Optical and magneto-optical spectra and electron structure of ErAl 3 (BO 3 ) 4 single crystal

Malakhovskii, A.V.; Соколов, В. В.; Гудим, И. А.

doi:10.1016/j.jallcom.2016.12.200

Cited by 10 publications

(1 citation statement)

References 29 publications

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“…In the present study, single-crystal samples of SmAl 3 (BO 3 ) 4 were synthesized successfully from a flux based on bismuth and lithium molybdates (Temerov et al, 2008). As was shown previously, this method is highly efficient for the preparation of high-quality single crystals of ReAl 3 (BO 3 ) 4 with a trigonal structure (Chaudhury et al, 2010;Kadomtseva et al, 2014;Boldyrev et al, 2012;Volkov et al, 2015;Ivanov et al, 2013Ivanov et al, , 2017Denisov et al, 2014;Malakhovskii et al, 2017;Aleksandrovsky et al, 2010). However, the structure of the SmAB samples synthesized in our work using the same method is monoclinic.…”

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confidence: 53%

Monoclinic SmAl₃(BO₃)₄: synthesis, structural and spectroscopic properties

Oreshonkov

Shestakov

Мolokeev

et al. 2020

Acta Crystallogr Sect B

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Single crystals of SmAl3(BO3)4 were synthesized by the group growth on seeds method. The crystal structure was solved using a single-crystal experiment and the purity of the bulk material was proved by the Rietveld method. This borate crystallizes in the monoclinic C2/c space group with unit-cell parameters a = 7.2386 (3), b = 9.3412 (5), c = 11.1013 (4) Å and β = 103.2240 (10)°. IR and Raman spectroscopic analyses confirmed the monoclinic structure of SmAl3(BO3)4. Under 532.1 nm excitation, luminescence spectra exhibit bands assignable to the transitions from 4G5/2 to 6H5/2, 6H7/2, 6H9/2 and 6H11/2. The similarity of the luminescence spectra of the trigonal and monoclinic polymorphs is explained by the minor role of Sm—O bond distortion and the primary role of rotational distortion of SmO6 octahedra. The smaller covalency of the Sm—O bond in alumoborates is deduced in comparison with galloborates. Calorimetric measurements did not reveal high-temperature structural phase transitions up to a temperature of 720 K.

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