scholarly journals Neue 1320637-Verbindungen / New 1320637 Compounds

1988 ◽  
Vol 43 (2) ◽  
pp. 240-242 ◽  
Author(s):  
Klaus-Jürgen Range ◽  
Karin Handrick
Keyword(s):  
High Pressure ◽  
Crystal Structures ◽  
Atmospheric Pressure ◽  
Spinel Structure ◽  
Zinc Blende ◽  
Quaternary Compounds

New quaternary compounds AgIn2X3Y (X = Se, Te; Y = Br, I) could be synthesized from AgY-In2X3-mixtures at atmospheric pressure. The crystal structures are defect-wurtzite (AgIn2S3Br) or defect-zinc-blende (AgIn2Te3Br, AgIn2Te3I). A transformation to high-pressure phases with spinel structure (AgIn2Se3Br, AgIn2Se3I) or defect-NaCl-structure (AgIn2Te3Br, AgIn2Te3I) takes place at 20 and 40 kbar.,respectively. AgIn2S3I with spinel structure could by synthesized from AgI and In2S3 at 40 kbar, 500 °C

scholarly journals Hochdrucksynthese quaternärer Chalkogenidhalogenide AB2X3Y (A = Cu, Ag; B = In; X = S, Se, Te; Y = Cl, Br, I)/High Pressure Synthesis of Quaternary Chalcogenide Halogenides AB2X3Y (A = Cu, Ag; B = In; X = S, Se, Te; Y = Cl, Br, I)

1983 ◽  
Vol 38 (2) ◽  
pp. 155-160 ◽  
Author(s):  
Klaus-Jürgen Range ◽  
Heinz-Joachim Hübner
Keyword(s):  
High Pressure ◽  
Crystal Structures ◽  
Spinel Structure ◽  
High Pressures ◽  
Reaction Pathways ◽  
High Pressure Synthesis ◽  
Quaternary Compounds ◽  
Pressure Synthesis ◽  
High Pressures And Temperatures

Abstract Quaternary compounds AB2X3Y (A = Cu, Ag; B = In; X = S, Se, Te; Y = Cl, Br, I) could be synthesized at high pressures and temperatures. The crystal structures found are defect-zincblende (AgIn2Se3I, AgIn2Te3l, CuIn2Se3Br, CuIn2Se3I, CuIn2Te3Cl, CuIn2Te3Br, CuInTe3I), spinel (AgIn2S3Cl, AgIn2S3Br, AgIn2Se3Cl, AgIn2Se3Br, AgIn2Se3l) and defect-rocksalt (AgIn2Te3Cl, AgIn2Te3Br). A second form of CuIn2Se3l is intermediate between the zincblende and spinel structure. A survey of the different reaction pathways of AB-B2X3 mixtures at high pressures and temperatures is given.

Cyclone Bomb hits Southern Brazil in 2020

2020 ◽  
Vol 3 (3) ◽  
Author(s):  
Ricardo Gobato ◽  
Alireza Heidari
Keyword(s):  
High Pressure ◽  
Atmospheric Pressure ◽  
High Speed ◽  
Satellite Images ◽  
The State ◽  
Southern Brazil ◽  
Santa Catarina ◽  
High Area ◽  
South Of Brazil ◽  
Rapid Drop

An “explosive extratropical cyclone” is an atmospheric phenomenon that occurs when there is a very rapid drop in central atmospheric pressure. This phenomenon, with its characteristic of rapidly lowering the pressure in its interior, generates very intense winds and for this reason it is called explosive cyclone, bomb cyclone. With gusts recorded of 116 km/h, atmospheric phenomenon – “cyclone bomb” (CB) hit southern Brazil on June 30, the beginning of winter 2020, causing destruction in its influence over. One of the cities most affected was Chapecó, west of the state of Santa Catarina. The satellite images show that the CB generated a low pressure (976 mbar) inside it, generating two atmospheric currents that moved at high speed. In a northwest-southeast direction, Bolivia and Paraguay, crossing the states of Parana and Santa Catarina, and this draft that hit the south of Brazil, which caused the destruction of the affected states.  Another moving to Argentina, southwest-northeast direction, due to high area of high pressure (1022 mbar). Both enhanced the phenomenon.

Low Temperature (4K) and High Pressure (6.5 Kbars) Crystal Structures of (TMTSF)2PF6

1985 ◽  
Vol 119 (1) ◽  
pp. 225-232 ◽  
Author(s):  
Bernard Galiois ◽  
Jacques Gaultier ◽  
Christian Hauw ◽  
Daniel Chasseau ◽  
Alain Meresse ◽  
...  
Keyword(s):  
High Pressure ◽  
Low Temperature ◽  
Crystal Structures

The Effect of Ge Segregation on Oxidation of Si

1987 ◽  
Vol 105 ◽  
Author(s):  
E. C. Frey ◽  
N. R. Parikh ◽  
M. L. Swanson ◽  
M. Z. Numan ◽  
W. K. Chu
Keyword(s):  
High Pressure ◽  
Low Temperature ◽  
Epitaxial Layer ◽  
Atmospheric Pressure ◽  
Oxidation Rate ◽  
Oxidation Temperature ◽  
Pressure Oxidation ◽  
Enhanced Oxidation ◽  
High Pressure Oxidation

AbstractWe have studied oxidation of various Si samples including: Ge implanted Si, CVD and MBE grown Si(0.4–4% Ge) alloys, and MBE grown Si-Si(Ge) superlattices. The samples were oxidized in pyrogenic steam (800–1000°C, atmospheric pressure) and at low temperature and high pressure (740°C, 205 atm of dry O2). The oxidized samples were analyzed with RBS/channeling and ellipsometry.An enhanced oxidation rate was seen for all Ge doped samples, compared with rates for pure Si. The magnitude of the enhancement increased with decreasing oxidation temperature. For steam oxidations the Ge was segregated from the oxide and formed an epitaxial layer at the Si-SiO2 interface; the quality of the epitaxy was highest for the highest oxidation temperatures. For high pressure oxidation the Ge was trapped in the oxide and the greatest enhancement in oxidation rate (>100%) was observed.

scholarly journals Supershort avalanche electron beam generation in gases

2008 ◽  
Vol 26 (4) ◽  
pp. 605-617 ◽  
Author(s):  
V.F. Tarasenko ◽  
E.H. Baksht ◽  
A.G. Burachenko ◽  
I.D. Kostyrya ◽  
M.I. Lomaev ◽  
...  
Keyword(s):  
High Pressure ◽  
Electron Beam ◽  
Atmospheric Pressure ◽  
Electron Beams ◽  
Solid Angle ◽  
Generation Mechanism ◽  
Full Width ◽  
Half Maximum ◽  
Electron Beam Pulse ◽  
Supershort Avalanche Electron Beam

AbstractThis paper reports on the properties of a supershort avalanche electron beam generated in the air or other gases under atmospheric pressure and gives the analysis of a generation mechanism of supershort avalanche electron beam, as well as methods of such electron beams registration. It is reported that in the air under the pressure of 1 atm, a supershort (<100 ps) avalanche electron beam is formed in the solid angle more than 2π steradian. The electron beam has been obtained behind a 45 µm thick Al-Be foil in SF6 and Xe under the pressure of 2 atm, and in He, under the pressure of about 15 atm. It is shown that in SF6 under the high pressure (>1 atm) duration (full width at half maximum) of supershort avalanche electron beam pulse is about 150 ps.

Insights into the self-preservation effect of methane hydrate at atmospheric pressure using high pressure DSC

2021 ◽  
Vol 86 ◽  
pp. 103738
Author(s):  
Xi-Yue Li ◽  
Dong-Liang Zhong ◽  
Peter Englezos ◽  
Yi-Yu Lu ◽  
Jin Yan ◽  
...  
Keyword(s):  
High Pressure ◽  
Atmospheric Pressure ◽  
Methane Hydrate ◽  
The Self ◽  
High Pressure Dsc

scholarly journals Accelerated materials design approaches based on structural classification: application to low enthalpy high pressure phases of SH3 and SeH3

2017 ◽  
Vol 3 (1) ◽  
Author(s):  
José A. Flores-Livas ◽  
Antonio Sanna ◽  
Stefan Goedecker
Keyword(s):  
High Pressure ◽  
Crystal Structures ◽  
Energy Landscape ◽  
Materials Design ◽  
Structural Classification

AbstractWe propose a methodology that efficiently asseses major characteristics in the energy landscape for a given space of configurations (crystal structures) under pressure. In this work we study SH

ChemInform Abstract: High-Pressure Synthesis, Crystal Structures, and Magnetic Properties of 5d Double-Perovskite Oxides Ca2MgOsO6and Sr2MgOsO6.

ChemInform ◽  
2015 ◽  
Vol 46 (24) ◽  
pp. no-no
Author(s):  
Yahua Yuan ◽  
Hai L. Feng ◽  
Madhav Prasad Ghimire ◽  
Yoshitaka Matsushita ◽  
Yoshihiro Tsujimoto ◽  
...  
Keyword(s):  
High Pressure ◽  
Magnetic Properties ◽  
Crystal Structures ◽  
Double Perovskite ◽  
Perovskite Oxides ◽  
High Pressure Synthesis ◽  
Pressure Synthesis
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