Larmor Precession and Debye Relaxation of Single-Domain Magnetic Nanoparticles
Joint Authors
Hakl, J.
Jánosfalvi, Zs.
de Châtel, P. F.
Source
Advances in Condensed Matter Physics
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-01-23
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
The numerous phenomenological equations used in the study of the behaviour of single-domain magnetic nanoparticles are described and some issues clarified by means of qualitative comparison.
To enable a quantitative application of the model based on the Debye (exponential) relaxation and the torque driving the Larmor precession, we present analytical solutions for the steady states in presence of circularly and linearly polarized AC magnetic fields.
Using the exact analytical solutions, we can confirm the insight that underlies Rosensweig’s introduction of the “chord” susceptibility for an approximate calculation of the losses.
As an important consequence, it can also explain experiments, where power dissipation for both fields was found to be identical in “root mean square” sense.
We also find that this approximation provides satisfactory numerical accuracy only up to magnetic fields for which the argument of the Langevin function reaches the value 2.8.
American Psychological Association (APA)
Jánosfalvi, Zs.& Hakl, J.& de Châtel, P. F.. 2014. Larmor Precession and Debye Relaxation of Single-Domain Magnetic Nanoparticles. Advances in Condensed Matter Physics،Vol. 2014, no. 2014, pp.1-10.
https://search.emarefa.net/detail/BIM-447613
Modern Language Association (MLA)
Jánosfalvi, Zs.…[et al.]. Larmor Precession and Debye Relaxation of Single-Domain Magnetic Nanoparticles. Advances in Condensed Matter Physics No. 2014 (2014), pp.1-10.
https://search.emarefa.net/detail/BIM-447613
American Medical Association (AMA)
Jánosfalvi, Zs.& Hakl, J.& de Châtel, P. F.. Larmor Precession and Debye Relaxation of Single-Domain Magnetic Nanoparticles. Advances in Condensed Matter Physics. 2014. Vol. 2014, no. 2014, pp.1-10.
https://search.emarefa.net/detail/BIM-447613
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-447613