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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: xswu@nju.edu.cn
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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

Information

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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