Topic
Antimonide
About: Antimonide is a research topic. Over the lifetime, 972 publications have been published within this topic receiving 10981 citations. The topic is also known as: antimonides.
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TL;DR: In this paper, the rotational levels and rotational constants for the two isotopic species, P 121 Sb and P 123 Sb, were analyzed in detail and a large number of strong rotational perturbations in the v = 0 and 1 levels of the 1 Π-X 1 Σ + band system were observed.
4 citations
TL;DR: In this paper, a large quantity of cobalt antimonide (CoSb3) based skutterudites nanopowder (NP) was fabricated through a room temperature co-precipitation precursor method.
Abstract: Skutterudites are known to be efficient thermoelectric (TE) materials in the temperature range from 600 K to 900 K. Dimensionless figure of merit (ZT) for filled skutterudite TE materials have been reported as ca. 1 at 800 K. Novel nano- engineering approaches and filling of the skutterudites crystal can further improve the transport properties and ultimately the ZT. Although classified among the promising TE materials, research on their large-scale production via bottom up synthetic routes is rather limited. In this work, large quantity of cobalt antimonide (CoSb3) based skutterudites nanopowder (NP) was fabricated through a room temperature co-precipitation precursor method. Dried precipitates were process by thermo-chemical treatment steps including calcination (in air) and reduction (in hydrogen). CoSb3 NPs were then mixed with silver (Ag) nanoparticles at different weight percentages (1%, 5% and 10% by wt) to form nanocomposites. Skutterudite NP was then consolidated by Spark Plasma Sintering (SPS) technique to produce highly dense compacts while maintaining the nanostructure. Temperature dependent TE characteristics of SPS’d CoSb3 and Ag containing nanocomposite samples were evaluated for transport properties, including thermal conductivity, electrical conductivity and Seebeck coefficient over the temperature range of 300 - 900 K. Physicochemical, structural and microstructural evaluation results are presented in detail.
4 citations
TL;DR: The antimonide oxide Ba(3)Sb(2)O consists of discrete [Sb (2)](4-) and O(2-) anions, and crystallizes with a new structure type, and is observed in some other Ba-rich metallide oxides.
Abstract: The antimonide oxide Ba3Sb2O consists of discrete [Sb2]4− and O2− anions, and crystallizes with a new structure type The Sb—Sb distances are comparable to those known from electron-precise zintl phases and the tetrahedral coordination of the O2− anion is also observed in some other Ba-rich metallide oxides
4 citations
TL;DR: In this article , a new class of multicomponent antimonide nanoparticles with chemical composition ranging from quaternary to senary were synthesized via a simple, reproducible, and scalable thermal treatment method.
4 citations
TL;DR: In this paper, a photonic-crystal distributed-feedback (PCDFB) laser with an antimonide type-II "W" active region was studied theoretically and experimentally.
Abstract: The far-field emission and spectral characteristics of a photonic-crystal distributed-feedback (PCDFB) laser with an antimonide type-II ‘W’ active region were studied theoretically and experimentally. A 2nd-order grating was defined on a 2D rectangular lattice tilted by 20° relative to the facet normal, using optical lithography and dry etching. For pulsed optical pumping, the emission line centred on λ = 4.6–4.7 μm was up to an order of magnitude narrower (7–10 nm) than those of Fabry-Perot and angled-grating DFB (α-DFB) lasers fabricated from the same wafer. The PCDFB beam quality was also substantially enhanced, for example, by a factor of 5 compared to the α-DFB at a pump-stripe width of 200 μm. Theoretical simulations based on a self-consistent time-domain Fourier-transform simulation confirm significant advantages of the PCDFB laser over an α-DFB geometry.
4 citations