Physics – Condensed Matter – Materials Science
Scientific paper
2006-03-10
J. Chem. Sci., Vol.118, 1, February 2006, pp. 88-92
Physics
Condensed Matter
Materials Science
14 pages, 4 figures
Scientific paper
Besides a drastic reduction in saturation magnetization of disordered Sr2FeMoO6 compared to highly ordered samples, magnetizations as a function of the temperature for different disordered samples may also show qualitatively different behaviors. We investigate the origin of such diversity by performing spatially resolved photoemission spectroscopy on various disordered samples. Our results establish that extensive electronic inhomogeneity, arising most probably from an underlying chemical inhomogeneity in disordered samples is responsible for the observed magnetic inhomogeneity. It is further pointed out that these inhomogeneities are connected with composition fluctuations of the type Sr2Fe1+xMo1-xO6 with Fe-rich (x>0) and Mo-rich (x<0) regions.
Bertolo M.
Cautero G.
Krishnakumar S. R.
Manju Unnikrishnan
Raj Samiran
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