Results 61 to 70 of about 1,840 (197)

Exploring the Landscape of MgO Polymorphs: Stability and the Electronic Band Gap of Promising Candidates

Zeitschrift für anorganische und allgemeine Chemie, EarlyView.
In this study, we have investigated possible predicted polymorphs of magnesium oxide (MgO) with respect to their thermodynamic and kinetic stability, as well as their electronic properties, focusing on the possibility of tuning the band gap of the material.
D. Zagorac, J. Zagorac, D. Fischer, T. Škundrić, J. C. Schön   +4 more
wiley   +1 more source

Comparison of different X‐ray‐based scanning electron microscopy methods to detect sub‐nanometre ultra‐thin InAs layers deposited on top of GaAs

Journal of Microscopy, EarlyView.
Abstract We compare three different methods of X‐ray analysis in a scanning electron microscope (SEM): energy‐dispersive X‐ray spectroscopy (EDX), wavelength‐dispersive X‐ray spectroscopy (WDX) and micro X‐ray fluorescence (μXRF). These methods are all applied to the same gallium arsenide (GaAs) wafer with a 0.8 nm layer of indium arsenide (InAs) on ...
Thomas Walther, Stuart Creasey‐Gray, Stephan Boehm, Heath Young, Yang Yang   +4 more
wiley   +1 more source

Particle Shape-Based Evaluation of the Leaching of Sphalerite Ore in Dilute Acid Solutions

Journal of Advanced Research in Natural and Applied Sciences
In this study, the effects of changes in particle shapes on dissolution efficiencies in zinc (Zn) recovery from a lead-zinc (Pb-Zn) ore by acid leaching method were investigated.
Tuğba Deniz Tombal, İlgin Kurşun Ünver, Mert Terzi   +2 more
doaj   +1 more source

Determining bismuth content in GaAsBi alloys by energy‐dispersive X‐ray spectroscopy: A case study with multiple sets of k*‐factors for analytical transmission electron microscopy

Journal of Microscopy, EarlyView.
Abstract Measuring the bismuth (Bi) content of ternary gallium arsenide bismuthide (GaAsBi) alloys is important because it sensitively influences their bandgap, and Bi is known to segregate vertically to the surface and sometimes also laterally during growth, so elemental distribution maps need to be quantified.
T. Walther
wiley   +1 more source

Study on the Selective Inhibition of FeSO₄-NaH₂PO₄ in Sphalerite–Pyrite Flotation Separation

Molecules
Sphalerite–pyrite separation has always been one of the key issues of concern in the field of mineral flotation. To achieve selective flotation separation of sphalerite and pyrite, a novel flotation system, FeSO4+NaH2PO4-CuSO4-SIBX, was adopted.
Zhiyong Zhang, Jingjing Xiao, Sheng Liu, Pan Xiao, Huijun Cao   +4 more
doaj   +1 more source

Microstructural evidence for multiple generations of sulfide precipitation and impact‐induced thermal alteration under acidic conditions on Asteroid Ryugu

Meteoritics &Planetary Science, EarlyView.
Abstract Here we report on the microstructure and chemistry of sulfide minerals returned from asteroid (162173) Ryugu. We identify a unique sulfide population in particle A0016 composed of violarite (FeNi2S4), pyrite (FeS2), chalcopyrite (CuFeS2), pyrrhotite (Fe1‐xS), and pentlandite ([Fe,Ni]9S8).
M. C. Benner, B. S. Prince, D. L. Schrader, T. J. Zega   +3 more
wiley   +1 more source

In Situ Trace Element Composition of Sphalerite and Its Geological Significance: A Case Study from the Huize Ge-Rich Pb-Zn Deposit, NE Yunnan

Applied Sciences
The Huize Ge-rich Pb-Zn deposit is an important part of the Sichuan–Yunnan–Guizhou carbonate-hosted Pb-Zn metallogenic area and is one of the most representative super-large deposits in the northeastern Yunnan Pb-Zn ore concentration area.
Fenghao Li, Runsheng Han, Yan Zhang, Hongwei Liu, Hanzhang Gu, Jiuli Yu, Lihui Zhu, Baosheng Huang, Ticai Hu   +8 more
doaj   +1 more source

On the Chalcopyrite inclusions in Sphalerite

Boletim da Faculdade de Filosofia, Ciências e Letras da Universidade de São Paulo. Mineralogia, 1952
Uma das finalidades do presente trabalho foi medir as porcentagens de inclusões de calcopirita em cristais de esfalerita, que formam concrescimento de ocorrência relativamente frequente nas jazidas hidrotermais. Parece existir uma relação entre porcentagens de inclusões e intensidade hidrotermal dos depósitos, como também entre porcentagens de ...
openaire   +2 more sources

Nature, origin, and phosphorylation potential of the phosphorus/sulfur‐bearing nanoscale multiphasic assemblages in the CM chondrites Murchison and Murray

Meteoritics &Planetary Science, EarlyView.
Abstract Carbonaceous chondrites contain phosphorus, whose speciation and thus history remain to be investigated. Phosphorus/sulfur‐bearing assemblages have been reported in carbonaceous CM chondrites, but there is no consensus about their exact compositions and origins.
Valentine Megevand, Sylvain Bernard, Corentin Le Guillou, Roberto Conconi, François Guyot   +4 more
wiley   +1 more source

Waste‐Derived Onion‐Like Carbon Nanoparticles/Recycled Silicon Composite for Sustainable High‐Performance Lithium‐Ion Batteries

ChemElectroChem, Volume 13, Issue 16, 18 August 2026.
Recycled silicon and waste rubber are upcycled into a high‐performance Si/C composite anode for lithium‐ion batteries. Uniformly distributed onion‐like carbon nanoparticles form a conductive and mechanically robust buffer that accommodates silicon volume expansion, enhancing electrochemical performance and cycling stability while providing a ...
Mohsen Hajian Foroushani, Rasoul Khayyam Nekouei, Samane Maroufi, Zain Ul Abideen, Veena Sahajwalla   +4 more
wiley   +1 more source