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Title: Magnons and Magnon-Phonon Interactions in Iron

Abstract

First-principle studies of magnons and magnon-phonon interactions are carried out in bcc and fcc iron in the adiabatic approximation. It is shown that the phonons have a minor effect on magnons in bcc Fe and thus the lattice vibrations make a small contribution to the Curie temperature. fcc Fe is unstable against magnon excitations but the phonons seem to reduce this instability. The magnon-phonon interactions are analyzed in terms of the pair-exchange interaction variations as functions of the interatomic distances. The fcc results suggest that metastable fcc Fe in thin-film or nanostructure form should have interesting magnetic properties. {copyright} {ital 1999} {ital The American Physical Society}

Authors:
;  [1]
  1. Behlen Laboratory of Physics and Center for Materials Research and Analysis, University of Nebraska, Lincoln, Nebraska 68588-0111 (United States)
Publication Date:
OSTI Identifier:
686473
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 83; Journal Issue: 10; Other Information: PBD: Sep 1999
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; IRON; MAGNONS; PHONONS; LATTICE VIBRATIONS; ADIABATIC APPROXIMATION; CURIE POINT; INTERATOMIC DISTANCES; INSTABILITY

Citation Formats

Sabiryanov, R.F., and Jaswal, S.S. Magnons and Magnon-Phonon Interactions in Iron. United States: N. p., 1999. Web. doi:10.1103/PhysRevLett.83.2062.
Sabiryanov, R.F., & Jaswal, S.S. Magnons and Magnon-Phonon Interactions in Iron. United States. doi:10.1103/PhysRevLett.83.2062.
Sabiryanov, R.F., and Jaswal, S.S. Wed . "Magnons and Magnon-Phonon Interactions in Iron". United States. doi:10.1103/PhysRevLett.83.2062.
@article{osti_686473,
title = {Magnons and Magnon-Phonon Interactions in Iron},
author = {Sabiryanov, R.F. and Jaswal, S.S.},
abstractNote = {First-principle studies of magnons and magnon-phonon interactions are carried out in bcc and fcc iron in the adiabatic approximation. It is shown that the phonons have a minor effect on magnons in bcc Fe and thus the lattice vibrations make a small contribution to the Curie temperature. fcc Fe is unstable against magnon excitations but the phonons seem to reduce this instability. The magnon-phonon interactions are analyzed in terms of the pair-exchange interaction variations as functions of the interatomic distances. The fcc results suggest that metastable fcc Fe in thin-film or nanostructure form should have interesting magnetic properties. {copyright} {ital 1999} {ital The American Physical Society}},
doi = {10.1103/PhysRevLett.83.2062},
journal = {Physical Review Letters},
number = 10,
volume = 83,
place = {United States},
year = {1999},
month = {9}
}