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Crystal structure of Cu doped La0.67Ca0.33MnO3 by Rietveld refinement

Published online by Cambridge University Press:  05 March 2012

H. L. Cai ,
X. S. Wu ,
F. Z. Wang ,
A. Hu ,
S. S. Jiang ,
J. F. Feng ,
B. Qian ,
J. H. Xing ,
C. J. Chen  and
X. Chen
...Show all authors
H. L. Cai
Affiliation:
Lab of Solid State Microstructures, Department of Physics, Nanjing University, Nanjing 210093, China
X. S. Wu*
Affiliation:
Lab of Solid State Microstructures, Department of Physics, Nanjing University, Nanjing 210093, China
F. Z. Wang
Affiliation:
Lab of Solid State Microstructures, Department of Physics, Nanjing University, Nanjing 210093, China
A. Hu
Affiliation:
Lab of Solid State Microstructures, Department of Physics, Nanjing University, Nanjing 210093, China
S. S. Jiang
Affiliation:
Lab of Solid State Microstructures, Department of Physics, Nanjing University, Nanjing 210093, China
J. F. Feng
Affiliation:
Department of Physics, Changshu College, Changshu 215500, China
B. Qian
Affiliation:
Department of Physics, Changshu College, Changshu 215500, China
J. H. Xing
Affiliation:
Department of Physics, Changshu College, Changshu 215500, China
C. J. Chen
Affiliation:
BSRL, Institute of High Energy Physics, Beijingy 100039, China
X. Chen
Affiliation:
BSRL, Institute of High Energy Physics, Beijingy 100039, China
M. H. Sun
Affiliation:
BSRL, Institute of High Energy Physics, Beijingy 100039, China
Z. H. Wu
Affiliation:
BSRL, Institute of High Energy Physics, Beijingy 100039, China
*
a)Author to whom correspondence should be addressed; electronic mail: [email protected]
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Abstract

The crystal structure of La0.67Ca0.33Mn0.80Cu0.20O3 (LCMCO) compound was determined from laboratory X-ray powder diffraction data and refined by the Rietveld method. LCMCO is isostructural with La0.67Ca0.33MnO3 (LCMO). The crystal data are: La0.64Ca0.36Mn0.82Cu0.18O3.01, Mr=843.80, orthorhombic system, space group Pnma, a=5.4364(1) Å, b=7.6725(2) Å, c=5.4452(1) Å, V=227.124(8)Å3, Z=4, Dx=6.168 g∕cm3. In comparing with the Cu-free compound, subtle structural changes such as bond lengths and bond angles found in the Cu-doped compound may be responsible for the larger effects on the transport and magnetic properties when Cu partially substitutes for Mn in CMCO.

Keywords

X-ray diffractioncopper dopingLa0.67Ca0.33MnO3
Type
Selected Papers from 2003 Chinese National Symposium on XRD
Information
Powder Diffraction , Volume 19 , Issue 4 , December 2004 , pp. 329 - 332
Copyright
Copyright © Cambridge University Press 2004

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