Open AccessField dependence of magnetooptic effect in magnetic colloid with superparamagnetic particles
Author(s) -
Constantine V. Yerin,
V. I. Vivchar
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1389/1/012055
Subject(s) - birefringence , condensed matter physics , superparamagnetism , materials science , magnetic field , colloid , ferrofluid , magnetic moment , dispersity , particle (ecology) , magnetization , particle size , magnetic nanoparticles , optics , nuclear magnetic resonance , chemistry , physics , nanoparticle , nanotechnology , oceanography , quantum mechanics , geology , polymer chemistry
The field dependences of magnetic birefringence in two samples of magnetic fluid with different average particle size are investigated. It is established that the dependences of magnetic birefringence are parabolic. Significant difference in experimental data and calculations using the single-particle birefringence model was found. The experimental results are interpreted by the polydispersity of the particles in the samples, as well as by the presence of small aggregates with a partially compensated magnetic moment.