Premium
The Spin‐Wave Theory of Electron and s‐f‐Exchange Magnetostriction in the Rare Earth Metals
Author(s) -
Sadreev A. F.,
Sandalov I. S.,
Podmarkov A. N.
Publication year - 1983
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/pssb.2221200139
Subject(s) - zeeman effect , magnetostriction , electron , condensed matter physics , anisotropy , rare earth , zeeman energy , exchange interaction , physics , anisotropy energy , electron exchange , spin (aerodynamics) , magnetic field , field (mathematics) , atomic physics , chemistry , magnetic anisotropy , quantum mechanics , ferromagnetism , magnetization , thermodynamics , mineralogy , mathematics , pure mathematics
The magnetostriction phenomena are considered in anisotropic rare earth metals. Two mechanisms of the phenomena are investigated. The first is the s‐f‐exchange due to a distortion of the conduction electron wave functions relative to the localized f‐functions. The second is caused by a change of the single‐electron energy. It is shown for kT « Δ a , gμ B h , where Δ a is the anisotropy energy and gμ B h the Zeeman energy, that the electron striction is important to give a linear dependence on the external magnetic field. Otherwise the usual exchange striction can be used. The second mechanism is affected by the change of the single‐electron energy.