Properties of the Semi Spin Glass Ground State of Garnets

• Authors: A. Koper , A. Lehmann-Szweykowska , M. Thomas , R. Wojciechowski
• Languages of publication: EN

Abstracts

EN

A strong magnetic ordering response to valence-uncompensated doping observed experimentally in yttrium iron garnet, indicates the importance of a thorough analysis of the problem. Within the framework of the classical two-sublattice Heisenberg model the position on the ground state phase diagram, corresponding to the experimentally found values of the superexchange parameters of yttrium iron garnet, turns out to lie close to the semi spin glass region. Thus, in this paper, the magnetic structure factor, the spectrum of magnetic excitations, the density of states and a magnetic contribution to the specific heat, are calculated and discussed.

Keywords

EN

75.10.Hk; 75.50.Bb; 81.30.Bx

Discipline

• 75.10.Hk: Classical spin models
• 75.50.Bb: Fe and its alloys
• 81.30.Bx: Phase diagrams of metals, alloys, and oxides

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1994
• Volume: 85
• Issue: 1
• Pages: 233-236

Dates

published

1994-01

Contributors

author

A. Koper

• Solid State Theory Division, Institute of Physics, A. Mickiewicz University, Grunwaldzka 6, 60-780 Poznań, Poland

author

A. Lehmann-Szweykowska

• Solid State Theory Division, Institute of Physics, A. Mickiewicz University, Grunwaldzka 6, 60-780 Poznań, Poland

author

M. Thomas

• Solid State Theory Division, Institute of Physics, A. Mickiewicz University, Grunwaldzka 6, 60-780 Poznań, Poland

author

R. Wojciechowski

• Solid State Theory Division, Institute of Physics, A. Mickiewicz University, Grunwaldzka 6, 60-780 Poznań, Poland

Identifiers

DOI

10.12693/APhysPolA.85.233