Excitation Spectrum of the Néel Ensemble of Antiferromagnetic Nanoparticles as Revealed in Mössbauer Spectroscopy
Author
Source
Advances in Condensed Matter Physics
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-15, 15 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-06-11
Country of Publication
Egypt
No. of Pages
15
Main Subjects
Abstract EN
The excitation spectrum of the Néel ensemble of antiferromagnetic nanoparticles with uncompensated magnetic moment is deduced in the two-sublattice approximation following the exact solution of equations of motion for magnetizations of sublattices.
This excitation spectrum represents four excitation branches corresponding to the normal modes of self-consistent regular precession of magnetizations of sublattices and the continuous spectrum of nutations of magnetizations accompanying these normal modes.
Nontrivial shape of the excitation spectrum as a function of the value of uncompensated magnetic moment corresponds completely to the quantum-mechanical calculations earlier performed.
This approach allows one to describe also Mössbauer absorption spectra of slowly relaxing antiferromagnetic and ferrimagnetic nanoparticles and, in particular, to give a phenomenological interpretation of macroscopic quantum effects observed earlier in experimental absorption spectra and described within the quantum-mechanical representation.
American Psychological Association (APA)
Chuev, Mikhail A.. 2017. Excitation Spectrum of the Néel Ensemble of Antiferromagnetic Nanoparticles as Revealed in Mössbauer Spectroscopy. Advances in Condensed Matter Physics،Vol. 2017, no. 2017, pp.1-15.
https://search.emarefa.net/detail/BIM-1121625
Modern Language Association (MLA)
Chuev, Mikhail A.. Excitation Spectrum of the Néel Ensemble of Antiferromagnetic Nanoparticles as Revealed in Mössbauer Spectroscopy. Advances in Condensed Matter Physics No. 2017 (2017), pp.1-15.
https://search.emarefa.net/detail/BIM-1121625
American Medical Association (AMA)
Chuev, Mikhail A.. Excitation Spectrum of the Néel Ensemble of Antiferromagnetic Nanoparticles as Revealed in Mössbauer Spectroscopy. Advances in Condensed Matter Physics. 2017. Vol. 2017, no. 2017, pp.1-15.
https://search.emarefa.net/detail/BIM-1121625
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1121625