Magnitoopticheskaya kerr-spektroskopiya nanokompozitov

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Magnetooptical spectroscopy is an effective method for studying the magnetic microstructure of homogeneous and heterogeneous magnets. This review is devoted to analysis of numerous factors affecting the intensity and spectral dependence of a magnetooptical signal of the equatorial Kerr effect in nanocomposites “ferromagnetic metal–dielectric” in the visible and near infrared spectral regions. Examples of the influence of the metal concentration, nanoparticle size and shape, the substrate, the material of the dielectric, the amorphization of grains, the deposition method, and other factors on the magnetooptical spectrum are considered. The differences in the magnetooptical spectra for the superparamagnetic, superferromagnetic, and ferromagnetic states are demonstrated. It is noted that in the presence of fractions with different field dependences of the magnetization in a nanocomposite, the magnetooptical signal is not proportional to the total magnetization. Examples of enhancement and sign inversion of the magnetooptical signal in nanocomposites are considered. The possibility of the description of magnetooptical spectra using the methods of the effective medium (the Bruggeman method and the Maxwell–Garnett symmetrized approximation) is discussed.

作者简介

E. Gan'shina

Physics Faculty, Moscow State University

Email: eagan@mail.ru
119991, Moscow, Russia

V. Garshin

Physics Faculty, Moscow State University

Email: eagan@mail.ru
119991, Moscow, Russia

N. Perova

Physics Faculty, Moscow State University

Email: eagan@mail.ru
119991, Moscow, Russia

I. Pripechenkov

Physics Faculty, Moscow State University

Email: eagan@mail.ru
119991, Moscow, Russia

A. Yurasov

Russian Technological University MIREA

Email: eagan@mail.ru
119454, Moscow, Russia

M. Yashin

Russian Technological University MIREA

Email: eagan@mail.ru
119454, Moscow, Russia

V. Ryl'kov

State Research Center “Kurchatov Institute”; Institute of Theoretical and Applied Electrodynamics, Russian Academy of Sciences

Email: eagan@mail.ru
123182, Moscow, Russia; 125412, Moscow, Russia

A. Granovskiy

Physics Faculty, Moscow State University; Institute of Theoretical and Applied Electrodynamics, Russian Academy of Sciences

编辑信件的主要联系方式.
Email: granov@magn.ru
119991, Moscow, Russia; 125412, Moscow, Russia

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