~90~Fe~7~Nb~3~ amorphous ribbons submitted to current annealing (current density of 56 A/mm^2^ during 2 minutes), to develop the nanocrystallization state, are reported. Temperature dependencies of the saturation magnetization, remanence and coercivity are explained by considering the presence of two crystalline phases, namely: nanocrystals of bcc‐Fe,Co(Si) and fcc‐Co grains and the remaining amorphous matrix. A significant magnetic hardening is observed above the Curie point of the residual amorphous matrix, which could be ascribed to an exchange and a dipolar decoupling of the nanograins. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)