Tunability of correlated magnetocaloric effect and magnetoresistance by Ar ion irradiation in a Gd-based nanocrystalline/amorphous alloy

Qiang Luo*, Xiaodong Zhang, Baolong Shen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

The magnetocaloric effect and magnetoresistance (MR) of nanocrystalline/amorphous Gd65Co15Al10Zr10 alloy were investigated. The as-spun alloy shows a large maximum magnetic entropy change (MEC) of 5.4 Jkg−1K−1 under a field change of 5 T and a refrigerant capacity of 468.9 Jkg-1. It is found that Ar ion irradiation increases the MEC and refrigerant capacity (RC) of the alloy, which is associated with the anisotropic stress and heating effects, increasing the atomic mobility and short-range order around Gd. Moreover, the maximum MEC shows a power-law (linear) relationship with the MR above (below) the Curie temperature for the as-spun ribbon, which alters after irradiation.

Original languageEnglish
Pages (from-to)283-288
Number of pages6
JournalJournal of Alloys and Compounds
Volume788
DOIs
Publication statusPublished - 5 Jun 2019
Externally publishedYes

Keywords

  • Irradiation
  • Magnetic entropy change
  • Magnetoresistance
  • Microstructure

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