Structure and Magneto-Optical Properties of Ferrites

A special issue of Magnetochemistry (ISSN 2312-7481). This special issue belongs to the section "Magnetic Materials".

Deadline for manuscript submissions: closed (31 March 2022) | Viewed by 1973

Special Issue Editor


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Guest Editor
Department of Theoretical and Mathematical Physics, Ural Federal University, 620002 Yekaterinburg, Russia
Interests: theory of strongly correlated electron systems, magnetic, optical, and magneto-optical properties of ferrites

Special Issue Information

Dear Colleague,

Over the past 175 years since Michael Faraday's discovery of the relation between light and electromagnetism, magneto-optics has become a broad field of fundamental and applied research. On the one hand, magneto-optics is aimed at the experimental study of the electronic and magnetic structure, magnetic anisotropy, magnetic phase transitions, spin-orbital structure, exchange and exchange-relativistic effects, and on the other hand, the search for new materials with high magneto-optical characteristics and the improvement and development of new magneto-optical applications.

Various ferrites, especially bismuth-substituted ferrites, occupy a special place among magneto-optical materials, being one of the main objects of fundamental research and basic materials for creating various devices of applied magneto-optics from magneto-optical sensors and visualizers to the terahertz isolators, circulators, magneto-optical modulators, and nonreciprocal elements of the integrated optics.

This Special Issue of Magnetochemistry aims to publish a collection of research contributions illustrating the recent achievements in all aspects of the ferrite’s magneto-optics, especially those related to their structure.

Prof. Dr. Alexander S. Moskvin
Guest Editor

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Keywords

  • circular and linear magneto-optics of ferrites
  • magneto-optical properties of Bi-substituted ferrites-garnets
  • mechanisms of magneto-optical effects in ferrites
  • magneto-optical properties of 4f-4f transitions
  • inverse Faraday effect
  • X-ray magnetic circular and linear dichroism
  • magneto-optical effects in nanostructures
  • applied magneto-optics of ferrites

Published Papers (1 paper)

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Review

32 pages, 710 KiB  
Review
Charge Transfer Transitions and Circular Magnetooptics in Ferrites
by Alexander Moskvin
Magnetochemistry 2022, 8(8), 81; https://doi.org/10.3390/magnetochemistry8080081 - 28 Jul 2022
Cited by 1 | Viewed by 1551
Abstract
The concept of charge transfer (CT) transitions in ferrites is based on the cluster approach and takes into account the relevant interactions, such as the low-symmetry crystal field, spin–orbital, Zeeman, exchange and exchange-relativistic interactions. For all its simplicity, this concept yields a reliable [...] Read more.
The concept of charge transfer (CT) transitions in ferrites is based on the cluster approach and takes into account the relevant interactions, such as the low-symmetry crystal field, spin–orbital, Zeeman, exchange and exchange-relativistic interactions. For all its simplicity, this concept yields a reliable qualitative and quantitative microscopic explanation of spectral, concentration, temperature and field dependencies of optic and magneto-optic properties ranging from the isotropic absorption and optical anisotropy to circular magneto-optics. In this review paper, starting with a critical analysis of the fundamental shortcomings of the “first-principles” density functional theory (DFT-based) band theory, we present the main ideas and techniques of the cluster theory of the CT transitions to be main contributors to circular magneto-optics of ferrites. Numerous examples of comparison of cluster theory with experimental data for orthoferrites, iron garnets and other ferrites are given. Full article
(This article belongs to the Special Issue Structure and Magneto-Optical Properties of Ferrites)
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