%0 Journal Article
%T Genetic Analysis of the Accompanying of (Lu,Y)3Al5O12:Ce in LuxY1-xAlO3:Ce Single Crystals<br>LuxY1-xAl 3:Ce晶体中伴生(Lu,Y3 Al5O12:Ce相成因研究
%A DING Dong-Zhou
%A LU Sheng
%A PAN Shang-Ke
%A ZHANG Wei-Dong
%A WANG Guang-Dong
%A REN Guo-Hao
%A <br>丁栋舟
%A 陆晟
%A 潘尚可
%A 张卫东
%A 王广东
%A 任国浩
%J 无机材料学报
%D 2008
%I Science Press
%X LuxY1-xAlO3:Ce single crystal samples were prepared by the Czochralski method. Based on X-ray diffraction (XRD) and composition analyses, and analysis of phase diagram of Lu2O 3-Al2O3 and the structural stability of LuxY1-xAlO3:Ce, it is supposed that as the content of Lu increase, the melt delamination is exacerbated, and the crystallization interval of Lux 1-xAlO3:Ce in the phase diagram may shift towards the interval rich in Lu, resulting in the accompaniment of (Lu,Y)3Al5O12:Ce on the top of LuxY1-xAlO3 :Ce single crystals. With the increase of the content of Lu, the thermal stability of LuxY1-xAlO3:Ce single crystals decreases, the oxygen vacancy in those crystals furthers the decrease, so the seed surface tends to decompose into (Lu,Y3 Al5O12:Ce and (Lu,Y)4Al2O9:Ce while seeding, and the former decomposition product provides the crystal nucleus to induce crystallization of (Lu,Y3Al 5O12:Ce, resulting in the accompaniment of (Lu,Y)3Al5O12:Ce on the coat of LuxY1-xAlO3:Ce single crystals. An adjustment of the melt composition to make the mol ratio n((Lu,Y)2O3):n(Al2O3) equal to 1.17--1.00, and a greater temperature gradient inside the melt and at the solid liquid interface to improve melt convection, restrain melt delamination and the decomposition on the seed surface may contribute to the acquisition of Lux Y1-xAlO3:Ce with high Lu content.
%K lutetium yttrium aluminate crystals
%K perovskite
%K garnet
%K accompany<br>铝酸钇镥晶体
%K 钙钛矿
%K 石榴石
%K 伴生
%K 晶体
%K 研究
%K Analysis
%K Genetic
%K 熔体对流
%K 改善
%K 温度梯度
%K 固液界面
%K 配料组成
%K 调整
%K 外表面
%K 晶核
%K 分解产物
%K 表面相
%K 反应生成
%K 相分解
%K 发生
%K 籽晶
%K 过程
%K 接种
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=ABC0063016AF57E1C73EF43C8D2212BD&aid=727C25FAB9A1F20391B0E73246D14E33&yid=67289AFF6305E306&vid=EA389574707BDED3&iid=38B194292C032A66&sid=E57FE519484CFB70&eid=BEE722AB5028E81F&journal_id=1000-324X&journal_name=无机材料学报&referenced_num=0&reference_num=17