【摘要】 用蒸发溶液法生长了一系列KNd_xLn_1-xP₄O₁₂晶体（其中Ln=La、Gd、Y）,测定了所生长晶体的x射线衍射图,用计算机计算了它们的晶格常数。结果表明,随着La³⁺的含量增加晶胞体积增大,而随着Gd²⁺或Y³⁺的含量增加晶胞体积减小。测定了KNd_xLn_1-xP₄O₁₂晶体的红外光谱、荧光光谱和荧光寿命。其荧光寿命随着Ln³⁺离子浓度的增加而增加。更多还原

【Abstract】 A series oi KNdxLn1-xP4O12 crystals were grown by the evaporation solution method, The x-ray diffraction patterns of KNdxLn1-xP4O12 were measured and their lattice parameters were computed by the computer. It is shown that the cell volume increased when the content of la3+ ions in the crystal increased and it decreased while the content of Gd3+or Y3+ ions increased. The infrared spectra, flu-orescense spectra and lifetime of KNdx Ln1-x P4O12 were measured. Their fluoresence lifetime increased with increasing concentration of Ln3+ ions.更多还原