VolPort، شرکت پیشرو در صنایع سنگ شکن و آسیاب چینی، در 30 سال گذشته همواره به توسعه سنگ شکن های سنگ معدن، ماشین آلات شن و ماسه سازی و آسیاب های صنعتی اختصاص داده شده است.
با ما تماس بگیریدIn this work, a tellurium–selenium (Te-Se) solid solution with trace antimony (Sb) doping was synthesized via the high pressure and high temperature …
A. Brown and B. Lewis, "The Systems Bismuth-Tellurium and Antimony-Tellurium and the Synthesis of the Minerals Hedleyite and Wehrlite,≓ J. Phys. Chem. …
α-Sb2O3 (senarmontite), β-Sb2O3 (valentinite), and α-TeO2 (paratellurite) are compounds with pronounced stereochemically active Sb and Te lone pairs. The …
In this work, a tellurium-selenium (Te-Se) solid solution with trace antimony (Sb) doping was synthesized via the high pressure and high temperature method. It was found that slight Se doping into the Te sites not only had no impact on the hall mobility and carrier concentration, but also enhanced the density-of-state effective mass of Sb 0.003 ...
[Show full abstract] which iodine activity grown from antimony samples separated quickly after neutron irradiations of uranium was counted give the half life of 135Sb as 1·9−0·5+0·9 sec and ...
In this study, we examined the thermoelectric (TE) properties of co-evaporated p-type antimony telluride (Sb 2 Te 3) thin films on aluminum nitride (AlN)-coated stainless steel foil substrates.We ...
By ball milling alloyed bulk crystalline ingots into nanopowders and hot pressing them, we had demonstrated high figure-of-merit in nanostructured bulk bismuth antimony telluride. In this study, we use the same ball milling and hot press technique, but start with elemental chunks of bismuth, antimony, and tellurium to avoid the ingot formation step. We show …
THE ANTIMONY-TELLURIUM SYSTEM Each of the five binary samples containing zero, 20.0,40.0, 50.0, and 60.0 at.% tellurium is a single phase. The five diffraction patterns have been indexed with the restriction that h+l=y for the space group R^m. The cell constant c equals 2 x 5.624 and 5 x 6.082 A for zero and 60 at.% tellurium, respectively ...
The most useful methods here are the notices routines. Roadrunner will offen issue warning or informational messages. For repeated simulation such messages will clutter up the outputs. noticesOff and noticesOn can be used to turn on an off the messages. tellurium.getVersionInfo() [source] Returns version information for tellurium included …
A Complicated Route from Disorder to Order in Antimony–Tellurium Binary Phase Change Materials. Yonghui Zheng, Yonghui Zheng. Key Laboratory of Polar …
Tellurium was discovered by Franz Joseph Müller von Reichenstein, a Romanian mining official, in 1782. Reichenstein was the chief inspector of all mines, smelters and saltworks in Transylvania. He also had an interest in chemistry and extracted a new metal from an ore of gold, known as aurum album, which he believed was antimony .
@misc{etde_5645299, title = {Study of interaction in antimony-tellurium-oxygen system} author = {Demina, L A, Buzhak, S L, Dolgikh, V A, Khodyakova, I A, Popovkin, B A, and Novoselova, A V} abstractNote = {The ternary system antimony-tellurium-oxygen is studied using the methods of DTA and X-ray phase analysis. The triangulation of the …
Request PDF | Multivariate Study in Chemical Vapor Generation for Simultaneous Determination of Arsenic, Antimony, Bismuth, Germanium, Tin, Selenium, Tellurium and Mercury by Inductively Coupled ...
The antimony-rich parts of the ternary systems calcium, strontium, barium and cerium with iron and antimony; structure refinements of the LaFe4Sb12-type compounds SrFe4Sb12 and CeFe4Sb12; the new compounds CaOs4Sb12 and YbOs4Sb12. Journal of Alloys and Compounds 1999, 291 (1-2), 66-72.
In both cases, antimony and tellurium spectra still contained metalloid states along with two oxidation states: Sb 2 O 3 (BE Sb4d 5/2 ~ 34. 2 eV) and Sb 2 O 5 (~34. 7 eV), Te sub-oxide (BE Te4d 5/2 ~ 41.5 eV) and TeO 2 (~43.7 eV). The ageing results in an increase of the antimony content in the surface layer.
Tellurium is an element with chemical properties resembling those of non-metals, such as sulfur, however, if the toxicity is concerned, the properties are closer to the effects caused by selenium ...
Tellurium is mainly applied in the production of cadmium telluride thin-film solar cells, followed by thermo-electrics (Willner et al., 2021). In the case of barium (Ba), it has been already evaluated that the …
The PES thus describes the optimal crystallization pathway: 1) the amor‐to‐sc/A7 structural transition is a fast diffusionless AOP, driven by thermodynamics; subsequently, 2) the sc‐to‐fcc‐phase (or A7‐to‐hex‐phase) transition is a slowly diffusing COP, until the chemically stable phase is reached. Figure 4.
DOI: 10.1016/J.JALLCOM.2021.161342 Corpus ID: 237720769; Facile synthesis and high thermoelectric performance of tellurium with antimony doping …
In this work, a tellurium–selenium (Te-Se) solid solution with trace antimony (Sb) doping was synthesized via the high pressure and high temperature method. It was found that slight Se doping into the Te sites not only had no impact on the hall mobility and carrier concentration, but also enhanced the density-of-state effective mass …
Selenium and tellurium are moderately volatile (Lodders, 2003) and chalcophile elements (Guo et al., 1999; Hattori et al., 2002). They are present in the mantle at 2-3 orders of magnitude higher ...
Tellurium was discovered in 1783 by Franz Joseph Müller von Reichenstein at Sibiu, Romania. He became intrigued by ore from a mine near Zalatna which had a metallic sheen and which he suspected was native antimony or bismuth. (It was actually gold telluride, AuTe 2.) Preliminary investigation showed neither antimony nor bismuth to be present.
Antimony is the main method of building models in Tellurium, and can be used in other contexts as well. Its main features include: Easily define species, reactions, …
0.42% of all Zinc deposits have Tellurium. 41.94% of all Tellurium deposits have Zinc. 6.14% of all Bismuth deposits have Tellurium. 38.71% of all Tellurium deposits have …
Molecules 2023, 28, 7287 2 of 12 tellurium (Te) was found to exhibit promising characteristics as a promising TE material due to its relatively high band degeneracy (Nv = 4) near the valence band maximum (VBM), resulting in a large density-of-state (DOS) effective mass m*DOS and reaching a peak Seebeck coefficient (S) value …
The 6.0-day tellurium showed a high abundance of x-rays, little or no conversion electrons and some gamma-ray activity which could be due to the 3.5 minute antimony daughter. The tellurium fraction contained another component of 4.5-day half-life which could not be observed in the decay curve because of its low abundance but which was detected ...
Instead of utilizing commercial detectors and a detection scheme based on 2-D layer semiconductors or surface plasmon enhancement effect, we have developed a novel terahertz (THz) detector consisting of an array of microgrooves. This device combines the exceptional performance of materials with the localized surface plasmon (LSP) effect in …
رزرو رایگان
0086-21-58386256ساعات اداری
Mon-Sat 8am 6pm