【摘要】 研究了r_xRE_1-xP₅O₁₄(RE³⁺:La³⁺,Nd³⁺,Yb³⁺,Y³⁺,Ho³⁺,Tm³⁺,Lu³⁺;x=0.1～0.9)晶体的生长及其完整性。ErP₅O₁₄晶体在所有溶剂中是不溶的。测定和讨论了晶体中 Er³⁺离子的紫外和可见吸收光谱,荧光光谱及其红外光谱。ErP₅O₁₄晶体中有小的浓度猝灭,主要是源于Er³⁺离子间的交叉驰豫。红外光谱和 X射线分析表明晶体结构有三种:单斜Ⅰ(P₂₁/c),单斜Ⅱ（C₂/c）和正交晶系Ⅲ（Pmna）。更多还原

【Abstract】 The growth technology and perfection of crystals Er_xRE_1-xP₅O₁₄（RE:La,Nd,Yb,Y,Ho,Tm,Lu;x=0.1-0.9）have been investigated.Crystal ErP_sO₁₄is in solublein all conventional solvents.The ultraviolet and visible absorption spectra and the fluo-rescence and infrared spectra of Er³⁺were measured and discussed.A weak concentra-tion quenching,mainly due to energy transfer between Er³⁺ions,was observed.It wasshown by the infrared spectrum and X-ray diffraction pattern that the crystal ErP₅O₁₄can be classified into three types corresponding to nomoclinic-I(P₂₁/c),monoclinic-Ⅱ（C₂/c）and orthorhombic-Ⅲ（Pmna）.更多还原