Hi Ozhan,
This is what I found in the ICSD Data Base. :
In the paper you will find other mixtures ranging from Ca0.1Sr0.9 to Ca0.8Sr0.2
*data for ICSD #75564
Coll Code 75564
Rec Date 1996/04/22
Mod Date 1999/01/19
Chem Name Strontium Calcium Ruthenate(IV) (0.5/0.5/1)
Structured (Sr0.5 Ca0.5) (Ru O3)
Sum Ca0.5 O3 Ru1 Sr0.5
ANX ABX3
Min Name Perovskite
D(calc) 5.99
Title Structural characterization of the orthorhombic perovskites: (A Ru O3
(A= Ca, Sr, La, Pr))
Author(s) Kobayashi, H.;Nagata, M.;Kanno, R.;Kawamoto, Y.
Reference Materials Research Bulletin
(1994), 29(12), 1271-1280
Unit Cell 5.5136(4) 7.7921(6) 5.4932(4) 90. 90. 90.
Vol 236
Z 4
Space Group P n m a
SG Number 62
Cryst Sys orthorhombic
Pearson oP20
Wyckoff d c2 b
R Value 0.132
Red Cell P 5.493 5.513 7.792 90 90 90 236.002
Trans Red 0.000 0.000 1.000 / 1.000 0.000 0.000 / 0.000 1.000 0.000
Comments R(Bragg)=0.025
Compound with mineral name: Perovskite
Rietveld profile refinement applied
X-ray diffraction (powder)
Atom # OX SITE x y z SOF H ITF(B)
Sr 1 +2 4 c 0.0337(7) 0.25 -.006(2) 0.5 0 0.39(7)
Ca 1 +2 4 c 0.0337(7) 0.25 -.006(2) 0.5 0 0.39(7)
Ru 1 +4 4 b 0 0 0.5 1. 0 0.23(4)
O 1 -2 8 d 0.294(5) 0.031(4) 0.711(5) 1. 0 0.4(3)
O 2 -2 4 c 0.488(4) 0.25 0.084(9) 1. 0 0.4(3)
*end for ICSD #75564
greetings,
Kees Goubitz
Ozhan Unverdi wrote:
Hi,
I am working about Ca dopped SrRuO3 compounds. I have made Sr(0.75)Ca(0.25)RuO3 and Sr(0.5)Ca(0.5)RuO3 compounds. I have found the crystallographic data of Sr(0.9)Ca(0.1) but not Sr(0.75)Ca(0.25)RuO3 and Sr(0.5)Ca(0.5)RuO3 . I am looking for the crystallographic structures (space groups, lattice parameters and atomic positions) of these compounds. Could someone recommend me some papers about these compounds?
Thanks in advance
Ozhan Unverdi
PhD Student
Loughborough University
Dept. of Physics
Loughborough, Leics.
LE11 3TU, UK
--
Drs. Kees Goubitz Laboratory for Crystallography van 't Hoff Institute for Molecular Sciences (HIMS) Faculty of Sciences (FNWI) Universiteit van Amsterdam Nieuwe Achtergracht 166 1018WV Amsterdam The Netherlands
tel. +31 (0) 20 525 7038/7030 Fax +31 (0) 20 525 6940 E-mail : [EMAIL PROTECTED]
