Study of an EuBO3–ScBO3 system and EuSc3(BO3)4, EuSc(BO3)2 orthoborates

Artem B. Kuznetsov; Konstantin A. Kokh; Eketerina V. Kaneva; Valery A. Svetlichnyi; Nadezda G. Kononova; Vyacheslav S. Shevchenko; Sergey V. Rashchenko; Alexander E. Kokh

doi:10.1039/D1DT02477A

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Study of an EuBO₃–ScBO₃ system and EuSc₃(BO₃)₄, EuSc(BO₃)₂ orthoborates†

Artem B. Kuznetsov,

*^a Konstantin A. Kokh,^abc Eketerina V. Kaneva,^d Valery A. Svetlichnyi,

^e Nadezda G. Kononova,^a Vyacheslav S. Shevchenko,^a Sergey V. Rashchenko^ab and Alexander E. Kokh^a

Author affiliations

* Corresponding authors

^a Sobolev Institute of Geology and Mineralogy SB RAS, Novosibirsk 630090, Russia
E-mail: ku.artemy@igm.nsc.ru

^b Novosibirsk State University, Novosibirsk 630090, Russia

^c Kemerovo State University, Kemerovo, Russia

^d Vinogradov Institute of geochemistry SB RAS, Irkutsk 664033, Russia

^e Tomsk State University, Tomsk 634050, Russia

Abstract

The EuBO₃–ScBO₃ system was investigated by solid state synthesis and DSC methods. In this system, a new EuSc(BO₃)₂ compound was found. It crystallizes in the R [3 with combining macron] space group with unit cell parameters of a = 4.8939(1) Å and c = 16.2663(5) Å. Whereas another compound in the system EuSc₃(BO₃)₄ possesses two modifications: a low-temperature α-C2/c (a = 7.687(1) Å, b = 9.810(2) Å, c = 12.021(2) Å, and β = 105.379(4)°) and a high-temperature β-R32 (a = 9.7473(1) Å and c = 7.9205(2) Å). The α-EuSc₃(BO₃)₄ crystal was grown with LiBO₂–LiF flux, and β-EuSc₃(BO₃)₄ was obtained by the solid state synthesis. All of the obtained crystals exhibited typical Eu³⁺ luminescence spectra with peaks at 589 nm, 596 nm, 615 nm, 657 nm and 689 nm, which corresponded to the ⁵D₀ → ⁷F_J (J = 0, 1, 2 and 4) electron transitions. The strongest peak of luminescence was located at 615 nm and corresponded to the ⁵D₀ → ⁷F₀ transition.

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Article information

DOI: https://doi.org/10.1039/D1DT02477A
Article type: Paper
Submitted: 27 Jul 2021
Accepted: 01 Sep 2021
First published: 01 Sep 2021

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Dalton Trans., 2021,50, 13894-13901

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Study of an EuBO₃–ScBO₃ system and EuSc₃(BO₃)₄, EuSc(BO₃)₂ orthoborates

A. B. Kuznetsov, K. A. Kokh, E. V. Kaneva, V. A. Svetlichnyi, N. G. Kononova, V. S. Shevchenko, S. V. Rashchenko and A. E. Kokh, Dalton Trans., 2021, 50, 13894 DOI: 10.1039/D1DT02477A

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