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Thermal Effect of Er³⁺ Ions Embedded in Smart Nano-Composite Oxide Material Prepared by Sol-Gel Technique

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Battisha I., Ayoub M., Hashem A., Ahmed E., Amin A.

Acta Physica Polonica A

2017

vol. 132

issue 4

1277-1283

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.

FTIR Study of Nanostructure Perovskite BaTiO_3 Doped with Both Fe^{3+} and Ni^{2+} Ions Prepared by Sol-Gel Technique

100%

Abdel Aal A., Hammad T., Zawrah M., Battisha I., Abou Hammad A.

vol. 126

issue 6

1318-1321

Pure barium titanate BaTiO_3 (BT) and BT doped with two different transition elements Fe^{3+} and Ni^{2+} at 5 mol.% (BT5Fe and BT5Ni, respectively) as constant concentration in powder form have been prepared by sol-gel method using barium acetate, titanium(IV) n-butoxide, iron and nickel nitrates as precursor materials. The microstructure of BT and the influence of Fe and Ni dopants on it were investigated by X-ray diffraction and Fourier transform infrared spectroscopy. X-ray diffraction shows that tetragonal phase is dominant for pure BT sintered for 4 h at 800°C. Scanning electron microscopy and transmission electron microscopy were used to study surface morphology and particle size distribution for BT5Fe and BT5Ni, respectively. The presence of hydroxyl defects were verified by Fourier transform infrared spectroscopy for (BaTi_{1-x}Fe_{x}O_{3-x/2}) (BT_xFe), where x=0.005, 0.01, 0.05, and 0.07 and (BaTi_{1-x}Ni_{x}O_{3-x/2}) (BT_xNi), where x=0.005, 0.01, 0.03, 0.05, and 0.07.

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2 Acta Physica Polonica A

1 2017

1 2014

2 Battisha I.

1 Abdel Aal A.

1 Abou Hammad A.

1 Ahmed E.

1 Amin A.

1 Ayoub M.

1 Hammad T.

1 Hashem A.

1 Zawrah M.

Search results

Thermal Effect of Er³⁺ Ions Embedded in Smart Nano-Composite Oxide Material Prepared by Sol-Gel Technique

FTIR Study of Nanostructure Perovskite BaTiO_3 Doped with Both Fe^{3+} and Ni^{2+} Ions Prepared by Sol-Gel Technique