Abstract − Analytical Sciences, 35(9), 951 (2019).
Magnetic Orientational Linear Dichroism Spectra of Magnetic Nanoparticles as a Probe of the Dispersion State
Hitoshi WATARAI, Sana SUBHAN MEMON SAKURAI, and Hana SUBHAN MEMON SAKURAI
Institute for NanoScience Design, Osaka University, Toyonaka, Osaka 560-8531, Japan
Magnetic orientational linear dichroism (MOLD) spectra of magnetic nanoparticles (MNPs) in the UV-Vis wavelength region were found to be useful as a probe to detect changes of the dispersion state due to a restriction of the rotational Brownian motion of MNPs; a change of the medium from liquid to resin and the formation of agglomerates in solution. The magnetic-field dependence of MOLD was analyzed by using the Langevin equation, which gave information about the magnetic moment of MNPs.
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