First-principles determination of intergranular atomic arrangements and magnetic properties in rare-earth permanent magnets

Y Gohda - Science and Technology of Advanced Materials, 2021 - Taylor & Francis
Development of high-performance permanent magnets relies on both the main-phase
compound with superior intrinsic magnetic properties and the microstructure effect for the …

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 …

Calculating temperature-dependent properties of permanent magnets by atomistic spin model simulations

Q Gong, M Yi, RFL Evans, BX Xu, O Gutfleisch - Physical Review B, 2019 - APS
Temperature-dependent magnetic properties of Nd 2 Fe 14 B permanent magnets, ie,
saturation magnetization M s (T), effective magnetic anisotropy constants K i eff (T)(i= 1, 2 …

Effect of Co on spinodal decomposition and magnetic properties in Fe (67− X) Cr31CoXSi2 (X= 9, 14, 19, 24) medium entropy alloys

Z Xiang, L Zhang, B An, Y Xin, R Niu, J Lu, RE Goddard… - Scripta Materialia, 2024 - Elsevier
We synthesized four Fe (67− X) Cr 31 Co X Si 2 (X= 9, 14, 19, and 24 at.%) medium-entropy
alloys and investigated the effect of Co on the connection between magnetic properties and …

Multiscale simulations toward calculating coercivity of Nd-Fe-B permanent magnets at high temperatures

Q Gong, M Yi, BX Xu - Physical Review Materials, 2019 - APS
A computational scheme integrating the atomistic spin model (ASM) and micromagnetic
simulations is proposed to predict the coercivity of Nd-Fe-B permanent magnets at high …

Improvement of magnetic properties and hardness by alloying Mo to a FeCrCo alloy

Z Xiang, E Wang, T Wang, B An, Y Xin, J Lu, R Niu… - Acta Materialia, 2024 - Elsevier
In most of the technologies used for improving material properties, the enhancement of
some properties usually leads to the degradation of others. In this study, we demonstrated …

Anisotropic exchange in Nd–Fe–B permanent magnets

Q Gong, M Yi, RFL Evans, O Gutfleisch… - Materials Research …, 2020 - Taylor & Francis
The exchange is critical for designing high-performance Nd–Fe–B permanent magnets.
Here we demonstrate through multiscale simulations that the exchange in Nd–Fe–B …

Computational study on microstructure evolution and magnetic property of laser additively manufactured magnetic materials

M Yi, BX Xu, O Gutfleisch - Computational Mechanics, 2019 - Springer
Additive manufacturing offers an unprecedented opportunity for the quick production of
complex shaped parts directly from a powder precursor. But its application to functional …

Quantitative identification of constituent phases in a Nd-Fe-B-Cu sintered magnet and temperature dependent change of electron density of Nd2Fe14B studied by …

H Okazaki, D Billington, N Tsuji, W Ueno, Y Kotani… - Acta Materialia, 2019 - Elsevier
We have measured the temperature dependent XRD profiles of an isotropic Nd-Fe-B-Cu
sintered magnet during the annealing process. Through Rietveld refinement, we …

Borderline Magnetism: How Adding to Paramagnetic Makes a 450-K Ferromagnet with Large Magnetic Anisotropy

T Pandey, DS Parker - Physical Review Applied, 2018 - APS
A recent experimental study [Phys. Rev. Appl. 9, 024023 (2018)] on paramagnetic Ce Co 3
finds that magnesium alloying induces a ferromagnetic transition with intrinsic properties …