Dy_xEr_(3-x)Al_5O_(12)稀土铝酸盐材料的固相合成  

Synthesis of Dy_xEr_(3-x)Al_5O_(12) Rare Earth Aluminate Materials by Solid-state Reaction Method

作　　者：彭鹏[1] 张雷[1] 喻翔[1] 房明浩[1] 刘正威[1] 陈树森[1] 尹少波[1] 

机构地区：[1]中国地质大学(北京)材料科学与工程学院,北京100083

出　　处：《人工晶体学报》2010年第4期993-996,1007,共5页Journal of Synthetic Crystals

基　　金：国家自然科学基金资助项目(No.50802091)

摘　　要：以Dy2O3、Er2O3、Al2O3氧化物为原料,利用固相合成法在1500～1700℃下合成了DyxEr3-xAl5O12(x=0、1、2、3)稀土铝酸盐材料。分析了其物相组成并初步探讨了其合成机理。结果表明:在1650～1700℃高温下,合成的产物完全转化为石榴石相,大量的稀土元素的引入不会对石榴石结构稳定性产生影响;随材料中Dy3+的浓度增加,随着x值增大,即材料中Dy3+的浓度增加,DyxEr3-xAl5O12石榴石结构的晶格常数增大。Using Dy2O3,Er2O3 and Al2O3 oxidative powders as raw materialsDyxEr3-xAl5O12（ x =0,1,2,3） rare-earth aluminate materials were synthesized by solid-state reaction method at 1500-1700 ℃. The synthesized samples were characterized by XRD and the sintering mechanism was analyzed preliminary. The results indicated that the samples convert to garnet under 1650-1700 ℃ and the structure of garnet is hardly destructed by a mass of rare-earth element. With the increase of concentration of Dy3 ＋ ,the lattice constant of DyxEr3-xAl5O12 garnet structure accretes regularly.

关 键 词：固相合成 稀土铝酸盐 石榴石 

分 类 号：TB332[一般工业技术—材料科学与工程]