Structural relaxation, crystallization and improvement of magnetic properties in FeXSiB (X=Cr, Nb)-type amorphous alloys

Autor: L. Pająk, L. Lelątko, Grzegorz Haneczok, G. Badura, P. Kwapuliński, Z. Stokłosa, J. Rasek
Rok vydání: 2008
Předmět:
Zdroj: Journal of Magnetism and Magnetic Materials. 320:e762-e765
ISSN: 0304-8853
DOI: 10.1016/j.jmmm.2008.04.091
Popis: In the present paper, the influence of Nb and Cr on intensity of structural relaxation, crystallization processes, electric and magnetic properties in the Fe 76 Nb 2 Si 13 B 9 , Fe 76 Cr 2 Si 13 B 9 and Fe 76 Nb 1 Cr 1 Si 13 B 9 alloys were investigated. It was shown that the improvement of magnetic permeability caused by a suitable annealing is a thermally activated process. Activation energy of this process is found to be of the order of 1 eV. Cr as an alloying addition to the Fe–Si–B alloy does not change the 1 h optimization annealing temperature and causes an increase of its efficiency. Nb as an alloying addition causes an increase of the 1 h optimization annealing temperature, and also the temperature of the first step of crystallization.
Databáze: OpenAIRE