Natural optical activity of f-f transitions in ErAl3(BO3)4 single crystal

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

doi:10.1016/j.chemphys.2017.06.011

Natural optical activity of f-f transitions in ErAl₃(BO₃)₄ single crystal

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

RAS - Kirensky Institute of Physics, Siberian Branch

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

1 Scopus citations

Abstract

Absorption and natural circular dichroism (NCD) spectra of ErAl₃(BO₃)₄ single crystal were measured at 90 K in the range of 10,000–28,200 cm⁻¹. The spectra were decomposed on the Lorentz shape components and the natural optical activities (NOA) of f-f transitions between Stark components of the ground and excited multiplets were found. The NCD spectra permitted us to find out existence of two non equivalent positions of Er³⁺ ion in one of its excited states, which are due to the local decrease of the crystal symmetry in this state. Very large NOA of a vibronic line was revealed. This phenomenon was accounted for basing on the new quantum mechanical formula for the NOA of electron transitions. The principle difference of the NOA properties of electric dipole allowed and parity forbidden transitions is discussed.

Original language	English
Pages (from-to)	102-110
Number of pages	9
Journal	Chemical Physics
Volume	493
DOIs	https://doi.org/10.1016/j.chemphys.2017.06.011
State	Published - 17 Aug 2017
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2017 Elsevier B.V.

Keywords

Er ion
Natural circular dichroism
f-f transitions

Access to Document

10.1016/j.chemphys.2017.06.011

Cite this

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title = "Natural optical activity of f-f transitions in ErAl3(BO3)4 single crystal",

abstract = "Absorption and natural circular dichroism (NCD) spectra of ErAl3(BO3)4 single crystal were measured at 90 K in the range of 10,000–28,200 cm−1. The spectra were decomposed on the Lorentz shape components and the natural optical activities (NOA) of f-f transitions between Stark components of the ground and excited multiplets were found. The NCD spectra permitted us to find out existence of two non equivalent positions of Er3+ ion in one of its excited states, which are due to the local decrease of the crystal symmetry in this state. Very large NOA of a vibronic line was revealed. This phenomenon was accounted for basing on the new quantum mechanical formula for the NOA of electron transitions. The principle difference of the NOA properties of electric dipole allowed and parity forbidden transitions is discussed.",

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AB - Absorption and natural circular dichroism (NCD) spectra of ErAl3(BO3)4 single crystal were measured at 90 K in the range of 10,000–28,200 cm−1. The spectra were decomposed on the Lorentz shape components and the natural optical activities (NOA) of f-f transitions between Stark components of the ground and excited multiplets were found. The NCD spectra permitted us to find out existence of two non equivalent positions of Er3+ ion in one of its excited states, which are due to the local decrease of the crystal symmetry in this state. Very large NOA of a vibronic line was revealed. This phenomenon was accounted for basing on the new quantum mechanical formula for the NOA of electron transitions. The principle difference of the NOA properties of electric dipole allowed and parity forbidden transitions is discussed.

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