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Properties of Standing Spin Waves in a Thin Film of Field‐Induced Metamagnet with Modified Surface Exchange Interactions
Author(s) -
Rudziński W.,
Maciejewski W.
Publication year - 1997
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/1521-3951(199702)199:2<525::aid-pssb525>3.0.co;2-1
Subject(s) - spin wave , condensed matter physics , dispersion (optics) , exchange interaction , spin (aerodynamics) , paramagnetism , standing wave , materials science , field (mathematics) , thin film , surface (topology) , dispersion relation , phase (matter) , stability (learning theory) , physics , optics , nanotechnology , thermodynamics , ferromagnetism , mathematics , quantum mechanics , computer science , geometry , pure mathematics , machine learning
Characteristic equations and dispersion relations derived in the first paper of this series are applied to investigate the conditions for the occurrence of different types of standing spin waves in the FeBr 2 field‐induced metamagnetic thin film with (001) surfaces. The spin‐wave properties and stability conditions of the system in the paramagnetic phase are examined numerically for modified surface exchange interactions. The essential influence of the film thickness as well as modifications of surface disturbances on the behaviour of standing spin waves is illustrated in stability diagrams. The obtained results enabled the determination of the condition for the appearance of various spin‐wave features, the limits on the values of surface exchange interaction parameters and consequently, the range of physical solutions for the considered system.