Synthesis and Crystal Structure Analysis of Multinary Germanates and Stanates Containing Rare-earth Elements

含稀土元素多元锗酸盐和锡酸盐的合成及晶体结构分析

• 批准号: 17360316
• 负责人: YAMANE Hisanori
• 金额: $ 10.12万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2005
• 资助国家: 日本
• 起止时间: 2005 至 2007
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17360316/
• 关键词: Oxide Ceramics; Novel compounds; Crystal Structure Analysis; Powder X-ray Diffraction; Single Crystal X-ray Diffraction; Solid State Reaction; Luminescence Properties; Stanate Compounds; 多元系酸化物; 単結晶; セラミックス; 単結晶構造解析; ゲルマニウム酸塩; 金属酸化物

New compounds CaY_2Ge_3O_<10>, CaY_2Ge_4O_<12>, Ca_<0.8>Y_<2.4>Sn_<0.8>O_6, Ca_<1.5>Eu_3Sn_<0.5>O_7 were synthesized in the systems of rare-earth-Ca-Ge/Sn-O by solid state reaction at 1000 - 1500℃ in air. Single crystals of these compounds were obtained by annealing or by slow cooling of partially melted samples. The crystal structures of these new compounds were analyzed by the single crystal X-ray diffraction method. CaY_2Ge_4O_<12> is isotypic with SrNa_2P_4O_<12>, CaY_2Ge_3O_<10> crystallizes in a novel structure where Ca and Y atoms are situated disorderly in three 7-fold coordination sites between isolate germinate groups of triple GeO4 tetrahedra, Ca_<0.8>Y_<2.4>Sn_<0.8>O_6 is isotypic with Mg_3TeO_6, and Ca_<1.5>Eu_3Sn_<0.5>O_7 crystallizes in a novel structure which is related to the structure of B-form Eu_2O_3.Ca_<0.8>(Y_<1-x>Eu_x)_<2.4>Sn_<0.8>O_6 (0.0〓x<0.3) Ca_<0.8>Y_<2.4>Sn_<0.8-y>Ti_yO_6 (0.0〓y〓0.24) and Ca_<0.8>(Y_<0.9>)Eu_<0.1>)_<2.4>Sn_<0.8-y>Ti_yO_6(0.0〓y〓0.16) were prepared and investigated their luminescence properties. Under ultraviolet light irradiation of 250-264 nm, Ca_<0.8>(Y_<0.9>)Eu_<0.1>)_<2.4>Sn_<0.72>Ti_<0.08>O_6 and Ca_<0.8>(Y_<0.9>Eu_<0.1>)_<2.4>Sn_<0.8>O_6 showed bright red emission of 614 nm due to the ^5Do^<-7>F_2 transition of Eu^<3+>. A broad emission peak of Ti^<4+> centered at 450 nm was observed for Ca_<0.8>Y_<2.4>Sn_<0.72>Ti_<0.08>O_6, suggesting the possibility of energy transfer from Ti^<4+> to Eu^<3+>.

在稀土-Ca-Ge/SnO体系中，通过1000-1500℃的固相反应，在空气中合成了新化合物CaY_2Ge_3O_&lt；10&gt；，CaY_2Ge_4O_&lt；12&gt；，Ca_&lt；0.8&gt；Sn_&lt；0.8&gt；O_6，Ca_&lt；1.5&gt；Eu_3SN_&lt；0.5&gt；O_7。这些化合物的单晶是通过部分熔融样品的退火或缓慢冷却获得的。用单晶X-射线衍射法分析了这些新化合物的晶体结构。CaY_2Ge_4O_&lt；12&gt；与SrNa_2P_4O_&lt；12&gt；，CaY_2Ge_3O_&lt；10&gt；以一种新的结构结晶，其中Ca和Y原子无序地位于三个GeO_4四面体发芽基团之间的三个七重配位上，Ca_&lt；0.8&gt；Y_&lt；2.4&gt；Snt_&lt；0.8&gt；O_6与Mg_3TeO_6同型，以及Ca_&lt；1.5&gt；Eu_3SN_(0.5)&Gt；O_7晶体结构与B型Eu_2O_3.Ca_&lt；0.8&gt；(Y_&lt；1-x&gt；Eu_x)_&lt；2.4&gt；Sn_&lt；0.8&gt；O_6(0.0〓x&lt；0.3)Ca_&lt；0.8&gt；Y_&lt；2.4；制备了0.8-y&GT；TiyO6(0.0〓y〓0.24)和TiYO6，并研究了它们的发光性能。在250-264 nm紫外光照射下，Ca_&lt；0.8&gt；(Y_&lt；0.9&gt；)Eu_&lt；0.1&gt；)_&lt；2.4&gt；Sn_&lt；0.72&gt；Ti_&lt；0.08&gt；O_6和Ca_&lt；0.8&gt；(Y_&lt；0.9&gt；Eu_&lt；0.1&gt；)_&lt；2.4&gt；Sn_&lt；由于Eu^&lt；3+&gt；的^5Do^&lt；-7&gt；F_2跃迁，0.8&gt；O_6显示出614 nm的明亮红光发射。在Ca_&lt；0.8&gt；Y_&lt；2.4&gt；Sn_&lt；0.72&gt；Ti_&lt；0.08&gt；O_6，中观察到了位于450nm处的宽发光峰，表明Ti~(2+)&lt；4+&gt；有可能向Eu~(2+)&lt；3+&gt；转移能量。

项目成果

Ca_<1.5>Eu_3Sn_<0.5>O_7 : a calcium europium tin oxide with a novel structure

Ca_<1.5>Eu_3Sn_<0.5>O_7：一种具有新颖结构的钙铕锡氧化物

• 发表时间: 2007
• 期刊: Acta Crystallographica, Section C 63・1
• 作者: Y.Kaminaga;et al.
• 通讯作者: et al.

Preparation and luminescence properties of Ca_<2-x>Sn_<1-x>(Y, Eu)_<x>O_4

Ca_<2-x>Sn_<1-x>(Y,Eu)_<x>O_4的制备及发光性能

• 发表时间: 2006
• 作者: Yusuke. Kaminaga;ed. al.
• 通讯作者: ed. al.

Quaternary compounds prepared in a CaO-Y2O3-SnO2 system

• DOI: 10.1111/j.1551-2916.2007.01712.x
• 发表时间: 2007-06
• 期刊: Journal of the American Ceramic Society
• 影响因子: 3.9
• 作者: Yusuke Kaminaga;H. Yamane;Takahiro Yamada

Synthesis and crystal structures of CaY2Ge3O10 and CaY2Ge4O12

• DOI: 10.1016/j.jssc.2005.10.023
• 发表时间: 2006
• 期刊: Journal of Solid State Chemistry
• 影响因子: 3.3
• 作者: H. Yamane;R. Tanimura;Takahiro Yamada;J. Takahashi;T. Kajiwara;M. Shimada

Preparation and luminescence properties of Eu and Ti co-doped oxides in Ca-Y-Sn-O system

Ca-Y-Sn-O体系Eu、Ti共掺杂氧化物的制备及发光性能

• 发表时间: 2008
• 作者: Yusuke. Kaminaga;ed. al.
• 通讯作者: ed. al.