Magnetic Anisotropy and Exchange Interactions in R_{n+1}Co_{3n+5}B_{2}n Compounds

• Authors: A. Kowalczyk
• Languages of publication: EN

Abstracts

EN

The individual Co site contributions to the magnetocrystalline anisotropy in RCo_{5}, RCo_{4}B and R_{3}Co_{11}B_{4} compounds have been studied. An analysis is given of the room temperature anisotropy constants of these compounds by using a model of Streever. The values of the rare earth-transition metal exchange coupling J_{RCo}/k_{B} derived by mean field analysis of the Curie temperatures are -11.2 K, -15 K and -20.9 K, respectively. In general, a decrease in J_{RCo}/k_{B} with increasing Co concentration is observed.

Keywords

EN

75.30.Gw; 75.30.Et

Discipline

• 75.30.Et: Exchange and superexchange interactions(see also 71.70.Gm Exchange interactions)
• 75.30.Gw: Magnetic anisotropy

• Journal: Acta Physica Polonica A
• Year: 1994
• Volume: 85
• Issue: 3
• Pages: 623-626

Dates

published

1994-03

received

1993-10-01

Contributors

author

A. Kowalczyk

• Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17/19, 60-179 Poznań, Poland

Identifiers

DOI

10.12693/APhysPolA.85.623