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Fit of high resolution XRD data to the modeled pattern in a Rietveld refinement of NBT-4BT modeled in the (a) R3c space group, (b) Cc space group, and (c) Cc + Pm m space groups.
(a) XRD and (b) neutron patterns of NBT-4BT with a Cc + Pm m model through a combined Rietveld refinement.
Parameters for the Cc + Pm m phases from the combined Rietveld refinement.
Bond valence sum calculations for each bond type in the Cc phase.
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