Twins–A weak link in the magnetic hardening of ThMn12-type permanent magnets

S Ener, KP Skokov, D Palanisamy, T Devillers… - Acta Materialia, 2021 - Elsevier
Nd 2 Fe 14 B-type materials exhibit the highest energy product around room temperature
and hence dominate the high-performance permanent magnet market. Intensive research …

rare-earth-free permanent magnets: The effects of twinning versus dislocations in Mn-Al magnets

Y Jia, Y Wu, S Zhao, S Zuo, KP Skokov, O Gutfleisch… - Physical Review …, 2020 - APS
Defects of various kinds strongly affect local magnetic anisotropy and thus play a crucial role
in coercivity in high-performance permanent magnets. In particular, in rare-earth-free …

Microstructure and extrinsic magnetic properties of anisotropic Sm (Fe, Ti, V) 12-based sintered magnets

JS Zhang, X Tang, A Bolyachkin, AK Srinithi, T Ohkubo… - Acta Materialia, 2022 - Elsevier
Anisotropic SmFe 12-based sintered magnets require an optimum microstructure and alloy
composition to have a large coercivity μ 0 H c and remanent magnetization μ 0 M r. In this …

Roadmap towards optimal magnetic properties in L10-MnAl permanent magnets

Y Jia, Y Wu, Y Xu, R Zheng, S Zhao, KP Skokov… - Acta Materialia, 2023 - Elsevier
Twin boundaries impact negatively the magnetic properties in conventionally-fabricated L1 0-
type and RETM 12-type permanent magnets. Herein, we propose a strategy to suppress …

On the ε→ τ phase transformation and twinning in L10− MnAl alloys

Y Jia, H Ding, Y Wu, J Wang, H Wu, T Ma, S Zhao… - Acta Materialia, 2022 - Elsevier
Formation of twins have been recognized as the bottleneck that limit the high-performance of
L1 0-type Mn-Al permanent magnets. Although it is known that twinning occurs as a …

Grain boundary engineering in Nd-based ThMn12 magnets and their nitrides: A comprehensive study of challenges and limitations

XF Liao, A Aubert, F Maccari, S Riegg, S Ener… - Journal of Alloys and …, 2023 - Elsevier
Grain boundaries in rare earth permanent magnets are of major importance to optimize
coercivity and densification during sintering. In this work, grain boundary engineering of Nd …

High-coercivity ThMn12-type monocrystalline Sm–Zr–Fe–Co–Ti particles by high-temperature reduction diffusion

AM Gabay, GC Hadjipanayis - Scripta Materialia, 2021 - Elsevier
Abstract The ThMn 12-type (Sm, Zr) 1 (Fe, Co, Ti) 12 compounds have the potential of
powerful permanent magnets. Magnetically hard and anisotropic powders of such …

Grain boundary segregation, phase formation, and their influence on the coercivity of rapidly solidified hard magnetic alloys

D Palanisamy, S Ener, F Maccari, L Schäfer… - Physical Review …, 2020 - APS
SmF e 11 Ti-based alloys have potential as permanent magnet materials; however, until
now, crystallographically textured bulk permanent magnets have not yet been produced …

Ab initio phase stabilities of rare-earth lean Nd-based hard magnets

Hİ Sözen, T Klüner - Journal of Magnetism and Magnetic Materials, 2022 - Elsevier
Due to the resource criticality of rare earth (RE) elements on the world market, combined
with an increasing demand for high-performance hard magnets for applications like wind …

Combined ab initio and experimental screening of phase stabilities in the Ce-Fe-Ti- system ( and metals)

HI Sözen, S Ener, F Maccari, B Fayyazi… - Physical Review …, 2023 - APS
One of the main challenges for the synthesis and application of the promising hard-magnetic
compound Ce Fe 11 Ti is the formation of Laves phases that are detrimental for their …