Upconversion luminescence of YAl3(BO3)4:(Yb3+,Tm3+) crystals

Aleksandrovsky, A.S.; Гудим, И. А.; Крылов, А. С.; Malakhovskii, A.V.; Temerov, V. L.

doi:10.1016/j.jallcom.2010.02.089

Cited by 33 publications

(12 citation statements)

References 13 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.…”

Section: Introductionmentioning

confidence: 54%

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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Section: Introductionmentioning

confidence: 54%

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

Oreshonkov

Shestakov

Мolokeev

et al. 2020

Acta Crystallogr Sect B

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“…Such noncentrosymmetric (NCS) borates as YAl3(BO3)4 (YAB) [24] Ca4RO(BO3)3 (R = rare earth of Y) [25] and Na3La9O3(BO3)8 [26] are known as self-frequency doubling (SFD) materials when doped with Nd. YAl3(BO3)3 doped with Mn 4+ or pair Yb 3+ /Tm 3+ is prospective as efficient phosphor material [27,28]. Femtosecond pulse generation was carried out in Ca3Gd2(BO3)4:Nd 3+ crystal [29].…”

Section: Introductionmentioning

confidence: 99%

Structural and spectroscopic properties of new noncentrosymmetric self-activated borate Rb3EuB6O12 with B5O10 units

et al. 2018

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New noncentrosymmetric double borate Rb3EuB6O12 was synthesized by solid state reaction method, and their crystallographic parameters were obtained by Rietveld analysis. This borate crystallizes in the trigonal space group R32 with cell parameters of a = 13.4604(2) Å, c = 30.7981(5) Å, Z = 15. Their structure features a three-dimensional framework composed of [B5O10] 5groups that are bridged by Eu-O polyhedra. The existence of B5O10 group in the structure was confirmed by vibrational spectroscopy. Rb3EuB6O12 melts incongruently at 1101 K. The second harmonic generation effect of Rb3EuB6O12 is 16 times higher than that of α-quartz standard. In the luminescence spectrum, the domination of a single prominent narrow line from hypersensitive 5 D0-7 F2 manifold of Eu 3+ ions is observed, while 5 D0-7 F1 manifold and ultranarrow 5 D0-7 F0 line are of comparable peak intensity. These features are explained by specific local symmetry of Eu ion within the crystal structure of Rb3EuB6O12..

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“…Therefore, considerable attention has been devoted to the search for new more efficient materials for pumping [1][2][3][4][5][6][7][8][9][10]. Among the reported crystals, some molybdate crystals with disordered structure have generated a great deal of interest due to their intriguing properties such as high damage threshold, wide absorption band and high quantum efficiency which made them promising materials for solid-state laser gain media [11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%