scholarly journals Surface-barrier structures based on solid solutions (In 2 S 3 ) х •(AgIn 5 S 8 ) 1–х

2021 ◽  
Vol 65 (6) ◽  
pp. 764-768
Author(s):  
A. A. Feshchanka ◽  
V. V. Khoroshko
Keyword(s):  
Crystal Structure ◽  
Elemental Composition ◽  
Single Crystals ◽  
Solid Solutions ◽  
Optical Radiation ◽  
Bridgman Method ◽  
Surface Barrier ◽  
Directional Crystallization ◽  
Photoelectric Properties ◽  
First Time

Single crystals of solid solutions (In2S3)x⋅ (AgIn5S8)1–x were grown by the method of directional crystallization of the melt (Bridgman method). Studies of the elemental composition and crystal structure of these single crystals have been carried out. On the basis of solid solutions (In2S3)x⋅ (AgIn5S8)1–x, photosensitive structures have been created for the first time and the photoelectric properties of these structures have been determined. The possibility of using the created structures as broadband photoconverters of optical radiation is shown.

Synthesis, single-crystal structure determination and Raman spectrum of Cu[C(CN)3]2·2 NH3

2015 ◽  
Vol 70 (3) ◽  
pp. 177-181
Author(s):  
Olaf Reckeweg ◽  
Armin Schulz ◽  
Francis J. DiSalvo
Keyword(s):  
Crystal Structure ◽  
Raman Spectroscopy ◽  
Raman Spectrum ◽  
Single Crystals ◽  
Structure Determination ◽  
Aqueous Ammonia ◽  
Ambient Conditions ◽  
Light Blue ◽  
Cell Parameters ◽  
First Time

AbstractTransparent, light blue crystals of Cu[C(CN)3]2·2 NH3 were obtained by dissolving Cu[C(CN)3]2 in aqueous ammonia and subsequent evaporation of the solvent under ambient conditions. Cu[C(CN)3]2·2 NH3 crystallizes in the space group C2/c (no. 15, Z = 4) with the cell parameters a = 1291.9(3), b = 753.18(15) and c = 1200.8(2) pm, and β = 92.68(3)°. The nature of the tricyanomethanide anion and the ammonia molecules were verified by Raman spectroscopy. Single crystals of Ag[C(CN)3] and Cu[C(CN)3]2 were synthesized, the known structures were confirmed and their Raman spectra were recorded for the first time for comparison.

scholarly journals Кристаллическая структура и ширина запрещенной зоны твердых растворов (MnIn-=SUB=-2-=/SUB=-S-=SUB=-4-=/SUB=-)-=SUB=-1-x-=/SUB=-·(AgIn-=SUB=-5-=/SUB=-S-=SUB=-8-=/SUB=-)-=SUB=-x-=/SUB=-

2018 ◽  
Vol 52 (8) ◽  
pp. 958
Author(s):  
И.В. Боднарь ◽  
Чан Бинь Тхан
Keyword(s):  
Crystal Structure ◽  
Band Gap ◽  
Single Crystals ◽  
Absorption Edge ◽  
Entire Range ◽  
Spinel Structure ◽  
Cell Parameter ◽  
Fundamental Absorption Edge ◽  
Composition Parameter ◽  
First Time

AbstractThe (MnIn_2S_4)_1– x • (AgIn_5S_8)_ x alloy single crystals are grown for the first time by the Bridgman method in the entire range of component concentrations. The composition of the single crystals and their crystal structure are determined. It is shown that the alloy crystallizes in the cubic spinel structure. The unit-cell parameter of the single crystals ( a ) is calculated, and its dependence on the composition parameter ( x ) is determined. It is established that the parameter a linearly varies with x . From the transmittance spectra in the region of the fundamental absorption edge, the band gap ( E _ g ) of the MnIn_2S_4 and AgIn_5S_8 compounds and (MnIn_2S_4)_1– x • (AgIn_5S_8)_ x alloys is determined, and the dependence of Eg on the parameter x is constructed. It is found that the band gap E _ g nonlinearly varies with x and has a maximum at x = 0.6.

Zur Kristallstruktur von Ba3(CrO4)2 / On the Crystal Structure of Ba3 (CrO4) 2

1972 ◽  
Vol 27 (7) ◽  
pp. 739-744 ◽  
Author(s):  
Hj. Mattausch ◽  
Hk. Müller-Buschbaum
Keyword(s):  
Crystal Structure ◽  
Single Crystals ◽  
X Ray Diffraction ◽  
X Ray ◽  
First Time

For the first time single crystals of Ba3 (CrO4)2 have been examined by X-ray diffraction. The already well known isotypy with Ba3 (PO4)2 has been completed by exact parameters. There are isolated tetrahedrons of O2- surrounding Cr5+ and octahedrons surrounding BaI. The complicated coordination of BaII is discussed.

MmHn(XO4)(m + n)/2crystals: structure, phase transitions, hydrogen bonds, conductivity. II. Structure and properties of Cs3(HSO4)2(H2PO4) and Cs4(HSO4)3(H2PO4) single crystals

2016 ◽  
Vol 72 (1) ◽  
pp. 133-141 ◽  
Author(s):  
Irina Makarova ◽  
Vadim Grebenev ◽  
Elena Dmitricheva ◽  
Ilya Vasiliev ◽  
Vladimir Komornikov ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Phase Diagram ◽  
Optical Properties ◽  
Phase Transitions ◽  
Single Crystals ◽  
Structural Features ◽  
Structure And Properties ◽  
Structure Phase ◽  
Dielectric And Optical Properties ◽  
First Time

Cs3(HSO4)2(H2PO4) and Cs4(HSO4)3(H2PO4) single crystals were obtained for the first time based on a systematic study of the phase diagram of the CsHSO4–CsH2PO4–H2O ternary system. To reveal the structural conditionality for anomalies in physical properties, including dielectric and optical properties, diffraction studies of the crystal structure of Cs3(HSO4)2(H2PO4) and Cs4(HSO4)3(H2PO4) were performed, and their common structural features and differences were analyzed.

scholarly journals Выращивание монокристаллов FeIn-=SUB=-2-=/SUB=-S-=SUB=-2-=/SUB=-Se-=SUB=-2-=/SUB=- и исследование их свойств

2018 ◽  
Vol 52 (10) ◽  
pp. 1203
Author(s):  
И.В. Боднарь ◽  
С.А. Детков ◽  
Ю.В. Касюк ◽  
Ю.А. Федотова
Keyword(s):  
Band Gap ◽  
Single Crystals ◽  
Absorption Edge ◽  
Fundamental Absorption Edge ◽  
Bridgman Method ◽  
Resonance Spectroscopy ◽  
Transmittance Spectra ◽  
First Time ◽  
Fe Ions

AbstractFeIn_2S_2Se_2 single crystals are grown for the first time by the Bridgman method, and their composition and properties are determined. It is found that the single crystals are hexagonal in structure. The arrangement of Fe ions in the structure of the FeIn_2S_2Se_2 crystals is studied by nuclear γ-resonance spectroscopy. From the transmittance spectra in the region of the fundamental absorption edge, the band gap of the single crystals grown in the study is determined.

scholarly journals Кристаллофизическая модель ионного переноса в монокристаллах супериоников Ba-=SUB=-1-x-=/SUB=-La-=SUB=-x-=/SUB=-F-=SUB=-2+x-=/SUB=- и Ca-=SUB=-1-x-=/SUB=-Y-=SUB=-x-=/SUB=-F-=SUB=-2+x-=/SUB=-

2021 ◽  
Vol 63 (10) ◽  
pp. 1485
Author(s):  
Н.И. Сорокин ◽  
Д.Н. Каримов
Keyword(s):  
Single Crystals ◽  
Solid Solutions ◽  
Mechanical Characteristics ◽  
Structural Data ◽  
Charge Carriers ◽  
Superionic Conductors ◽  
Ion Transfer ◽  
Directional Crystallization ◽  
Space Group ◽  
Galvanic Cells

Based on the electrophysical and structural data, a crystallophysical model of ion transfer in superionic conductors Ba1-xLaxF2 + x and Ca1-xYxF2 + x (space group Fm3m) is proposed, in which the charge carriers are mobile interstitial ions Fmob-, formed as a result of heterovalent substitutions of fluorite fragments [M14F64] (M = Ca, Ba) into structural clusters [M8R6F69] (R = La, Y). Single crystals of solid solutions Ca1-xYxF2 + x (0.02≤ x≤0.16) and Ba1-xLaxF2 + x (x = 0.31) were obtained by directional crystallization of the melt. The mobilities of ionic carriers in isostructural superionics Ba0.69La0.31F2.31, Ca0.84Y0.16F2.16, Pb0.67Cd0.33F2, and Pb0.9Sc0.1F2.1 are compared. Crystals Ba1-xLaxF2 + x and Ca1-xYxF2 + x with improved conductometric and mechanical characteristics are promising for replacing the traditional CaF2 electrolyte in galvanic cells for thermodynamic research of chemicals.

scholarly journals Synthesis, crystal structure, and electrochemical hydrogenation of the La2Mg17-xMx (M = Ni, Sn, Sb) solid solutions

2021 ◽  
Vol 12 (2) ◽  
pp. 197-203
Author(s):  
Vasyl Kordan ◽  
Vitalii Nytka ◽  
Ivan Tarasiuk ◽  
Oksana Zelinska ◽  
Volodymyr Pavlyuk
Keyword(s):  
Crystal Structure ◽  
Solid Solutions ◽  
Chemical Characteristics ◽  
Initial Structure ◽  
Electrochemical Hydrogenation ◽  
X Ray Diffraction ◽  
Hexagonal Symmetry ◽  
X Ray ◽  
Physical And Chemical ◽  
First Time

The crystal structure of La2Mg17-xSnx solid solution was determined by single crystal X-ray diffraction for the first time. This phase crystallizes in hexagonal symmetry with space group P63/mmc (a = 10.3911(3), c = 10.2702(3) Å, V = 960.36(6) Å3, R1 = 0.0180, wR2 = 0.0443 for the composition La3.65Mg30Sn1.10) and is related to the structure of CeMg10.3 and Th2Ni17-types which are derivative from the CaCu5-type. A series of isotypical solid solutions La2Mg17-xMx (M = Ni, Sn, Sb, x ~0.8) was synthesized and studied by X-ray powder diffraction, energy dispersive X-ray spectroscopy and fluorescent X-ray spectroscopy. All solid solutions crystallize with the structure related to the Th2Ni17-type. The electrochemical hydrogenation confirmed the similar electrochemical behavior of all studied alloys. The amount of deintercalated hydrogen depends on the physical and chemical characteristics of doping elements and increases in the sequence Sn < Mg < Sb < Ni. The most geometrically advantageous sites are octahedral voids 6h of the initial structure, thus a coordination polyhedron for H-atom is an octahedron [HLa2(Mg,M)4].

scholarly journals 6,6′-[(3,3′-Di-tert-butyl-5,5′-dimethoxy-1,1′-biphenyl-2,2′-diyl)bis(oxy)]bis(dibenzo[d,f][1,3,2]dioxaphosphepine) benzene monosolvate

IUCrData ◽  
2019 ◽  
Vol 4 (12) ◽  
Author(s):  
Benedict N. Leidecker ◽  
Christoph Kubis ◽  
Anke Spannenberg ◽  
Robert Franke ◽  
Armin Börner
Keyword(s):  
Crystal Structure ◽  
Single Crystals ◽  
Room Temperature ◽  
Benzene Solution ◽  
Specific Property ◽  
Stacking Interactions ◽  
Tert Butyl ◽  
Π Stacking ◽  
Centroid Distance ◽  
First Time

The crystal structure of the benzene monosolvate of the well known organic diphosphite ligand BIPHEPHOS, C46H44O8P2·C6H6, is reported for the first time. Single crystals of BIPHEPHOS were obtained from a benzene solution after layering with n-heptane at room temperature. One specific property of this type of diphosphite structure is the twisting of the biphenyl units. In the crystal, C—H...π contacts and π–π stacking interactions [centroid-to-centroid distance = 3.8941 (15) Å] are observed.

scholarly journals Crystal structure of the solid solution Ba8.35Pb0.65(B3O6)6

2017 ◽  
Vol 73 (3) ◽  
pp. 349-353 ◽  
Author(s):  
Wenwu Zhao
Keyword(s):  
Crystal Structure ◽  
Solid Solution ◽  
High Temperature ◽  
Single Crystals ◽  
Solid Solutions ◽  
Three Dimensional ◽  
Dimensional Structure ◽  
Barium Borate ◽  
Three Dimensional Structure ◽  
Spontaneous Nucleation

Single crystals of lead barium borate, Ba8.35Pb0.65(B3O6)6, octabarium lead(II) hexakis(triborate), have been obtained by spontaneous nucleation from a high-temperature melt. Its three-dimensional structure is constructed on the basis of a BaO9polyhedron, a (Pb/Ba)O6octahedron (occupancy ratio Pb:Ba = 0.216:0.784) and a condensed B3O6ring anion. In the crystal, the planar B3O6anions are stacked in an alternating fashion with Ba and (Pb/Ba) atoms along [001]. A comparison is made with the structures of related solid solutions in the system Ba/Pb/B/O.

New Heterostructures on the Basis of Cd1-xMnxTe Solid Solutions: Photoelectric Properties

2017 ◽  
pp. 1029-1031
Author(s):  
Vasiliy Rud ◽  
Yury Rud ◽  
Grygory Il’chuk ◽  
Volodymyr Kusnezh ◽  
Roman Petrus’
Keyword(s):  
Solid Solution ◽  
Thermal Treatment ◽  
Solid Solutions ◽  
Energy Barrier ◽  
New Technology ◽  
Optical Transitions ◽  
Photoelectric Properties ◽  
Relative Quantum ◽  
Solid Solution Crystal ◽  
First Time

The new technology of energy barrier fabrication by thermal treatment of Cd1-xMnxTe solid solution crystal wafers was proposed. By the first time the Ox/Cd1-хMnхTe (х=0.00–0.70) heterostructures with rectifying and photosensitive properties was fabricated. The relative quantum efficiency of photoconversion of fabricated by the firs time heterostructures was investigated. The nature of the interband optical transitions and values of the band gap in Cd1-xMnxTe was determined.

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