Magnetism and the magnetocaloric effect in amorphous metals formed by the series Gd10-xNix

• Published in: Applied physics. A, Materials science & processing Vol. 130; no. 5
• Main Authors: Nóbrega, E. P., Freitas, V. L. O., Costa, S. S., Alho, B. P., Ribeiro, P. O., de Sousa, V. S. R., von Ranke, P. J.
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.05.2024; Springer Nature B.V
• Subjects: Binary alloys; Characterization and Evaluation of Materials; Condensed Matter Physics; Ferromagnetism; Gadolinium; Machines; Magnetic properties; Magnetism; Manufacturing; Mean field theory; Nanotechnology; Optical and Electronic Materials; Phase transitions; Physics; Physics and Astronomy; Processes; Surfaces and Interfaces; Thin Films; Magnetic refrigeration; Amorphous metals; Magnetism; 82D40; Magnetocaloric effect
• ISSN: 0947-8396; 1432-0630
• DOI: 10.1007/s00339-024-07544-1

In this work, we will study magnetism and the magnetocaloric effect in amorphous ferromagnets formed by the series G d 100 - x N i x , where x = 29 , 32, 35 and 37. To calculate the magnetocaloric potential and magnetizations as a function of temperature and applied magnetic field, we will use the mean-field theory with the Handrich approximation to deal with the lack of structural order in amorphous systems. We seek to understand how the replacement of Gd by Ni influences the magnetocaloric properties of the binary alloys formed. The present study is important for the possible practical applications of the magnetocaloric effect and for understanding the microscopic mechanisms involved in the magnetic phase transitions of amorphous systems.