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- Title
Atomic Migration and Ordering of Binary Ferromagnetic Intermetallic L1<sub>0</sub> Phases and Influences of Alloying Elements and Electric Fields.
- Authors
Urban, Daniel F.; Sell, Patrick; Elsässer, Christian
- Abstract
The ordered body‐centered tetragonal intermetallic L10 phase of FeNi is a promising candidate for high‐performance permanent magnets without rare‐earth elements. However, on earth FeNi is found naturally only in the disordered face‐centered‐cubic A1 phase. Herein, the atomic migration and ordering processes in binary intermetallic L10 phases are investigated within the framework of density‐functional theory. The main objectives are 1) to develop a thorough understanding of the thermally activated diffusion processes at the atomic scale and 2) to make a critical assessment in how far electric field and current effects can be effective means for an enhanced hardening‐by‐ordering of disordered, soft‐ferromagnetic alloys. The scope is extended from FeNi to the hard‐ferromagnetic L10 phases of FePt, FePd, MnAl, and MnGa as well as ternary Fe(Pt,Ni) alloys. These materials cover a wide range of thermal‐ordering time scales and related experimental feasibility.
- Subjects
ELECTRIC fields; ELECTRIC field effects; PERMANENT magnets; ALLOYS; LEAD titanate; ORDER picking systems
- Publication
Advanced Engineering Materials, 2023, Vol 25, Issue 18, p1
- ISSN
1438-1656
- Publication type
Article
- DOI
10.1002/adem.202201864