Scripta Materialia 2018-03-02

Maximum performance of permanent magnet materials

H. Akai

Index: 10.1016/j.scriptamat.2018.02.006

Full Text: HTML

Abstract

Calculations based on density functional theory conclude that the plausible upper limits of saturation magnetic polarization, magnetic transition temperature, and the magnetocrystalline anisotropy constant of permanent magnet materials could be ∼2.7 T, ∼2000 K, and ∼1000 MJ m−3, respectively. It is suggested that a possible strategy to reach these values for high-performance permanent magnets is to design Fe-based magnets containing a small amount of light rare earth elements, together with some additional elements including V, Cr, Co, Ni, and possibly typical elements as interstitials. The idea of creating high-performance permanent magnets without rare earth elements can be dispensed with.

Latest Articles:

Preface to the viewpoint set on: Permanent magnets and underlining material science

2018-03-02

[10.1016/j.scriptamat.2018.02.033]

Computational phase diagrams for the Nd-based magnets based on the combined ab initio/CALPHAD approach

2018-02-09

[10.1016/j.scriptamat.2018.01.030]

Heavy rare earth free, free rare earth and rare earth free magnets - Vision and reality

2018-02-06

[10.1016/j.scriptamat.2018.01.032]

Perspectives of stochastic micromagnetism of Nd2Fe14B and computation of thermally activated reversal process

2017-12-26

[10.1016/j.scriptamat.2017.11.012]

Atomic worlds: Current state and future of atom probe tomography in geoscience

2017-11-29

[10.1016/j.scriptamat.2017.11.014]

More Articles...