Magnetocaloric Properties of Rare-Earth-Free Mn27Cr7Ni33Ge25Si8 High-Entropy Alloy

Sarlar K., Tekgul A., KÜÇÜK İ.

IEEE MAGNETICS LETTERS, vol.10, 2019 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 10
  • Publication Date: 2019
  • Doi Number: 10.1109/lmag.2019.2955667
  • Journal Name: IEEE MAGNETICS LETTERS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Bursa Uludag University Affiliated: Yes

Abstract

The magnetic and magnetocaloric properties of a new Mn27Cr7Ni33Ge25Si8 high-entropy alloy (HEA) were investigated. The crystal structure is characterized through multiphase Rietveld refinement of X-ray diffraction data. The structure of the HEA is orthorhombic in the Pnma space group. Arrott plots indicate that the ferromagnetic-paramagnetic phase transition is of second order. The maximum magnetic entropy change is 2.49 J.kg(-1).K-1, among the highest reported for alloys that do not contain rare earth elements.