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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(199701)199:1<217::aid-pssb217>3.0.co;2-b
Subject(s) - condensed matter physics , antiferromagnetism , ferromagnetism , spin wave , anisotropy , coupling (piping) , spin (aerodynamics) , materials science , exchange interaction , field (mathematics) , thin film , phase (matter) , paramagnetism , exchange bias , magnetic field , magnetic anisotropy , physics , magnetization , nanotechnology , optics , quantum mechanics , thermodynamics , mathematics , pure mathematics , metallurgy
Properties of surface spin waves are studied in a thin film of the field‐induced metamagnet which consists of ferromagnetically ordered layers parallel to the (001) plane, with intralayer ferromagnetic exchange coupling, interlayer antiferromagnetic exchange coupling as well as a strong three‐ion anisotropy. A special Rutherford mathematical procedure for the description of the surface properties of finite crystal structures is generalized and applied to solve the eigenvalue problem for standing spin waves existing in the paramagnetic phase of the metamagnet at low temperatures. Also, by allowing the surface exchange parameters to deviate from the bulk values the stability conditions for the system are taken under theoretical discussion.