<abstract xmlns="http://www.w3.org/1999/xhtml">

Magnetostrictive TbxHo0:8−xPr0:2Fe1:8Mn0:1 (0 ⩽ x ⩽ 0.20) alloys are prepared by arc-melting and subsequent annealing. The dopant of Pr/Mn introduced into RFe2 compounds effectively stabilizes the forming of single C15 Laves phase at ambient pressure. The easy magnetization direction (EMD) varies when Tb content increases, which is accompanied by a crystalstructural transition. EMD lies along ‹1 0 0› axis for x ⩽ 0.05, rotating to ‹1 1 1› axis for x ⩽ 0.12, with a tetragonal symmetry changing to a rhombohedral one. Magnetocrystalline-anisotropy compensation is obtained with the optimized composition of x = 0.12, shifting to the Tb-poor side in comparison to Pr/Mn-free counterpart. An enhanced effect on magnetoelastic properties is achieved in Tb0:12Ho0:68Pr0:2Fe1:8Mn0:1, which simultaneously possesses a low anisotropy and high magnetostriction performance, i.e. λs ~ 420 ppm, λ111 ~ 970 ppm, and a large low-field λa ~ 390 ppm/2 kOe, being 30 % higher than that of Pr/Mn-free compound. Combining low-cost light rare earth Pr with the lower Tb content, Tb0:12Ho0:68Pr0:2Fe1:8Mn0:1 may make it promising solution in magnetostrictive applications.
</abstract>

Magnetostrictive TbxHo0:8−xPr0:2Fe1:8Mn0:1 (0 ⩽ x ⩽ 0.20) alloys are prepared by arc-melting and subsequent annealing. The dopant of Pr/Mn introduced into RFe2 compounds effectively stabilizes the forming of single C15 Laves phase at ambient pressure. The easy magnetization direction (EMD) varies when Tb content increases, which is accompanied by a crystalstructural transition. EMD lies along ‹1 0 0› axis for x ⩽ 0.05, rotating to ‹1 1 1› axis for x ⩽ 0.12, with a tetragonal symmetry changing to a rhombohedral one. Magnetocrystalline-anisotropy compensation is obtained with the optimized composition of x = 0.12, shifting to the Tb-poor side in comparison to Pr/Mn-free counterpart. An enhanced effect on magnetoelastic properties is achieved in Tb0:12Ho0:68Pr0:2Fe1:8Mn0:1, which simultaneously possesses a low anisotropy and high magnetostriction performance, i.e. λs ~ 420 ppm, λ111 ~ 970 ppm, and a large low-field λa ~ 390 ppm/2 kOe, being 30 % higher than that of Pr/Mn-free compound. Combining low-cost light rare earth Pr with the lower Tb content, Tb0:12Ho0:68Pr0:2Fe1:8Mn0:1 may make it promising solution in magnetostrictive applications.

Enhanced magnetoelastic performance in Pr/Mn-doped Laves phase (Tb,Ho)Fe2 compounds

Faculty of Materials Science & Chemical Engineering

Materials Science-Poland

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Enhanced magnetoelastic performance in Pr/Mn-doped Laves phase (Tb,Ho)Fe compounds

Magnetostrictive TbxHo0:8−xPr0:2Fe1:8Mn0:1 (0 ⩽ x ⩽ 0.20) alloys are prepared by arc-melting and subsequent annealing. The dopant of Pr/Mn introduced into RFe2...

Enhanced magnetoelastic performance in Pr/Mn-doped Laves phase (Tb,Ho)Fe₂ compounds

Pubblicato online: 13 apr 2021

Pagine: 707 - 714

Ricevuto: 03 set 2020

Accettato: 22 dic 2020

DOI: https://doi.org/10.2478/msp-2020-0084

Parole chiave
intermetallics, magnetostriction, magnetic properties, Laves phase, X-ray technique

© 2021 M.K. Wang et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Enhanced magnetoelastic performance in Pr/Mn-doped Laves phase (Tb,Ho)Fe2 compounds

Pubblicato online: 13 apr 2021

Pagine: 707 - 714

Ricevuto: 03 set 2020

Accettato: 22 dic 2020

DOI: https://doi.org/10.2478/msp-2020-0084

Parole chiaveintermetallics, magnetostriction, magnetic properties, Laves phase, X-ray technique

© 2021 M.K. Wang et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Enhanced magnetoelastic performance in Pr/Mn-doped Laves phase (Tb,Ho)Fe₂ compounds

Parole chiave
intermetallics, magnetostriction, magnetic properties, Laves phase, X-ray technique