Synthesis and spectral properties of Nd-doped glass-ceramics in SiO_2-CaO-MgO system prepared by sol-gel method

查看全文 作　　者：Masoud [1]Eslami;Zohreh [2]Hamnabard;Ali [1]Nemati

机构地区：[1]Materials Science & Engineering Department,Sharif University of Technology;[2]Materials Research School,Ceramic Group

出　　处：《Journal of Rare Earths》索引2013年第31卷第6期,共5页

基　　金：supported by the Iran Nanotechnology Initiative Council(INIC) 摘　　要：SiO2-CaO-MgO glass and glass-ceramic powder doped with Nd3+ were synthesized with sol-gel method.Tetraethylorthosilicate (TEOS),Ca(NO3)2·4H2O,Mg(NO3)2·6H2O,Nd(NO3)3·6H2O,ethanol,distilled water,and HNO3 were used as starting materials.The synthesized powder's properties were examined with simultaneous thermal analysis (STA),X-ray diffraction (XRD),photoluminescence (PL) and scanning electron microscopy (SEM) analysis.The STA curves showed that the softening point and crystallization temperatures were shifted to higher temperatures with increasing dopant content.Regarding XRD patterns of glass samples,Nd was found to act as an intermediate oxide in glass matrix.The XRD patterns of glass-ceramic samples indicated that bredigite and akermanite crystallized in the glass matrix after heat treating at 900 oC.The fluorescence spectra showed that glass-ceramics emitted much stronger irradiation than glasses with the same dopant content.The SEM images illustrated uniform and homogeneous distribution of applied oxides in glass and glass-ceramic compositions. 关键词：玻璃陶瓷凝胶法光谱性质合成掺钕溶胶 X射线衍射图 X-射线衍射仪

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Synthesis and spectral properties of Nd-doped glass-ceramics in SiO_2-CaO-MgO system prepared by sol-gel method

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