The Effect of Mechanical Stresses on the Coercive Force of the System of Two-Phase Interacting Nanoparticles

Leonid L. Afremov; Ilia G. Iliushin

doi:10.4028/www.scientific.net/SSP.215.89

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HomeSolid State PhenomenaSolid State Phenomena Vol. 215The Effect of Mechanical Stresses on the Coercive...

The Effect of Mechanical Stresses on the Coercive Force of the System of Two-Phase Interacting Nanoparticles

Abstract:

Within the framework of the two-phase grain model (by the example of γ-Fe203 cobalt coated particles) a theoretical analysis of the effect of uniaxial mechanical stresses on the magnetization of the system of hetero-phase interacting nanoparticle was held. It is shown that stretching leads to reduction when compression increases the coercive force Hc and doesnt change the residual saturation magnetization Irs of the system of interacting particles. "Smoothing" the hysteresis loop and "lowering" the magnetization curve, the magnetostatic interaction between particles decreases both Hc, and Irs, giving the fact that hysteresis characteristics of an ensemble of interacting nanoparticles change much more in stretching than in compression.

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Periodical:

Solid State Phenomena (Volume 215)

Pages:

89-94

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.215.89

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Online since:

April 2014

Authors:

Leonid L. Afremov*, Ilia G. Iliushin

Keywords:

Coercive Force, Core-Shell Particles, Critical Field, Hysteresis, Interphase Exchange Interaction, Magnetic State, Mechanical Stresses, Superparamagnetic Nanoparticles

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