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Title: Investigation of room temperature ferromagnetic nanoparticles of Gd5Si4

Journal Article · · IEEE Transactions on Magnetics
 [1];  [2];  [3];  [1];  [3]
  1. Iowa State Univ., Ames, IA (United States); Ames Lab., Ames, IA (United States)
  2. Ames Lab., Ames, IA (United States)
  3. Iowa State Univ., Ames, IA (United States)
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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. As a result, magnetization at a high temperature of 275K decreases with the increase in the milling time.

Research Organization:
Ames Lab., Ames, IA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
CSR-KN/CRS-22; AC02-07CH11358
OSTI ID:
1227400
Report Number(s):
IS-J-8668; PII: S0368204814001571
Journal Information:
IEEE Transactions on Magnetics, Vol. 51, Issue 11; ISSN 0018-9464
Publisher:
Institute of Electrical and Electronics Engineers. Magnetics GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 13 works
Citation information provided by
Web of Science

Cited By (7)

Laser Irradiation of Gd−Si and Gd−Si−Ge Colloid Mixtures for the Fabrication of Compound Nanoparticles journal October 2018
Magnetocaloric Effect of Micro- and Nanoparticles of Gd5Si4 journal July 2019
Direct and indirect measurement of the magnetocaloric effect in bulk and nanostructured Ni-Mn-In Heusler alloy journal May 2018
Investigating phase transition temperatures of size separated gadolinium silicide magnetic nanoparticles journal May 2018
Gd 5 Si 4 -PVDF nanocomposite films and their potential for triboelectric energy harvesting applications journal March 2019
Differential effect of magnetic alignment on additive manufacturing of magnetocaloric particles journal January 2020
Gadolinium silicide (Gd 5 Si 4 ) nanoparticles for tuneable broad band microwave absorption journal February 2019

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Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
contrast agents
gadolinium nanoparticles
magnetocaloric nanoparticles
room temperature ferromagnetic nanoparticles