Magnetic and magnetocaloric properties of ternary Gd-Co-Al bulk metallic glasses

TitleMagnetic and magnetocaloric properties of ternary Gd-Co-Al bulk metallic glasses
Publication TypeJournal Article
Year of Publication2011
AuthorsFu H, Zou M
Journal TitleJournal of Alloys and Compounds
Volume509
Pages4613-4616
Date Published03/31
ISBN Number0925-8388
Accession NumberISI:000288833100031
Keywordsalloys, bulk metallic glass, magnetocaloric effect, rare earth, transition
Abstract

Bulk metallic glasses (BMGs) with compositions of Gd55CoxAl45-x (15 <= x <= 30) and Gd60CoyAl40-y (15 <= y <= 30) were synthesized by an injection casting technique. Temperature dependence of magnetization of the BMGs indicates that their Curie temperatures can be tailored between 96 and 143 K by varying Gd and Co concentration. The magnetic entropy changes of the BMGs are greater than 9.0 J/kg K except for the Gd55Co30Al15 glass that exhibits a reduced magnetization due to its large Co content. The relative cooling powers of the BMGs are greater than those of any other crystalline compounds and decrease with the increasing Co content. (C) 2011 Elsevier B.V. All rights reserved.

URL<Go to ISI>://000288833100031
DOI10.1016/j.jallcom.2011.01.126
Alternate JournalJ Alloy CompdJ Alloy Compd