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Synthesis and characteristics of nanocrystalline materials in Ti, B, C and N containing system

100%
Biedunkiewicz A., Figiel P., Gabriel U., Sabara M., Lenart S.
Open Physics
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2011
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vol. 9
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issue 2
417-422
EN
In this work, the results of investigations of manufacturing ceramic materials on the basis of Ti, B, C and N containing systems are presented. The nanocrystalline ceramics were synthesized using a non-hydrolytic sol-gel method. The process was carried out in two stages. In the first low-temperature stage the precursor was obtained. The synthesis of ceramic phases, however, was conducted in the second high-temperature stage, in an argon atmosphere. Depending on the initial composition of the mixtures, the temperature and the time, the following products were obtained: TiCx, TiCxN1−x, TiB2 and B4C. The course of the process was investigated by thermogravimetric and differential scanning calorimetry methods (TG-DSC) coupled with mass spectrometry (MS). The solid state products were identified with use of X-ray diffraction (XRD). The size of the crystallites was estimated by the Scherrer method. The structure and morphology images of nanocrystalline powders were obtained using scanning electron microscopy (SEM) and transmission electron microscopy (TEM).
2
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Thermal Effect of Er³⁺ Ions Embedded in Smart Nano-Composite Oxide Material Prepared by Sol-Gel Technique

86%
Battisha I., Ayoub M., Hashem A., Ahmed E., Amin A.
Acta Physica Polonica A
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2017
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vol. 132
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issue 4
1277-1283
EN
The phosphosilicate for planar waveguides fabrication by using sol-gel, and particularly erbium-doped waveguide amplifiers, is reviewed. In particular, efforts to use sol-gel to improve molecular homogeneity in Er-doped phosphosilicate-based monolith and thin films will be discussed. A variety of material studies was carried out to investigate and optimize the sample preparation condition for such application. These include X-ray diffraction, the Fourier transform infrared and optical transmittance, absorption and refractive index calculation. The erbium nitrate precursors use is shown to alter the Er³⁺ ions doping in the prepared samples thermally treated in the final monolith glass form, in comparison to the use of thin film phosphosilicate sol-gel sample. Excess heat treatment is used to force prepared samples crystallization, moreover resulting photoluminescence analysis is used to detect the co-operative-up-conversion sample properties before and after heating.
3
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Characteristics of GZO/IZO Dual-Layer as an Electron Transport Layer in Dye-Sensitized Solar Cell

86%
Hossein Manzari Tavakoli M., Ahmadi M., Sabet M.
Archives of Metallurgy and Materials
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2018
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vol. 63
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issue 4
4
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Examination of Sol-Gel Derived Hydroxyapatite Enhanced with Silver Nanoparticles using OCT and Raman Spectroscopy

86%
Głowacki M. J., Gnyba M., Strąkowska P., Gardas M., Kraszewski M., Trojanowski M., Strąkowski M. R.
Metrology and Measurement Systems
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2017
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vol. 24
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issue 1
5
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Influence of calcination temperature on optical and structural properties of TiO2 thin films prepared by means of sol-gel and spin coating

72%
Tański T., Matysiak W., Kosmalska D., Lubos A.
Bulletin of the Polish Academy of Sciences: Technical Sciences
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2018
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issue 2
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