Dynamic magnetic hysteresis and nonlinear susceptibility of antiferromagnetic nanoparticles

The nonlinear ac stationary response of antiferromagnetic nanoparticles subjected to both external ac and dc fields of arbitrary strength and orientation is investigated using Brown's continuous diffusion model. The nonlinear complex susceptibility and dynamic magnetic hysteresis (DMH) loops of...

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Bibliographic Details
Published in:Journal of applied physics 2016-08, Vol.120 (5)
Main Authors: Kalmykov, Yuri P., Ouari, Bachir, Titov, Serguey V.
Format: Article
Language:English
Subjects:
Anisotropy
Antiferromagnetism
Applied physics
Damping
Hysteresis
Magnetic permeability
Nanoparticles
Nonlinear response
Physics
Power loss
Stationary response
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Summary:The nonlinear ac stationary response of antiferromagnetic nanoparticles subjected to both external ac and dc fields of arbitrary strength and orientation is investigated using Brown's continuous diffusion model. The nonlinear complex susceptibility and dynamic magnetic hysteresis (DMH) loops of an individual antiferromagnetic nanoparticle are evaluated and compared with the linear regime for extensive ranges of the anisotropy, the ac and dc magnetic fields, damping, and the specific antiferromagnetic parameter. It is shown that the shape and area of the DMH loops of antiferromagnetic particles are substantially altered by applying a dc field that permits tuning of the specific magnetic power loss in the nanoparticles.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.4959816