Campus Units

Physics and Astronomy, Materials Science and Engineering, Ames Laboratory

Document Type

Article

Publication Version

Submitted Manuscript

Publication Date

11-1-2020

Journal or Book Title

Journal of Magnetism and Magnetic Materials

Volume

513

First Page

167214

DOI

10.1016/j.jmmm.2020.167214

Abstract

New determination of the magnetic anisotropy from single crystals of (Fe1-xCox)(2)B alloys are presented. The anomalous temperature dependence of the anisotropy constant is discussed using the standard Callen-Callen theory, which is shown to be insufficient to explain the experimental results. A more material specific study using first-principles calculations with disordered moments approach gives a much more consistent interpretation of the experimental data. Since the intrinsic properties of the alloys with x = 0.3 - 0.35 are promising for permanent magnets applications, initial investigation of the extrinsic properties are described, in particular the crystallization of melt spun ribbons with Cu, Al, and Ti additions. Previous attempts at developing a significant hysteresis have been unsuccessful in this system. Our melt-spinning experiment indicates that this system shows rapid crystallization.

Comments

This is a manuscript of an article published as Lamichhane, Tej Nath, Olena Palasyuk, Vladimir P. Antropov, Ivan A. Zhuravlev, Kirill D. Belashchenko, Ikenna C. Nlebedim, Kevin W. Dennis, Anton Jesche, Matthew J. Kramer, Sergey L. Bud’ko, R. William McCallum, Paul C. Canfield, and ValentinTaufour. "Reinvestigation of the intrinsic magnetic properties of (Fe1-xCox) 2B alloys and crystallization behavior of ribbons." Journal of Magnetism and Magnetic Materials 513 (2020): 167214. DOI: 10.1016/j.jmmm.2020.167214. Posted with permission.

Copyright Owner

Elsevier B.V.

Language

en

File Format

application/pdf

Published Version

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