中文摘要：

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。

英文摘要：

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.