Artem Kuznetsov

Artem Kuznetsov
Sobolev Institute of Geology and Mineralogy · Department of Geology

PhD

About

42
Publications
2,759
Reads
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158
Citations
Citations since 2016
42 Research Items
157 Citations
2016201720182019202020212022010203040
2016201720182019202020212022010203040
2016201720182019202020212022010203040
2016201720182019202020212022010203040
Additional affiliations
September 2017 - present
Sobolev Institute of Geology and Mineralogy
Position
  • Researcher
Education
September 2015 - August 2017
Novosibirsk State University
Field of study
  • Geology

Publications

Publications (42)
Article
Full-text available
Carbonates in the system Na2CO3-CaCO3 are nowadays suggested as having a wide stability field at conditions of the mantle transition zone. Our structural analysis of nyerereite, which has limited stability fields at ambient conditions, and its similarities with already known carbonates that are stable at high-pressure conditions, allowed us to prop...
Article
Noncentrosymmetric borates K7MIn2-xYbx(B5O10)3 (M = Ca, Sr, Ba; x=0…2) were synthesized by the solid state reaction and the crystals were successfully grown by the top seeded solution growth method using the K2O-B2O3-MF2 flux. According to Rietveld refinement, the crystal structure belongs to the noncentrosymmetric R32 space group. Also, the octahe...
Conference Paper
Full-text available
В настоящее время многие исследования в области материаловедения связаны с разработкой более совершенных и экологичных источников света и люминофоров. Часть из этих проектов сфокусированы на боратах из-за их высокой химической, термической и радиационной стабильности, широкой области прозрачности и высокого порога лазерного излучения. Кроме того, б...
Conference Paper
Full-text available
Сегодняшний мир невозможно представить без высокотехнологичных устройств, для производства которых используется большое количество кристаллов различных соединений. Так, одними из перспективных соединений для оптических применений являются вольфраматы и молибдаты. Молибден и вольфрам входят в шестую группу периодической системы, а также располаг...
Conference Paper
Full-text available
Последнее десятилетие класс редкоземельных боратов ассоциируется с передовыми разработками в таких областях фотоники, как люминесценция и оптика. Большая группа ортоборатов RBO3 (R = La-Lu, Y, Sc) являются структурными аналогами карбонатов двухвалентных металлов. Эти соединения по размеру иона можно разделить на 3 группы: La (1.160)-Nd (1.109), Sm...
Conference Paper
Full-text available
RSc3(BO3)4, KCaR(BO3)2 and Li3Ba4Sc3B8O22 (R=La-Eu) rare earth borates were obtained by spontaneous crystallization from flux. Thermal, structural and some optical properties (Raman spectra and UV-vis-NIR diffuse reflectance spectra were studied. Second harmonic generation relative KH2PO4 was estimated for noncentrosymmetric scandium borates. The...
Article
NaSrR(BO 3) 2 (R = Ho−Lu, Y, Sc) compounds were obtained for the first time. Their structures exhibit disordered positions of Sr 2+ and Na + atoms while RO6 polyhedra are connected through the BO3 groups. Large distances between R atoms and high transparency in the range of 250−900 nm make them promising for phosphor applications. A pathway to obta...
Article
RBO3 – ScBO3 diagrams (R = La, Pr and Nd) were investigated by the solid state synthesis and DSC methods. In these systems the solid solutions based on RSc3(BO3)4, RBO3 and ScBO3 were identified. The single crystals of RSc3(BO3)4 were grown by spontaneous crystallization method from LiBO2-LiF flux. The borates containing Pr and Nd have typical lumi...
Article
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 R3 ̅ space group with unit cell parameters a=4.8939(1)Å, c=16.2663(5)Å. While another compound in this system EuSc3(BO3)4 has two modifications: low temperature α-C2/c (a=7.687(1) Å, b=9.810(2) Å...
Conference Paper
Full-text available
At present, many research projects are related to the development of more environmentally friendly light sources and luminophores. These projects have focused on borates due to their high chemical stability, thermal and radiation stability, wide transparency region and high laser threshold. In addition, borate compounds have diverse chemical compos...
Article
A new SmSc(BO3)2 compound was discovered under study of SmBO3 – ScBO3 diagram by solid-state synthesis. The obtained compound was grown from stoichiometric melt by spontaneous crystallization method, and crystallizes...
Conference Paper
Full-text available
Минерал бючлиит (K2Ca(CO3)2) кристаллизуется в тригональной пространственной группе R3m с параметрами элементарной ячейки a = 5.4526(12) Å, c = 17.781(8) Å, Z = 3. Структура бючлиита представлена атомами К1+ с девятерной координацией, которые имеют два типа связей K-O, из которых 6 коротких (2.86 Å) и 3 длинных (3.07 Å), тогда как атомы Ca2+ распол...
Article
Low temperature C2/c and high temperature P321 modifications of SmxSc4-x (BO3)4 solid solutions were grown from LiBO2–LiF flux. These borates have typical luminescence for Sm³⁺ containing crystals with the two strongest peaks at 602 and 645 nm, which correspond to ⁴G5∕2 → ⁶H7∕2, ⁶H5∕2 electron transitions. In addition, the compounds were characteri...
Article
Full-text available
A new luminescent material based on complex borate NaBaY(BO3)2 doped with Tb3+ and Eu3+ ions was obtained by high-temperature solid-state synthesis. Using X-ray diffraction analysis it was shown that NaBaY(BO3)2:0.07Tb3+:0.1Eu3+ crystallizes in trigonal system with the space group R-3m and isotypic with the mineral buetschliit K2Ca(CO3)2. The cryst...
Article
The LiBa12(BO3)7F4 crystals doped Nd3+ and Pr3+ were grown from hightemperature solution melts, using the TSSG method. All the samples have the wide absorption band in the visible range of 350-650 nm related to the dichroism, which is typical for other colored “antizeolites”. Strong radiation bands are associated with well known electronic transiti...
Article
Herein we report the growth of new RxLayScz(BO3)4 (x + y+z = 4, R = Sm, Tb) crystals with large second-harmonic generation (SHG) responses. The obtained compounds, grown from eutectic LiBO2-LiF flux by the TSSG method, crystallize in the space group P321 with the cell parameters a = 9.800(15) Å and c = 7.9565(7) Å for Sm0.34La0.68Sc2.98(BO3)4 and a...
Article
Novel KCaR(BO3)2 (R = La, Pr and Nd) compounds have been obtained by solid-state synthesis. Specifically, single crystals of KCaNd(BO3)2 and KCaPr(BO3)2 were grown by using a top seeded solution growth method from the KBO2 flux. These crystal compounds belong to the orthorhombic system, Pbca space group. KCaLa(BO3)2 exhibits high transparency in th...
Article
A new lithium barium scandium borate (Li3Ba4Sc3B8O22) was obtained by solid-state synthesis and grown by spontaneous crystallization. Single-crystal X-ray diffraction analysis showed that it crystallizes in the centrosymmetric space group P-1 with the cell dimensions a = 5.2230(4) Å, b = 8.5609(6) Å, c = 11.4157(8) Å, α = 73.3750(6)°, β = 78.5020(6...
Chapter
Full-text available
Complex ortohoborates of rare earth metals with the general chemical formula RxLa1−xSc3(BO3)4 (R = Sm, Tb) have been obtained by solid state synthesis and spontaneous crystallization. These crystals belong to the huntite family with the space group R32 and for x = 0.5 have unit cell parameters a = 9.823(6), c = 7.975(3) (SLSB) and a = 9.803(3), c =...
Article
The authors employ methods of spontaneous crystallization on a platinum loop, modified visual polythermal analysis (VPA), solid phase synthesis, differential thermal analysis (DTA), X-ray powder diffraction (XRD) analysis and chemical analyses, in order to study chemical processes and phase formation in the BaB2O4–LiF–Li2O system. In this system th...
Article
This review focuses on the recently discovered new compounds in the MMeR(BO3)2 borate family (where M = alkali metal, Me = alkaline earth metal, and R = rare-earth element), describing their crystal structures and luminescent properties. The basic building block for this structure is the two-layer {R[A(BO3)2]2} package (where A is an alkali metal a...
Article
Non-centrosymmetric borates K 7 CaR 2 (B 5 O 10 ) 3 have been synthesized by solid state reaction and successfully grown by the top seeded solution growth method using K 2 O-B 2 O 3 -CaF 2 flux. IR, Raman, absorption spectra as well as data on melting temperature for the crystals were obtained. Optical properties like UV absorption edge and SHG int...
Article
time. Crystals of the compound melts congruently at 1007 oC, however melt crystallization of high quality crystal is impossible due to phase transition at ~920 oC. The top seeded solution method from Li2WO4-WO3 flux was successfully applied reducing the growth temperature below 900 oC. According to single crystal x-ray measurements, the crystal cor...
Article
Phase equilibria in the ΒaΒ2O4–LiF–NaF section of the quaternary reciprocal system Li, Na, Ba // BO2, F are studied by the solid‐phase synthesis, differential thermal analysis, and visual polythermal analysis techniques. It is shown that this system can be used for the growth of bulk β‐ΒaΒ2O4 crystals. Phase equilibria in the ΒaΒ2O4–LiF–NaF section...
Article
For the first time Na2Mo2O7 crystals were grown by Czochralski technique in low-thermal-gradient conditions (LTG Cz), which allowed obtaining crystals of record size (100 (D) × 45 (L) mm³) and optical quality. Influence of growth rate and seed direction on crystal morphology was studied, optimal growth conditions were determined. Three cleavage pla...
Article
Non-centrosymmetric borates K7CaY2(B5O10)3 have been synthesized by solid state reaction and the crystals were successfully grown by the top seeded solution growth method using K2O-B2O3-CaF2 flux. According to the single X-ray diffraction, the structure belongs to the R32 space group with lattice parameters a = 13.2516(2) Å and c = 14.9679(3) Å. IR...
Article
Crystals of the MnxBa12(BO3)8-2xF8xphase were grown from a high-temperature solution. This new fluoride borate is built of positively charged [Ba12(BO3)6]6+blocks, the so-called "anti-zeolite" pattern. Using X-ray single-crystal diffraction, the bulk atomic arrangement in the centrosymmetric tetragonal unit cell in I4/mcm could be elucidated. Cryst...
Article
Full-text available
Bulk crystals of new huntite type borates were grown by TSSG method using eutectic LiBO2–LiF as a flux. Chemical composition, X-ray diffraction, optical absorption and fluorescence spectra of the grown samples were studied.
Article
Studied LixNa1-xBa12(BO3)7F4 (P42bc) solid solution belongs to the new class of "antizeolite" borates with [Ba12(BO3)6](6+) cation pattern, which contains channels filled by anionic clusters. Optical-quality crystals were grown from the compositions with different sodium-lithium ratio. The results of Rietveld refinement based on powder data demonst...
Article
The bulk crystals of LiBa12(BO3)7F4 were obtained from two flux compositions by the top seeded solution growth method. Crystals grown from BaCO3:BaF2:H3BO3:Li2CO3 = 3:3:3:1 charge were found to have a distinct linear dichroism effect at 0.35–0.65 and around 0.73 μm. This suggests application of the material in the production of polarizing filters a...

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