Delving into the Correlation between Magnetic and Lattice Degrees of Freedom from Magnetocaloric and Magnetovolume Effects in Lu₂Fe₁₇ Ribbons.

ABSTRACT: Nowadays, R₂Fe₁₇ (R = rare earth) materials with zero (ZTE) or negative (NTE) thermal expansion are of significant interest in advanced applications, especially for intermediate performance low-cost magnets. Lu₂Fe₁₇ ribbon flakes were fabricated by means of the melt-spinning technique, while a bulk sample was synthesized by arc melting and long-term annealing as a reference alloy. Both the as-cast ribbons and the bulk sample adopt a Th₂Ni₁₇-type hexagonal crystal structure. The anomalous temperature dependence of the lattice parameters in the ribbons confirms the existence of strong magnetovolume effects, characterized by NTE and ZTE along the c and a crystallographic axis, respectively. In addition, magnetic m

SUBMITTER: Garrido Alvarez JL 

PROVIDER: S-EPMC12536504 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature