THE CRYSTAL-STRUCTURE OF DELTA-YTTRIUM PYROSILICATE, DELTA-Y2SI2O7

被引：28

作者：

DIAS, HW ^{[1
]}

GLASSER, FP ^{[1
]}

GUNWARDANE, RP ^{[1
]}

HOWIE, RA ^{[1
]}

机构：

[1] UNIV ABERDEEN,DEPT CHEM,MESTON WALK,OLD ABERDEEN AB9 2UE,SCOTLAND

来源：

ZEITSCHRIFT FUR KRISTALLOGRAPHIE | 1990年 / 191卷 / 1-2期

关键词：

Crystal structure; Pyrosilicate; Yttriun;

D O I：

10.1524/zkri.1990.191.1-2.117

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

The single crystal structure of the high temperature phase, Y2Si2O7, has been established by X-ray diffraction. Crystal data: Y2Si2O7, M=346.0; orthorhombic, Pnam, a=13.655(5), b=5.016(3), c=8.139(3)ÅV=557.5Å3, Dx=4. 121g cm−3, Z=4. λ(Mo-Kα)=0.71069Å, μ(Mo—Kα)=21.2 mm−1, F(000)=648 electrons, room temperature; R=0.077 for 294 reflections. The structure proves to be similar to that proposedin the space group Pna2, for Gd2Si2O7 by Smolin and Shepelev (Acta Crystallogr. 26B (1970) 484—492). The present work suggests that the space group Pnam provides ana dequate representation of this structure type in the case of Y2Si2O7. © by R. Oldenbourg Verlag

引用

页码：117 / 123

页数：7