Campus Units

Electrical and Computer Engineering, Materials Science and Engineering, Ames Laboratory

Document Type

Article

Publication Version

Accepted Manuscript

Publication Date

11-2015

Journal or Book Title

IEEE Transactions on Magnetics

Volume

51

Issue

11

First Page

2504104

DOI

10.1109/TMAG.2015.2446774

Abstract

Gd5(SixGe1-x)4 compounds undergo first-order phase transitions close to room temperature when x ~ = 0.5, which are accompanied by extreme changes of properties. We report the fabrication of the nanoparticles of one of the parent compounds-Gd5Si4-using high-energy ball milling. Crystal structure, microstructure, and magnetic properties have been investigated. Particles agglomerate at long milling times, and the particles that are milled >20 min lose crystallinity and no longer undergo magnetic phase transition close to 340 K, which is present in a bulk material. The samples milled for >20 min exhibit a slightly increased coercivity. Magnetization at a high temperature of 275 K decreases with the increase in the milling time.

Comments

This is a manuscript of an article published as Hadimani, R. L., S. Gupta, S. M. Harstad, V. K. Pecharsky, and D. C. Jiles. "Investigation of Room Temperature Ferromagnetic Nanoparticles of Gd 5 Si 4." IEEE Transactions on Magnetics 51, no. 11 (2015): 1-4. DOI: 10.1109/TMAG.2015.2446774. Posted with permission.

Rights

Copyright 2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

Copyright Owner

IEEE

Language

en

File Format

application/pdf

Published Version

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