|
*data for ICSD #78053
Coll Code 78053
Rec Date 1995/10/17
Chem Name Gadolinium Scandium Aluminium Oxide (2.9/1.8/3.2/11.8)
Structured Gd2.9 Sc1.8 Al3.18 O11.82
Sum Al3.18 Gd2.9 O11.82 Sc1.8
ANX A16B23C24X95
D(calc) 5.66
Title A structural study of facet and off-facet parts of rare-earth
garnets, Gd3Sc2Al3O12, Gd3Sc2Ga3O12, and La3Lu2Ga3O12
Author(s) Yamazaki, S.;Marumo, F.;Tanaka, K.;Morikawa, H.;Kodama, N.;Kitamura,
K.;Miyazawa, Y.
Reference Journal of Solid State Chemistry
(1994), 108, 94-98
Unit Cell 12.3926(2) 12.3926(2) 12.3926(2) 90. 90. 90.
Vol 1903.21
Z 8
Space Group I a -3 d
SG Number 230
Cryst Sys cubic
Pearson cI158
Wyckoff h d c a
R Value .0119
Red Cell I 10.732 10.732 10.732 109.471 109.471 109.471 951.606
Trans Red 0.500 0.500 -0.500 / -0.500 0.500 0.500 / 0.500 -0.500 0.500
Comments Total SOF on at least one site differs from unity (SOF <
0.997 resp. SOF > 1.003)
The structure has been assigned a PDF number (calculated
powder diffraction data): 01-082-1949
Temperature in Kelvin: 296
Structure type : Al2Ca3Si3O12
X-ray diffraction from single crystal
Atom # OX SITE x y z SOF H
Gd 1 +3 24 d 0.375 0 0.25 0.968(3) 0
Sc 1 +3 24 d 0.375 0 0.25 0.032 0
Sc 2 +3 16 a 0 0 0 0.850(5) 0
Al 1 +3 16 a 0 0 0 0.15 0
Al 2 +3 24 c 0.125 0 0.25 0.960(5) 0
O 1 -2 96 h -.03220(7) 0.05503(7) 0.15578(7) 0.985(12) 0
Lbl Type U11 U22 U33 U12 U13 U23
Gd1 Gd3+ 0.00375(3) 0.00550(2) 0.00550(2) 0 0 0.00109(3)
Sc1 Sc3+ 0.003785(3) 0.00550(2) 0.00550(2) 0 0 0.00109(3)
Sc2 Sc3+ 0.00435(8) 0.00435(8) 0.00435(8) -.00024(7) -.00024(7) -.00024(7)
Al1 Al3+ 0.00435(8) 0.00435(8) 0.00435(8) -.00024(7) -.00024(7) -.00024(7)
Al2 Al3+ 0.00378(23) 0.00516(17) 0.00516(17) 0 0 0
O1 O2- 0.00584(26) 0.00683(26) 0.00608(26) -.00046(22) 0.00051(20) 0.00112(21)
*end for ICSD #78053 |
|