Structural analysis of double borates with rare-earth and alkali-earth element by X-ray diffraction

X射线衍射法分析稀土和碱土元素双硼酸盐的结构

• 批准号: 23760003
• 负责人: SIMURA Rayko
• 金额: $ 2.5万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23760003/
• 关键词: 複ホウ酸塩; Ｘ線構造解析; 希土類元素; 希土類ほう酸塩; 光学材料; X線異常散乱; 結晶成長; X線構造解析

Basic features of A3R(BO3)3(A=Ba; R=Y, Sm-Yb) double borates were investigated with high-temperature X-ray structural analysis; R=Sm-Tb show H phase, R=Tm-Yb show L phase, and R=Dy,Ho,Y show H phase in high temperature and L phase in low temperature. Three cation sites (3a,3b, and 18f) in Sr3Y(BO3)3 were investigated by X-ray structural analysis with anomalous scattering, and the sites 3a was confirmed to be occupied by Y, 3b by Sr, and 18f by Sr/Y, suggesting the rare-earth doped element occupies 18f. Single crystal of Ce doped A3R(BO3)3 was grown by FZ method and the scintillation signal of the crystal excited by alpha-particles were clearly observed, suggesting the application as scintillator crystals.

用高温x射线结构分析研究了A3R(BO3)3（A=Ba； R=Y, Sm-Yb）双硼酸盐的基本特征；R=Sm-Tb为H相，R=Tm-Yb为L相，R=Dy,Ho，Y为高温H相，低温L相。对Sr3Y(BO3)3中的3个阳离子位（3a、3b和18f）进行了异常散射的x射线结构分析，3a位被Y占据，3b位被Sr占据，18f位被Sr/Y占据，表明稀土掺杂元素占据了18f。用FZ法生长了Ce掺杂的A3R(BO3)3单晶，观察到晶体在α粒子激发下的闪烁信号清晰，表明其作为闪烁晶体的应用前景。

项目成果

Crystal site determination of Sr in Sr_3YB_3O_9 by the anomalous X-ray scattering

反常X射线散射法测定Sr_3YB_3O_9中Sr的晶位

• 发表时间: 2013
• 作者: Simura;R.;Kawai;S.;Sugiyama;K.;Yanagida;T.;Shishido;T.;Yoshikawa;A.;Keiji Numata;R. Simura and K. Sugiyama
• 通讯作者: R. Simura and K. Sugiyama

Crystal site determination of Sr in Sr3YB3O9 by the anomalous X-ray scattering method

反常X射线散射法测定Sr3YB3O9中Sr的晶位

• 发表时间: 2013
• 作者: 千葉 聡;芝崎 祐二;藤森 厚裕;R Simura and K Sugiyama
• 通讯作者: R Simura and K Sugiyama

Valence state and scintillation properies of Ce-doped Sr3Y(BO3)3 crystal.

Ce掺杂Sr3Y(BO3)3晶体的价态和闪烁特性。

• 发表时间: 2013
• 期刊: Journal of Crystal Growth
• 影响因子: 1.8
• 作者: R. Simura;S. Kawai;K. Sugiyama;T. Yanagida;T. Sugawara;T. Shishido;A. Yoshikawa
• 通讯作者: A. Yoshikawa

Growth and Optical Properties of Ce-doped Strontium Yttorium Double Borate

Ce掺杂锶钇双硼酸盐的生长和光学性质

• 发表时间: 2011
• 作者: R. Simura;S. Kawai;K. Sugiyama;T. Yanagida;T. Shishido;and A. Yoshikawa
• 通讯作者: and A. Yoshikawa

Valence state of dopant and scintillation properties of Ce-doped Sr3Y(BO3)3 crystal

• DOI: 10.1016/j.jcrysgro.2011.11.089
• 发表时间: 2013
• 期刊: Journal of Crystal Growth
• 影响因子: 1.8
• 作者: R. Simura;Shohei Kawai;K. Sugiyama;T. Yanagida;T. Sugawara;T. Shishido;A. Yoshikawa