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)

Share

COinS