Journal
JOURNAL OF CRYSTAL GROWTH
Volume 280, Issue 1-2, Pages 292-299Publisher
ELSEVIER
DOI: 10.1016/j.jcrysgro.2005.02.063
Keywords
crystal morphology; transport property; growth from solutions; nanomaterials; magnetic property
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Potassium manganese oxide (K0.27MnO2 center dot 0.5H(2)O) nanowires/ribbons have been synthesized successfully by a simple hydrothermal method at low temperature. The nanoribbons have rectangular sections with widths of 50-200 nm, thicknesses of 20-25nm, and lengths up to hundreds of micrometers; nanowires have diameters of 20-30nm and lengths up to hundreds of micrometers. A plausible formation mechanism of the one-dimensional nanostructure and the effect of the anion effect used for the starting reactants on the product are discussed. Temperature dependence resistivity of one nanowire follows the small polaron theory p = AT exp(E-a/k(B)T), and a small magnetoresistance was observed in the paramagnetic potassium-intercalated manganese oxides. (c) 2005 Elsevier B.V. All rights reserved.
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