Publication Date
10-22-2020
Department
Ames Laboratory; Physics and Astronomy
Campus Units
Ames Laboratory, Physics and Astronomy
OSTI ID+
1706639
Report Number
IS-J 10353
DOI
10.1103/PhysRevB.102.134429
Journal Title
Physical Review B
Volume Number
102
Issue Number
13
First Page
134429
Abstract
We propose a scheme of decomposition of the total relativistic energy in solids to intra- and interatomic contributions. The method is based on a site variation of such fundamental constant as the speed of light. As a practical illustration of the method, we tested such decomposition in the case of a spin-orbit interaction variation for the decomposition of the magnetic anisotropy energy (MAE) in CoPt. We further studied the α′′−Fe16N2 magnet doped by Bi, Sb, Co, and Pt atoms. It was found that the addition of Pt atoms can enhance the MAE by as much as five times while Bi and Sb substitutions double the total MAE. Using the proposed technique, we demonstrate the spatial distribution of these enhancements. Our studies also suggest that Sb, Pt, and Co substitutions could be synthesized by experiments.
DOE Contract Number(s)
AC02-07CH11358; EAR-1918134; EAR-1918126; DMR-1729677
Language
en
Publisher
Iowa State University Digital Repository, Ames IA (United States)
