Influence of γ Phase on the Magnetostructural Transition and Magnetocaloric Properties of Ni38Co12Mn41Sn9 Melt-Spun Ribbons

F. Chen, J. L. Sánchez Llamazares, C. F. Sánchez-Valdés, P. Müllner, Y. X. Tong, L. Li

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

In the present work, Ni38Co12Mn41Sn9 melt-spun ribbons were annealed under different conditions to make samples free of secondary γ phase precipitates or get them with various average grain sizes. A comparative study was carried out to demonstrate how γ phase formation affects the martensitic transformation (MT) and the magnetocaloric properties linked to the first-order phase transition. The γ phase significantly reduces the structural transformation temperatures, while slightly increases the thermal hysteresis. The γ phase also decreases the maximum entropy change (|ΔS|max) and the effect is more significant for smaller γ phase precipitates. As compared with those with coarse γ phase grains, the ribbons containing smaller ones possess a lower |ΔS|max but a smaller maximum magnetic hysteresis loss.

Original languageAmerican English
Article number170900
JournalJournal of Magnetism and Magnetic Materials
Volume579
DOIs
StatePublished - 1 Aug 2023

Keywords

  • Effect of thermal annealing
  • Entropy change
  • First-order magnetostructural transition
  • Ni-Co-Mn-Sn melt spun ribbons
  • Secondary gamma phase

EGS Disciplines

  • Materials Science and Engineering

Fingerprint

Dive into the research topics of 'Influence of γ Phase on the Magnetostructural Transition and Magnetocaloric Properties of Ni38Co12Mn41Sn9 Melt-Spun Ribbons'. Together they form a unique fingerprint.

Cite this