scholarly journals Relevance of 4f-3d exchange to finite-temperature magnetism of rare-earth permanent magnets: An ab-initio-based spin model approach for NdFe12N

2016 ◽  
Vol 119 (21) ◽  
pp. 213901 ◽  
Author(s):  
Munehisa Matsumoto ◽  
Hisazumi Akai ◽  
Yosuke Harashima ◽  
Shotaro Doi ◽  
Takashi Miyake
Keyword(s):  
Rare Earth ◽  
Ab Initio ◽  
Finite Temperature ◽  
Permanent Magnets ◽  
Spin Model ◽  
Model Approach

scholarly journals Finite-temperature magnetic properties of Sm2Fe17Nx using an ab initio effective spin model

2020 ◽  
Vol 102 (21) ◽  
Author(s):  
Shogo Yamashita ◽  
Daiki Suzuki ◽  
Takuya Yoshioka ◽  
Hiroki Tsuchiura ◽  
Pavel Novák
Keyword(s):  
Magnetic Properties ◽  
Ab Initio ◽  
Finite Temperature ◽  
Spin Model ◽  
Effective Spin

L10 rare-earth-free permanent magnets: The effects of twinning versus dislocations in Mn-Al magnets

2020 ◽  
Vol 4 (9) ◽  
Author(s):  
Yuxiao Jia ◽  
Yuye Wu ◽  
Shuang Zhao ◽  
Shulan Zuo ◽  
Konstantin P. Skokov ◽  
...  
Keyword(s):  
Rare Earth ◽  
Permanent Magnets

scholarly journals Special Issue: Advances in Computational Electromagnetics

2021 ◽  
Vol 7 (6) ◽  
pp. 89
Author(s):  
Valerio De Santis
Keyword(s):  
Rare Earth ◽  
Magnetic Materials ◽  
Permanent Magnets ◽  
Computational Electromagnetics ◽  
Superconducting Materials ◽  
Special Issue ◽  
Full Characterization ◽  
Recent Advances

Recent advances in computational electromagnetics (CEMs) have made the full characterization of complex magnetic materials possible, such as superconducting materials, composite or nanomaterials, rare-earth free permanent magnets, etc [...]

scholarly journals Design of External Rotor Ferrite-Assisted Synchronous Reluctance Motor for High Power Density

2021 ◽  
Vol 11 (7) ◽  
pp. 3102
Author(s):  
Md. Zakirul Islam ◽  
Seungdeog Choi ◽  
Malik E. Elbuluk ◽  
Sai Sudheer Reddy Bonthu ◽  
Akm Arafat ◽  
...  
Keyword(s):  
Rare Earth ◽  
Permanent Magnets ◽  
Design Procedure ◽  
Lumped Parameter Model ◽  
High Power Density ◽  
Analytical Design ◽  
Synchronous Reluctance Motor ◽  
Lumped Parameter ◽  
Reluctance Motor ◽  
External Rotor

The rare-earth (RE) permanent magnets (PM) have been increasingly adopted in traction motor application. However, the RE PM is expensive, less abundant, and has cost uncertainties due to limited market suppliers. This paper presents a new design of a RE-free five-phase ferrite permanent magnet-assisted synchronous reluctance motor (Fe-PMaSynRM) with the external rotor architecture with a high saliency ratio. In such architecture, the low magnetic coercivity and demagnetization risk of the ferrite PM is the challenge. This limits the number of flux barriers, saliency ratio, and reluctance torque. A precise analytical design procedure of rotor and stator configuration is presented with differential evolution numerical optimizations by utilizing a lumped parameter model. A 3.7 kW prototype is fabricated to validate the proposed idea.

Using Chlorine Gas to Recover Rare Earth Metals from End-of-Life Permanent Magnets

JOM ◽  
2021 ◽  
Author(s):  
Valery Kaplan ◽  
Ellen Wachtel ◽  
Konstantin Gartsman ◽  
Yishay Feldman ◽  
Kyoung-Tae Park ◽  
...  
Keyword(s):  
Rare Earth ◽  
End Of Life ◽  
Permanent Magnets ◽  
Rare Earth Metals ◽  
Chlorine Gas

scholarly journals Ab Initio Molecular Dynamical Investigation of the Finite Temperature Behavior of the Tetrahedral Au19and Au20Clusters

2007 ◽  
Vol 111 (42) ◽  
pp. 10769-10775 ◽  
Author(s):  
Sailaja Krishnamurty ◽  
Ghazal S. Shafai ◽  
D. G. Kanhere ◽  
B. Soulé de Bas ◽  
M. J. Ford
Keyword(s):  
Ab Initio ◽  
Finite Temperature ◽  
Temperature Behavior
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