Current progress and future challenges in rare-earth-free permanent magnets

J Cui, M Kramer, L Zhou, F Liu, A Gabay… - Acta Materialia, 2018 - Elsevier
Permanent magnets (PM) are critical components for electric motors and power generators.
Key properties of permanent magnets, especially coercivity and remanent magnetization …

Rare-earth-free permanent magnets: the past and future

J Mohapatra, JP Liu - Handbook of magnetic materials, 2018 - Elsevier
Permanent magnets are essential components in everyday technologies, including in
energy conversion and transportation. Since the discovery of rare-earth-based permanent …

Direct Formation of Hard‐Magnetic Tetrataenite in Bulk Alloy Castings

YP Ivanov, B Sarac, SV Ketov, J Eckert… - Advanced …, 2023 - Wiley Online Library
Currently, predominant high‐performance permanent magnets contain rare‐earth elements.
In the search for rare‐earth‐free alternates, body‐centered tetragonal Fe–Ni is notable. The …

Micromagnetics of rare-earth efficient permanent magnets

J Fischbacher, A Kovacs, M Gusenbauer… - Journal of Physics D …, 2018 - iopscience.iop.org
The development of permanent magnets containing less or no rare-earth elements is linked
to profound knowledge of the coercivity mechanism. Prerequisites for a promising …

[HTML][HTML] Revisiting Néel 60 years on: The magnetic anisotropy of L10 FeNi (tetrataenite)

CD Woodgate, CE Patrick, LH Lewis… - Journal of Applied …, 2023 - pubs.aip.org
The magnetocrystalline anisotropy energy of atomically ordered L1 0 FeNi (the meteoritic
mineral tetrataenite) is studied within a first-principles electronic structure framework. Two …

DC bias characteristic enhancement of the powder core by using densified submicron sized FeNi particles through spray pyrolysis

EL Septiani, J Kikkawa, KLA Cao, T Hirano… - Journal of Materials …, 2022 - pubs.rsc.org
The powder core type of inductor has become a promising component of a high-power DC–
DC converter. The inductor consists of a powder core, a packing of primary (coarse) and …

Accelerating Nature: Induced Atomic Order in Equiatomic FeNi

LH Lewis, PS Stamenov - Advanced Science, 2024 - Wiley Online Library
The production of locally atomically ordered FeNi (known by its meteoric mineral name,
tetrataenite) is confirmed in bulk samples by simultaneous conversion X‐ray and …

Fabrication of L10-ordered FeNi films by denitriding FeNiN (001) and FeNiN (110) films

K Ito, T Ichimura, M Hayashida, T Nishio, S Goto… - Journal of Alloys and …, 2023 - Elsevier
Abstract L1 0-ordered FeNi (L1 0-FeNi) has attracted attention as a rare-earth-free material
with large uniaxial magnetic anisotropy energy (K u). In this study, FeNiN (001) and FeNiN …

Finite-temperature second-order perturbation analysis of magnetocrystalline anisotropy energy of -type ordered alloys

S Yamashita, A Sakuma - Physical Review B, 2023 - APS
We present a finite-temperature second-order perturbation method incorporating spin-orbit
coupling to investigate the temperature-dependent site-resolved contributions to the …

Prospect and status of iron-based rare-earth-free permanent magnetic materials

D Li, Y Li, D Pan, Z Zhang, CJ Choi - Journal of Magnetism and Magnetic …, 2019 - Elsevier
With the advent of high performance permanent magnets based on the rare-earth (RE)
elements such as Sm-Co, Nd-Fe-B alloys in 1980s, the application areas have been …