The role of pressure-induced stacking faults on the magnetic properties of gadolinium

2023/09/03 by Rafael Martinho Vieira, Olle Eriksson, Vieira, Rafael Martinho +7
Earth and Planetary Sciences · Materials Science · Physics and Astronomy · #Computational Physics (physics.comp-ph) #FOS: Physical sciences #High-pressure geophysics and materials #Magnetic Properties of Alloys #Materials Science (cond-mat.mtrl-sci) #Rare-earth and actinide compounds

paper · pdf · doi:10.48550/arxiv.2309.01285

openalex publication_date 2023/09/03 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Experimental data show that under pressure, Gd goes through a series of structural transitions hcp to Sm-type (close-packed rhombohedral) to dhcp that is accompanied by a gradual decrease of the Curie temperature and magnetization till the collapse of a finite magnetization close to the dhcp structure. We explore theoretically the pressure-induced changes of the magnetic properties, by describing these structural transitions as the formation of fcc stackings faults. Using this approach, we are able to describe correctly the variation of the Curie temperature with pressure, in contrast to a static structural model using the hcp structure.

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