Zobrazeno 1 - 10 of 442 pro vyhledávání: '"W. Anwand"'
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Akademický článek
Induced conductivity in sol-gel ZnO films by passivation or elimination of Zn vacancies
Autor: D. J. Winarski, W. Anwand, A. Wagner, P. Saadatkia, F. A. Selim, M. Allen, B. Wenner, K. Leedy, J. Allen, S. Tetlak, D. C. Look
Publikováno v: AIP Advances, Vol 6, Iss 9, Pp 095004-095004-10 (2016)
Undoped and Ga- and Al- doped ZnO films were synthesized using sol-gel and spin coating methods and characterized by X-ray diffraction, high-resolution scanning electron microscopy (SEM), optical spectroscopy and Hall-effect measurements. SEM measure
Externí odkaz: https://doaj.org/article/eb0f906fe09c4c61a235ad65f1a0506a
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3
Threshold concentration for ion implantation-induced Co nanocluster formation in TiO 2 :Co thin films
Autor: Andreas Wagner, Maik Butterling, Roman Böttger, W. Anwand, Oguz Yildirim, S. Cornelius, A. Smekhova, Kay Potzger, C. Bähtz
Publikováno v: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. :13-16
Structural, defect and magnetic properties of the TiO2:Co films are investigated. We varied the maximum Co+-implantation concentration from 0.5 at.% up to 5 at.%. A concentration window, which is considered as a threshold for the formation of metalli
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1be6fa9e104b6cf649c20ba82798f934
https://doi.org/10.1016/j.nimb.2016.11.009
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4
Vacancy cluster in ZnO films grown by pulsed laser deposition
Autor: W. Anwand, Shichen Su, Maik Butterling, Andreas Wagner, Cuong Ton-That, Matthew R. Phillips, Caiqin Luo, Francis Chi-Chung Ling, Muhammad Younas, Zilan Wang, M. Azizar Rahman
Publikováno v: Scientific Reports
Scientific Reports 9(2019), 3534
Scientific Reports, Vol 9, Iss 1, Pp 1-10 (2019)
Undoped and Ga-doped ZnO films were grown on c-sapphire using pulsed laser deposition (PLD) at the substrate temperature of 600 °C. Positron annihilation spectroscopy study (PAS) shows that the dominant VZn-related defect in the as-grown undoped ZnO
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::42fa1a5a4c83c077abd0effab69b0801
https://doi.org/10.1038/s41598-019-40029-3
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5
Porosity in Ce4+ and Mg2+ doped zirconia nanomaterials
Autor: O. Melikhova, Tetyana Konstantinova, F. Lukac, Igor Danilenko, Jakub Cizek, Ivan Procházka, W. Anwand, G. Brauer, Petr Hruška, M. O. Liedke
Publikováno v: INTERNATIONAL CONFERENCE ON SCIENCE AND APPLIED SCIENCE (ICSAS) 2019.
Investigation of zirconia nanopowders, doped with metal cations of different valence (Mg2+, Ce4+), and ceramics, obtained by sintering these nanopowders, will be reported. The nanopowders were prepared by the co- precipitation method. The Doppler bro
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cf2190f37912fc789c9ece30f3ff09cf
https://doi.org/10.1063/1.5135852
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6
Effects of Substrate and Post-Growth Treatments on the Microstructure and Properties of ZnO Thin Films Prepared by Atomic Layer Deposition
Autor: Andreas Wagner, Pooneh Saadatkia, Kevin D. Leedy, Micah Haseman, W. Anwand, David Winarski, David C. Look, Farida Selim, S. Tetlak
Publikováno v: Journal of Electronic Materials. 45:6337-6345
Aluminum-doped zinc oxide (ZnO:Al) thin films were synthesized by atomic layer deposition on silicon, quartz and sapphire substrates and characterized by x-ray diffraction (XRD), high-resolution scanning electron microscopy, optical spectroscopy, con
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3b9db660203e38a5d398eeea5038b8e4
https://doi.org/10.1007/s11664-016-5025-0
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Defects in zinc oxide grown by pulsed laser deposition
Autor: Shichen Su, Andreas Wagner, Chongxin Shan, Muhammad Younas, Lok Ping Ho, Zilan Wang, Francis Chi-Chung Ling, W. Anwand
Publikováno v: Physica B: Condensed Matter. 480:2-6
ZnO films are grown on c-plane sapphire using the pulsed laser deposition method. Systematic studies on the effects of annealing are performed to understand the thermal evolutions of the defects in the films. Particular attention is paid to the discu
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::33e4aa58d657a801b38031603d947c6e
https://doi.org/10.1016/j.physb.2015.09.034
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9
Zn-vacancy related defects in ZnO grown by pulsed laser deposition
Autor: Caiqin Luo, Andreas Wagner, W. Anwand, Fcc C. C. Ling, Zilan Wang
Publikováno v: SPIE Proceedings.
Undoped and Ga-doped ZnO (002) films were grown c-sapphire using the pulsed laser deposition (PLD) method. Znvacancy related defects in the films were studied by different positron annihilation spectroscopy (PAS). These included Doppler broadening sp
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0ef7eb009bb3f0d399c7b3794c6928bf
https://doi.org/10.1117/12.2267186
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10
Positronium probing of pores in zirconia nanopowders
Autor: Tetyana Konstantinova, Oksana Melikhova, W. Anwand, Igor Danilenko, Maciej Oskar Liedke, J. Cizek, Ivan Procházka, František Lukáč, Petr Hruška
Publikováno v: 12th International Workshop on Positron and Positronium Chemistry, 28.08.-01.09.2017, Lublin, Poland
Acta Physica Polonica A 132(2017)2, 1564-1567
Zirconium di-oxide (ZrO2 , zirconia) receives nowadays a big attention because of a variety of advantageous properties which make zirconia-based materials useful in numerous fields of practice, in particular, in ceramic industry and other high-temper
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::91320a675c67620ea208b053845f6459
https://www.hzdr.de/publications/Publ-26647-1
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