Local distortion in Co-doped LSMO from entropy-maximized charge density distribution

Perovskite structure manganites La0.67Sr0.22Mn1-11-xCoxO3 were prepared by the solid state reaction method. An X-ray analysis of the structure was undertaken using the Rietveld technique on the experimental powder X-ray diffraction data and, then, a charge density distribution study was undertaken, using the maximum entropy method (MEM) The charge density in the unit cell was reconstructed and the effect of Co3+ doping in the Mn-O matrix was studied. Local distortions due to Co doping were analyzed and the results are now discussed (C) 2010 Elsevier BV All rights reserved.