Complex Faraday Effect in Cubic Magnets with Jahn-Teller Clusters

L. D. Falkovskaya; A. Ya Fishman; V. Ya Mitrofanov; M. A. Ivanov; B. S. Tsukerblat

doi:10.1524/zpch.1997.201.Part_1_2.231

Complex Faraday Effect in Cubic Magnets with Jahn-Teller Clusters

L. D. Falkovskaya, A. Ya Fishman, V. Ya Mitrofanov, M. A. Ivanov, B. S. Tsukerblat

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3 Scopus citations

Abstract

A theoretical investigation is made of the dynamic tensor of the dielectric permittivity ∈_ij(ω) in magnetic crystals with Jahn-Teller (JT) clusters of 3d-mixed valence ions. It is shown that coexistence in such clusters of an appreciable dipole and unquenched orbital momenta leads to an anomalous growth of antisymmetric tensor components and Faraday rotation (FR) and magnetic circular dichroism (MCD). These effects take place in the infrared and far-infrared regions of the spectrum. FR and MCD are characterized by anisotropy and strong dependence upon the distribution and strength of random crystal fields on JT clusters. It is shown also that significant magneto-electric effects can take place in these mixed-valence systems.

Original language	English
Pages (from-to)	231-242
Number of pages	12
Journal	Zeitschrift fur Physikalische Chemie
Volume	201
DOIs	https://doi.org/10.1524/zpch.1997.201.Part_1_2.231
State	Published - 1 Jan 1997
Externally published	Yes

ASJC Scopus subject areas

Physical and Theoretical Chemistry

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10.1524/zpch.1997.201.Part_1_2.231

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abstract = "A theoretical investigation is made of the dynamic tensor of the dielectric permittivity ∈ij(ω) in magnetic crystals with Jahn-Teller (JT) clusters of 3d-mixed valence ions. It is shown that coexistence in such clusters of an appreciable dipole and unquenched orbital momenta leads to an anomalous growth of antisymmetric tensor components and Faraday rotation (FR) and magnetic circular dichroism (MCD). These effects take place in the infrared and far-infrared regions of the spectrum. FR and MCD are characterized by anisotropy and strong dependence upon the distribution and strength of random crystal fields on JT clusters. It is shown also that significant magneto-electric effects can take place in these mixed-valence systems.",

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AU - Falkovskaya, L. D.

AU - Fishman, A. Ya

AU - Mitrofanov, V. Ya

AU - Ivanov, M. A.

AU - Tsukerblat, B. S.

PY - 1997/1/1

Y1 - 1997/1/1

N2 - A theoretical investigation is made of the dynamic tensor of the dielectric permittivity ∈ij(ω) in magnetic crystals with Jahn-Teller (JT) clusters of 3d-mixed valence ions. It is shown that coexistence in such clusters of an appreciable dipole and unquenched orbital momenta leads to an anomalous growth of antisymmetric tensor components and Faraday rotation (FR) and magnetic circular dichroism (MCD). These effects take place in the infrared and far-infrared regions of the spectrum. FR and MCD are characterized by anisotropy and strong dependence upon the distribution and strength of random crystal fields on JT clusters. It is shown also that significant magneto-electric effects can take place in these mixed-valence systems.

AB - A theoretical investigation is made of the dynamic tensor of the dielectric permittivity ∈ij(ω) in magnetic crystals with Jahn-Teller (JT) clusters of 3d-mixed valence ions. It is shown that coexistence in such clusters of an appreciable dipole and unquenched orbital momenta leads to an anomalous growth of antisymmetric tensor components and Faraday rotation (FR) and magnetic circular dichroism (MCD). These effects take place in the infrared and far-infrared regions of the spectrum. FR and MCD are characterized by anisotropy and strong dependence upon the distribution and strength of random crystal fields on JT clusters. It is shown also that significant magneto-electric effects can take place in these mixed-valence systems.

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Complex Faraday Effect in Cubic Magnets with Jahn-Teller Clusters

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