Crystallization kinetics and soft magnetic properties in metalloid-free (Fe, Co)90Zr10 amorphous and nanocrystalline alloys

JOURNAL OF ALLOYS AND COMPOUNDS

卷:615

Article; Proceedings Paper

Blazquez, J. S.¹  Ipus, J. J.¹  Conde, C. F.¹  Cabrera, D.¹  Franco, V.¹  Conde, A.¹ 

[1] Univ Seville, ICMSE CSIC, Dept Fis Mat Condensada, E-41080 Seville, Spain

关键词: Soft magnetic alloys;    Amorphous and nanocrystalline alloys;    Crystallization kinetics;   

DOI  :  10.1016/j.jallcom.2014.01.095

来源: Elsevier

【 摘 要 】

Microstructure and magnetic properties of metalloid-free (Fe100-xCox)(90)Zr-10 amorphous and nanocrystalline alloys were characterized. Devitrification of these amorphous alloys occurs in two overlapped transformations leading to the formation of alpha-Fe(Co) and Fe(Co)Zr-2 phases. Constant local Avrami exponents have been found for each individual process. Although Co-free alloy shows a larger grain size, crystalline fractions are similar for both alloys after equivalent annealing. Good soft magnetic properties at room temperature have been observed for amorphous and nanocrystalline alloy with x = 30, which exhibits an amorphous Curie temperature of 735 K. The x = 0 amorphous alloy is paramagnetic at room temperature and nanocrystalline samples exhibit a transition to superparamagnetic behavior. (C) 2014 Elsevier B.V. All rights reserved.

【 授权许可】

Free