Paramagnetic magneto-optical activity of f-f transitions in HoFe3(BO3)4 and HoAl3(BO3)4 single crystals

V. V. Sokolov; A. V. Malakhovskii; A. L. Sukhachev; I. A. Gudim

doi:10.1016/j.optmat.2019.05.024

Paramagnetic magneto-optical activity of f-f transitions in HoFe₃(BO₃)₄ and HoAl₃(BO₃)₄ single crystals

V. V. Sokolov, A. V. Malakhovskii, A. L. Sukhachev, I. A. Gudim

RAS - Kirensky Institute of Physics, Siberian Branch

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

8 Scopus citations

Abstract

Absorption and magnetic circular dichroism (MCD) spectra of HoFe₃(BO₃)₄ and HoAl₃(BO₃)₄ single crystals were measured as a function of temperature in the range of 90–293 K. Based on integrals of f-f absorption and МСD bands, temperature dependences of the paramagnetic magneto-optical activity (MOA) of f-f transitions were obtained for the first time. It was revealed that MOA of the same f-f transitions in the studied crystals were substantially different 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 as a consequence of the nature of f-f transitions allowance. In temperature dependences of the MOA of two transitions the singularities were revealed, which indicated to some local structural distortions in the corresponding excited states.

Original language	English
Pages (from-to)	35-40
Number of pages	6
Journal	Optical Materials
Volume	94
DOIs	https://doi.org/10.1016/j.optmat.2019.05.024
State	Published - Aug 2019
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2019 Elsevier B.V.

Funding

The work was supported by the Russian Foundation for Basic Researches grant 19-02-00034 .

Funders	Funder number
Russian Foundation for Basic Research	19-02-00034

Keywords

Magnetic circular dichroism
Rare earth alumoborates
Rare earth ferroborates
f-f transitions

Access to Document

10.1016/j.optmat.2019.05.024

Cite this

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title = "Paramagnetic magneto-optical activity of f-f transitions in HoFe3(BO3)4 and HoAl3(BO3)4 single crystals",

abstract = "Absorption and magnetic circular dichroism (MCD) spectra of HoFe3(BO3)4 and HoAl3(BO3)4 single crystals were measured as a function of temperature in the range of 90–293 K. Based on integrals of f-f absorption and МСD bands, temperature dependences of the paramagnetic magneto-optical activity (MOA) of f-f transitions were obtained for the first time. It was revealed that MOA of the same f-f transitions in the studied crystals were substantially different 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 as a consequence of the nature of f-f transitions allowance. In temperature dependences of the MOA of two transitions the singularities were revealed, which indicated to some local structural distortions in the corresponding excited states.",

keywords = "Magnetic circular dichroism, Rare earth alumoborates, Rare earth ferroborates, f-f transitions",

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

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AU - Sokolov, V. V.

AU - Malakhovskii, A. V.

AU - Sukhachev, A. L.

AU - Gudim, I. A.

PY - 2019/8

Y1 - 2019/8

N2 - Absorption and magnetic circular dichroism (MCD) spectra of HoFe3(BO3)4 and HoAl3(BO3)4 single crystals were measured as a function of temperature in the range of 90–293 K. Based on integrals of f-f absorption and МСD bands, temperature dependences of the paramagnetic magneto-optical activity (MOA) of f-f transitions were obtained for the first time. It was revealed that MOA of the same f-f transitions in the studied crystals were substantially different 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 as a consequence of the nature of f-f transitions allowance. In temperature dependences of the MOA of two transitions the singularities were revealed, which indicated to some local structural distortions in the corresponding excited states.

AB - Absorption and magnetic circular dichroism (MCD) spectra of HoFe3(BO3)4 and HoAl3(BO3)4 single crystals were measured as a function of temperature in the range of 90–293 K. Based on integrals of f-f absorption and МСD bands, temperature dependences of the paramagnetic magneto-optical activity (MOA) of f-f transitions were obtained for the first time. It was revealed that MOA of the same f-f transitions in the studied crystals were substantially different 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 as a consequence of the nature of f-f transitions allowance. In temperature dependences of the MOA of two transitions the singularities were revealed, which indicated to some local structural distortions in the corresponding excited states.

KW - Magnetic circular dichroism

KW - Rare earth alumoborates

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