Magnetic modes coupling in a fcc Bravais lattice
Autor: | R. Plumier, M. Sougi |
---|---|
Rok vydání: | 1992 |
Předmět: | |
Zdroj: | Journal of Magnetism and Magnetic Materials. :899-900 |
ISSN: | 0304-8853 |
DOI: | 10.1016/0304-8853(92)90414-j |
Popis: | Magnetic structures are studied in the case of a Bravais lattice when biquadratic interactions jS 4 exist in addition to the bilinear ones JS 2 between first and second nearest neighbours. Modes coupling is found to occur even at small jS 2 / J ratio values. We derive the susceptibilities of single and coupled modes and show that, when it exists, coupling is maintained only up to a critical field. |
Databáze: | OpenAIRE |
Externí odkaz: |