|About this Abstract
|2024 TMS Annual Meeting & Exhibition
|Advanced Soft Magnets and Magnetocaloric Materials: An FMD Symposium in Honor of Victorino Franco
|Evidence of Large Cryogenic Magnetocaloric Effect in GdNi1-xCox (0 ≤ x ≤ 0.15)
|Anis Biswas, T. Del Rose, P. O. Ribeiro, B. P. Alho, V. S. R. de Sousa, E. P. Nóbrega, P. j. von Ranke, Yaroslav Mudryk
|On-Site Speaker (Planned)
While the concurrence of magnetic and structural changes generally produces a first-order magnetic phase transition, the series of GdNi1-xCox (0 ≤ x ≤ 0.15) intermetallic compounds exhibits unusual second-order phase transitions despite coupled magnetic and elastic phenomena. The samples show large cryogenic magnetocaloric effect (MCE) tunable between 70 and 115 K with varying x(Co) concentration, comparable with the best known potential magnetocaloric materials exhibiting second-order phase transition. A theoretical model based on the mean field theory approximation is formulated to describe magnetic, magnetoelastic,and magnetocaloric properties of the title alloys.
Acknowledgement: This work was performed at Ames National Laboratory and supported by the Division of Materials Science and Engineering of the Office of Basic Energy Sciences, Office of Science of the U.S. Department of Energy (U.S DOE). Ames National Laboratory is operated for the U.S DOE by Iowa State University under Contract No. DE-AC02-07CH11358.
|Magnetic Materials, Electronic Materials, Characterization