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Chemical state
About: Chemical state is a research topic. Over the lifetime, 2378 publications have been published within this topic receiving 78183 citations.
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TL;DR: MIST did not exhibit any chemical separation or increased structural instability during either phase-change, as determined with high-resolution x-ray photoelectron spectroscopy, Apparently, doped Mn atoms can be induced with movement of only In atoms.
Abstract: We fabricated and characterized the material with Mn (10 at.%: atomic percent) doped In3Sb1Te2 (MIST) using co-sputtering and synchrotron radiation, respectively. The MIST thin film showed phase-changes at 97 and 320°C, with sheet resistances of ~10 kΩsq (amorphous), ~0.2 kΩsq (first phase-change), and ~10 Ωsq (second phase-change). MIST did not exhibit any chemical separation or increased structural instability during either phase-change, as determined with high-resolution x-ray photoelectron spectroscopy. Chemical state changes were only depended for In without concomitant changes of Sb and Te. Apparently, doped Mn atoms can be induced with movement of only In atoms.
1 citations
01 Jan 1972
1 citations
TL;DR: In this paper, the chemical interaction occurring between zinc selenide vapour and a (100) germanium surface has been investigated by a molecular beam technique, and mass spectrometry is used to observe the reaction products by the interaction.
Abstract: The chemical interaction occurring between zinc selenide vapour and a (100) germanium surface has been investigated by a molecular beam technique. Two different chemical states of the germanium surface have been employed in the study of this interaction. In one state the germanium was prepared so as to produce a clean, restructured (100) germanium surface; in the other, the clean, restructured surface was covered with an adsorbed monolayer of oxygen. The method by which these surfaces were achieved is discussed and mass spectrometry is used to observe the reaction products by the interaction between the zinc selenide and the germanium surface.
1 citations
TL;DR: First results obtained with both techniques for a Rh-colloid show that the metal is mainly present in the zerovalent chemical state, but the spectra indicate further chemical states of Rh which can be assigned to the outermost metal atoms of the colloid interacting with organic ligands or to the educt Rh-halides.
Abstract: Transition metal colloids are potential precursors of heterogeneous catalysts with application to selective chemical reactions. Sample preparation techniques are described. Experimental details are given of the characterization of these often air-sensitive particles by X-ray photoelectron and X-ray absorption spectroscopy. First results obtained with both techniques for a Rh-colloid show that the metal is mainly present in the zerovalent chemical state. But the spectra indicate further chemical states of Rh which can be assigned to the outermost metal atoms of the colloid interacting with organic ligands or to the educt Rh-halides.
1 citations
1 citations