The analysis on the rearrangement of charge density distribution in response to magnetic behavior in Mn doped SnO2 nanoparticles

An investigation on the rearrangement of charge density distribution in response to the magnetic behavior is done on the nanosized Sn1−xMnxO2 systems prepared via sol-gel technique. The samples were analyzed using X-ray diffraction, SEM and VSM measurements. The charge ordering is found as a signature to its magnetic response from the reconstruction of the charge density in the unit cell derived from the MEM/Rietveld analysis of the X-ray structure factors. Quantitative investigation is done by analyzing the 3-dimensional, 2-dimensional and 1-dimensional charge density profiles drawn along the bonding directions. The observed para- to dia-magnetic transition with respect to doping concentration of Mn is explained using defect chemistry and the charge ordering. The MEM/Rietveld analysis is used for the first time to analyse the charge and magnetic ordering in the chosen system.