Zobrazeno 1 - 10
of 233
pro vyhledávání: '"Klaus-Dieter Becker"'
Autor:
Evgeny Alexandrovich Kiselev, Piotr Gaczynski, Götz Eckold, Armin Feldhoff, Klaus-Dieter Becker, Vladimir Alexandrovich Cherepanov
Publikováno v:
Chimica Techno Acta, Vol 6, Iss 2, Pp 51-71 (2019)
The room-temperature (RT) 57Fe Mössbauer spectra of the La3Ni2−xFexO7±δ oxide solid solutions of Ruddlesden-Popper-type (x = 0.05, 0.10) reveal two doublets for Fe3+ ions in octahedral coordination by oxygen. The existence of two inequivalent si
Externí odkaz:
https://doaj.org/article/04e052c7b547433991dee868b66c88d4
Autor:
Klaus-Dieter Becker, Vladimir Šepelák, Rafael Santiago Trautwein, Horst Hahn, Klebson Lucenildo Da Silva
Publikováno v:
Zeitschrift für Physikalische Chemie. 236:697-712
Nanocrystalline mullite-type bismuth-bearing complex oxides Bi2(M0.5Al0.5)4O9 (M=Fe3+, Ga3+) are prepared by high-energy ball milling of the corresponding microcrystalline counterparts. An unusual five-fold coordination of metal cations is revealed i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::56fa699506b702b0fcd75ad7a0d5328b
https://doi.org/10.1515/zpch-2021-3101
https://doi.org/10.1515/zpch-2021-3101
Publikováno v:
Solid State Ionics. 380:115919
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dd41ecd8b71a6989317e774907bd9d45
https://doi.org/10.1016/j.ssi.2022.115919
https://doi.org/10.1016/j.ssi.2022.115919
Publikováno v:
Solid State Ionics. 316:59-65
A 57 Fe Mossbauer study of mixed ionic electronic conducting (Ba 0.5 Sr 0.5 )(Co 0.8 57 Fe 0.08 Fe 0.12 )O 3− δ (BSCF) has been made on samples of different oxygen content. The room-temperature spectra are found to depend strongly on oxygen stoich
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dd0730a223d9a8f83fba7d22fa7ffab3
https://doi.org/10.1016/j.ssi.2017.12.005
https://doi.org/10.1016/j.ssi.2017.12.005
Publikováno v:
Defect and Diffusion Forum. 383:147-152
The model explaining the occurrence of the electron concentration step front during oxidation of nitrogen-doped TiO2-δ thin films is presented. This model is based on ambipolar chemical diffusion coefficient analysis, for which immobile and uniforml
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0df51c4d575a7957b8afa0cceec4eeed
https://doi.org/10.4028/www.scientific.net/ddf.383.147
https://doi.org/10.4028/www.scientific.net/ddf.383.147
Publikováno v:
Solid State Ionics. 315:98-101
Optical absorption and redox kinetics of YBa2Cu3O7 − δ thin films in oxidizing (O2) and reducing (Ar/H2) atmospheres were studied at temperatures from 200 °C to 500 °C by means of in situ UV–vis-NIR optical spectroscopy. The optical spectra in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5389873ee2679316ea81214c3da4744e
https://doi.org/10.1016/j.ssi.2017.12.002
https://doi.org/10.1016/j.ssi.2017.12.002
Publikováno v:
Solid State Ionics. 369:115659
An in-situ 57Fe Mossbauer study of mixed ionic electronic conducting (Ba0.5Sr0.5)(Co0.857Fe0.08Fe0.12)O3−δ (BSCF5582) has been made at temperatures up to 1000 °C. In the paramagnetic high-temperature phase (T ≥ 315 °C), quadrupolar interaction
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9bd3ff2d0cde7c633e1a126c14963f40
https://doi.org/10.1016/j.ssi.2021.115659
https://doi.org/10.1016/j.ssi.2021.115659
Autor:
Armin Feldhoff, Piotr Gaczynski, Klaus-Dieter Becker, Vladimir A. Cherepanov, E.A. Kiselev, Götz Eckold
Publikováno v:
Chimica Techno Acta; Том 6, № 2 (2019); 51-71
Chimica Techno Acta, Vol 6, Iss 2, Pp 51-71 (2019)
Chimica Techno Acta, Vol 6, Iss 2, Pp 51-71 (2019)
Received: 15.07.2019. Accepted: 01.08.2019. Published: 05.08.2019. The room-temperature (RT) 57Fe Mössbauer spectra of the La3Ni2–xFexO7±δ oxide solid solutions of Ruddlesden-Popper-type (x = 0.05, 0.10) reveal two doublets for Fe3+ ions in octa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ba1c9f03e202d4955627b7a9d4923d36
https://elibrary.ru/item.asp?id=41519798
https://elibrary.ru/item.asp?id=41519798
Publikováno v:
Zeitschrift für Naturforschung B. 71:447-455
Bi2Fe4O9was synthesized using a polyol-mediated method. X-ray powder diffraction (XRPD) revealed that the as-synthesized sample is nano-crystalline. During heating, the X-ray amorphous powder transformed into a rhombohedral perovskite-type bismuth fe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::73ccfd99553ac42571ed5c8e3f7c2846
https://doi.org/10.1515/znb-2015-0227
https://doi.org/10.1515/znb-2015-0227
Autor:
N. Martynyuk, D. Sugak, S. Ubizskii, Ya. Zhydachevskii, Yu. Suhak, Klaus-Dieter Becker, Oleh Buryy, U. Yakhnevych
Publikováno v:
Optical Materials. 99:109543
Results are reported of an in-situ investigation of optical absorption of iron-doped lithium niobate single crystals, LiNbO3:Fe, at high temperatures. LiNbO3:Fe has been exposed to treatments in reducing (95%Ar + 5%H2) and oxidizing (O2) atmospheres
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7c55fa445f57af8813d233a6f87490a9
https://doi.org/10.1016/j.optmat.2019.109543
https://doi.org/10.1016/j.optmat.2019.109543