Topic
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: In this article, the chemical state of ions in different samples of ceramics of the Ba1 − x = 0.2 system produced by varying only a single technological parameter (sintering temperature T = S) is studied by means of X-ray photoelectron spectroscopy.
Abstract: The chemical state of ions in different samples of ceramics of the Ba1 − x
Sr
x
TiO3 (x = 0.2) system produced by varying only a single technological parameter (sintering temperature T
S) is studied by means of X-ray photoelectron spectroscopy. The X-ray electron spectra of the Ba4d, Sr3d, O1s, and Ti2p levels reveal well-marked fine structures. As expected, the energy position and intensity of the features of this fine structure vary with T
S.
3 citations
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TL;DR: In this article, the authors showed that the volume of microdomains in which the Fe-O-Fe super-exchange interaction worked well increased as the Sr content increased, resulting in reduced activation energy of the small-polaron hopping.
3 citations
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TL;DR: In this paper, a new sulfur passivation method for GaAs, CH 3 CSNH 2 treatment, has been developed by Synchrotron Radiation Photoemission Spectroscopy (SRPES), the chemical states and electronic aspects of the passivated surfaces are investigated.
3 citations
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3 citations
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TL;DR: In this article, the doping process (homogenization and chemical state of dopant) was studied by SIMS and AES depth profiling, and the conditions of Ta diffusion into the SrTiO 3 layer were selected (1100°C, 40 h).
Abstract: The doping process (homogenisation and chemical state of dopant) was studied in this work by SIMS and AES depth profiling. The conditions of Ta diffusion into the SrTiO 3 layer were selected (1100°C, 40 h). The conductivity measurement of the SrTiO 3 doped with different Ta concentration proved that the Ta is a donor type dopant. The chemical state of the Ta in SrTiO 3 was analysed by XPS and proved that the Ti 4+ is replaced by Ta 5+ in SrTiO 3 .
3 citations