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