Charge screening and magnetic anisotropy in RCo5 compounds

TL;DR

This paper investigates how conduction electron screening affects magnetic anisotropy in RCo5 compounds, highlighting the importance of non-uniform electron distribution and Fermi surface anisotropy in determining magnetic properties.

Contribution

It introduces a detailed analysis of screening effects, emphasizing the role of electron distribution derivatives and Fermi surface anisotropy on magnetic anisotropy in RCo5 compounds.

Findings

Non-uniform screening electron distribution significantly influences magnetic anisotropy.

Anisotropy of the Fermi surface affects the sign of magnetic anisotropy.

Screening effects are crucial for understanding magnetic behavior in RCo5 compounds.

Abstract

An analysis of magnetic anisotropy in RCo5 compounds is performed with account of screening of ion point charges by conduction electrons. A crucial role of non-uniform distribution of screening electrons (the terms containing derivatives of charge density) is demonstrated. Influence of anisotropy of screening, that is connected with the anisotropy of the Fermi surface, on the magnetic anisotropy sign is discussed.