The effect of Gd(3+) doping is harnessed to promote the phase transformation of ultrathin (2 nm) InOOH nanowires to corundum In(2)O(3) and to stabilize the nanowires against morphological deformation. The approach described here suggests a new route toward morphology and phase control of In(2)O(3) nanocrystals, which could be applied to prepare other nanocrystals.
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