Magneto-optical activity of f-f transitions in ErFe3(BO3)4 and ErAl3(BO3)4 single crystals

A. V. Malakhovskii; A. L. Sukhachev; V. V. Sokolov; T. V. Kutsak; V. S. Bondarev; I. A. Gudim

doi:10.1016/j.jmmm.2015.02.051

Magneto-optical activity of f-f transitions in ErFe₃(BO₃)₄ and ErAl₃(BO₃)₄ single crystals

A. V. Malakhovskii, A. L. Sukhachev, V. V. Sokolov, T. V. Kutsak, V. S. Bondarev, I. A. Gudim

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

Abstract

Absorption, magnetic circular dichroism and natural circular dichroism spectra of ErFe₃(BO₃)₄ and ErAl₃(BO₃)₄ single crystals were measured as a function of temperature in the range of 90-293 K. It was found out that magneto-optical activity of the same f-f transitions in the studied crystals substantially differed and their temperature dependences did not follow the Curie-Weiss law in contrast to the properties of allowed transitions. The observed phenomena were accounted for by the nature of f-f transitions allowance. Properties of the transition ⁴I_15/2→⁴S_3/2 were studied in detail. In particular, the Zeeman splitting and the natural optical activity of the absorption lines composed of the transition were determined. The vibronic line with the very large natural optical activity was revealed and identified. Two nonequivalent Er³⁺ ion positions with the opposite chirality were found out in one of the excited states. Polarization properties of the ⁴I_15/2→⁴S_3/2 transition in the ErFe₃(BO₃)₄ crystal have shown that the local symmetry of Er³⁺ ion in this crystal in the range of 90-293 K is lower than the D₃ one. From the heat capacity measurements it was revealed, that the first order structural phase transition to lower symmetry occurred in ErFe₃(BO₃)₄ at 433-439 K.

Original language	English
Pages (from-to)	255-265
Number of pages	11
Journal	Journal of Magnetism and Magnetic Materials
Volume	384
DOIs	https://doi.org/10.1016/j.jmmm.2015.02.051
State	Published - 15 Jun 2015
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2015 Elsevier B.V. All rights reserved.

Funding

The work was supported by the Russian Foundation for Basic Researches Grant 12-02-00026 and by the President of Russia Grant no. Nsh-2886.2014.2 .

Funders	Funder number
Russian Foundation for Basic Researches	12-02-00026

Keywords

Electronic structure
Magnetic circular dichroism
Natural circular dichroism
Rare earth alumoborates
Rare earth ferroborates

Access to Document

10.1016/j.jmmm.2015.02.051

Cite this

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title = "Magneto-optical activity of f-f transitions in ErFe3(BO3)4 and ErAl3(BO3)4 single crystals",

abstract = "Absorption, magnetic circular dichroism and natural circular dichroism spectra of ErFe3(BO3)4 and ErAl3(BO3)4 single crystals were measured as a function of temperature in the range of 90-293 K. It was found out that magneto-optical activity of the same f-f transitions in the studied crystals substantially differed and their temperature dependences did not follow the Curie-Weiss law in contrast to the properties of allowed transitions. The observed phenomena were accounted for by the nature of f-f transitions allowance. Properties of the transition 4I15/2→4S3/2 were studied in detail. In particular, the Zeeman splitting and the natural optical activity of the absorption lines composed of the transition were determined. The vibronic line with the very large natural optical activity was revealed and identified. Two nonequivalent Er3+ ion positions with the opposite chirality were found out in one of the excited states. Polarization properties of the 4I15/2→4S3/2 transition in the ErFe3(BO3)4 crystal have shown that the local symmetry of Er3+ ion in this crystal in the range of 90-293 K is lower than the D3 one. From the heat capacity measurements it was revealed, that the first order structural phase transition to lower symmetry occurred in ErFe3(BO3)4 at 433-439 K.",

keywords = "Electronic structure, Magnetic circular dichroism, Natural circular dichroism, Rare earth alumoborates, Rare earth ferroborates",

author = "Malakhovskii, {A. V.} and Sukhachev, {A. L.} and Sokolov, {V. V.} and Kutsak, {T. V.} and Bondarev, {V. S.} and Gudim, {I. A.}",

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T1 - Magneto-optical activity of f-f transitions in ErFe3(BO3)4 and ErAl3(BO3)4 single crystals

AU - Malakhovskii, A. V.

AU - Sukhachev, A. L.

AU - Sokolov, V. V.

AU - Kutsak, T. V.

AU - Bondarev, V. S.

AU - Gudim, I. A.

PY - 2015/6/15

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N2 - Absorption, magnetic circular dichroism and natural circular dichroism spectra of ErFe3(BO3)4 and ErAl3(BO3)4 single crystals were measured as a function of temperature in the range of 90-293 K. It was found out that magneto-optical activity of the same f-f transitions in the studied crystals substantially differed and their temperature dependences did not follow the Curie-Weiss law in contrast to the properties of allowed transitions. The observed phenomena were accounted for by the nature of f-f transitions allowance. Properties of the transition 4I15/2→4S3/2 were studied in detail. In particular, the Zeeman splitting and the natural optical activity of the absorption lines composed of the transition were determined. The vibronic line with the very large natural optical activity was revealed and identified. Two nonequivalent Er3+ ion positions with the opposite chirality were found out in one of the excited states. Polarization properties of the 4I15/2→4S3/2 transition in the ErFe3(BO3)4 crystal have shown that the local symmetry of Er3+ ion in this crystal in the range of 90-293 K is lower than the D3 one. From the heat capacity measurements it was revealed, that the first order structural phase transition to lower symmetry occurred in ErFe3(BO3)4 at 433-439 K.

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