Crystallization and local environment of rare-earth ions in oxy-fluoride nanostructured glasses
Crystallization and local environment of rare-earth ions in oxy-fluoride nanostructured glasses
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DOI：
10.1016/j.jnoncrysol.2005.05.022
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发表时间：
2005-08
影响因子：
3.5
通讯作者：
Chao Liu;Jong Wan Hong;J. Heo
中科院分区：
文献类型：
--
作者：
Chao Liu;Jong Wan Hong;J. Heo
以掺稀土离子的氧氟化物前驱体玻璃为原料制备了透明纳米结构玻璃。利用位选择光谱和声子边带光谱分析稀土离子的局部环境表明，稀土离子优先结合到热处理后形成的β- pbf2纳米结构晶体中。Tm3+和Ho3+离子的不同能级和发射强度的寿命随着玻璃基体内纳米结构晶体的形成而增加。
Transparent nanostructured glasses were prepared from an oxy-fluoride precursor glass doped with rare-earth ions. Analysis of the local environment of rare-earth ions using site-selective and phonon sideband spectroscopies indicated that rare-earth ions were preferentially incorporated into β-PbF2nanostructured crystals formed upon heat-treatment. Lifetimes of various energy levels and emission intensities in Tm3+and Ho3+ions increased with the formation of nanostructured crystals inside the glass matrix.