Investigation of Room Temperature Ferromagnetic Nanoparticles of Gd5Si4
Date
Authors
Major Professor
Advisor
Committee Member
Journal Title
Journal ISSN
Volume Title
Publisher
Authors
Research Projects
Organizational Units
Journal Issue
Is Version Of
Versions
Series
Department
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.