F. Sánchez-De Jesús, A. M. Bolarín-Miró
A systematic study on the structural and magnetic properties of Fe100−xCox alloys (10<x<90, Δx=10 in wt. percent) obtained by mechanical alloying is presented. Elemental powders of Fe and Co mixed in an adequate weight ratio were milled at room temperature in a shaker mixer mill using vials and balls of hardened steel as milling media with a ball: powder weight ratio of 12:1. The mixtures were milled for 3 hours. The results show that, after milling, for almost all compositions (up to x=60), solid solutions based on bcc structures were obtained. For Co-rich alloys (x≥70), different phases were found, revealing the formation of a metastable intermetallic phase (FeCo, wairauite) together with fcc-Co and hcp-Co phases. The specific saturation magnetization increases with increasing Co content, reaching a maximum value of 225 emu/g for hcp-Fe70Co30, and then it diminishes to 15 emu/g for bcc-Fe30Co70. All studied alloys (Fe100−xCox) present low coercivity, in the range from 0 to 65 Oe, which is lower than reported. The coercivity increases with the increment in Co, reaching a maximum of 6.1 Oe for Fe40Co60. After that, the coercivity falls to 2.
@article{2afde723-4892-490e-9ce0-f8cdfde8daf1,
title={Structural Analysis and Magnetic Properties of FeCo Alloys Obtained by Mechanical Alloying},
author={F. Sánchez-De Jesús and A. M. Bolarín-Miró},
year={2016},
language={es}
}TY - JOUR TI - Structural Analysis and Magnetic Properties of FeCo Alloys Obtained by Mechanical Alloying AU - F. Sánchez-De Jesús AU - A. M. Bolarín-Miró PY - 2016 LA - es ER -
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