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Intrinsic chemical and structural inhomogeneity in lightly doped La(1-x)Sr(x)MnO(3)

Tomohiro Shibata·Bruce Bunker·John Mitchell·Peter Schiffer
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Abstract

X-ray absorption fine structure measurements of the Sr and La K edges of the solid solution La(1-x)Sr(x)MnO(3) reveal a consistent deviation from a random distribution of Sr at the La/Sr sites for x~0.3. Local structural disorder on the cation sublattice in the low-x samples is also observed to differ in the vicinity of the La-rich and Sr-rich clusters. The local clustering and structural disorder establish an intrinsic chemical as well as structural inhomogeneity on the nanometer scale, which may provide a mechanism for the nucleation of magnetoelectronic phase separation.

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Tomohiro Shibata, Bruce Bunker, John Mitchell, Peter Schiffer. 2001-07-31. Intrinsic chemical and structural inhomogeneity in lightly doped La(1-x)Sr(x)MnO(3). https://doi.org/10.1103/physrevlett.88.207205

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