Synthesis and characterization of nanocrystalline Nd3+-doped gadolinium scandium aluminum garnet powders by a gel-combustion method |
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| Authors: | Jing Su Ju-hong Miao Lin-hua Xu Yu-qing Ji Chu-qin Wang |
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| Affiliation: | 1. Institute of Physics AS CR, Cukrovarnicka 10, 16253 Prague, Czech Republic;2. Peter the Great Saint-Petersburg Рolytechnic University, Polytekhnicheskaya 29, 195251 St. Petersburg, Russia;3. Charles University, Faculty of Mathematics and Physics, Ke Karlovu 5, 12116 Prague, Czech Republic;4. Institute of Physics, University of Tartu, Ravila 14c, 50411 Tartu, Estonia;1. Laboratoire de Physique Appliquée, Faculté des Sciences, B.P. 1171, 3000 Sfax, Université de Sfax, Tunisia;2. I3N and Physics Department, University of Aveiro, 3810-193 Aveiro, Portugal;1. Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, Grudziadzka 5, 87-100 Torun, Poland;2. Institute of Microelectronics and Optoelectronics, Koszykowa 75, 00-662 Warsaw, Poland;3. Institute of Electronic Materials Technology, Wolczynska 133, 01-919 Warsaw, Poland |
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| Abstract: | Nd3+-doped gadolinium scandium aluminum garnet (Nd:GSAG) precursor was synthesized by a gel combustion method using metal nitrates and citric acid as raw materials. The structure and morphology of the precursor and the sintered powders were studied by means of X-ray diffraction (XRD), infrared spectroscopy (IR) and transmission electron microscopy (TEM). The results showed that the precursor transformed into pure GSAG polycrystalline phase at about 800 °C, and the powders sintered at 800–1000 °C were well-dispersed with average particle sizes in the range of 30–80 nm. Optical properties of Nd:GSAG nano-powders were characterized by using photoluminescence spectroscopy. The highest photoluminescence intensity was achieved for the powder sintered at 900 °C. |
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