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Magnetic force microscopic study of Ce 2 (Fe, Co) 14 B, and its modifications by Ni and Cu

Title:

Magnetic force microscopic study of Ce 2 (Fe, Co) 14 B, and its modifications by Ni and Cu

Wang, Tian and Medraj, Mamoun (2018) Magnetic force microscopic study of Ce 2 (Fe, Co) 14 B, and its modifications by Ni and Cu. Journal of Magnetism and Magnetic Materials . ISSN 03048853 (In Press)

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Official URL: http://dx.doi.org/10.1016/j.jmmm.2018.03.058

Abstract

The domain width and domain wall energy of the Ce2Fe14-xCoxB solid solution are studied for the first time in this work. The influence of Co content on these properties has been analyzed with the aid of magnetic force microscopy using diffusion couple and key alloys. The domain widths of Ce2Fe14-xCoxB decreased with increasing Co content at about 0.02 μm per 1 at.% Co. In Ce2Fe14-xCoxB, phase shift, domain width and saturation magnetization are related in a way that lower average domain width is associated with higher phase shift and higher saturation magnetization. The highest domain wall energy of Ce2Fe14-xCoxB is measured as 31.7 erg/cm2 after dissolving 14 at.% Co (x=2.38). The effects of Ni and Cu on the domain width and domain wall energy of Ce2Fe14-xCoxB (x=1.02) are also studied and reported using response surfaces. The domain width and domain wall energy of this solid solution increased after doping with 1 at.% Ni at constant Co content of 6 at.%, measuring 1.39 μm for domain width and 33.4 erg/cm2 for domain wall energy. Both properties were determined as 0.71 μm and 18.6 erg/cm2, respectively, after doping with 0.8 at.% Cu, while keeping Co content constant at 6 at.%. When Ce2Fe14-xCoxB (x=1.02) is doped with both Ni (1 at.%) and Cu (0.8 at.%), the domain width and domain wall energy measured 0.99 μm and 33.8 erg/cm2, respectively.

Divisions:Concordia University > Gina Cody School of Engineering and Computer Science > Mechanical, Industrial and Aerospace Engineering
Item Type:Article
Refereed:Yes
Authors:Wang, Tian and Medraj, Mamoun
Journal or Publication:Journal of Magnetism and Magnetic Materials
Date:25 March 2018
Funders:
  • General Motors of Canada Ltd
  • Natural Sciences and Engineering Research Council of Canada
Digital Object Identifier (DOI):10.1016/j.jmmm.2018.03.058
Keywords:Magnetic force microscopy; magnetic Ce2Fe14-xCoxB; domain width; domain wall energy
ID Code:983633
Deposited By: MICHAEL BIRON
Deposited On:28 Mar 2018 20:21
Last Modified:28 Mar 2018 20:21

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