Fabrication and Raman Studies οf MgO/SnO2 Core Shell Heteronanowires |
| H.S. Kim and H.W. Kim
Division of Materials Science and Engineering, Inha University, Incheon 402-751, Republic of Korea |
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| We have reported the fabrication of MgO core/SnO2 shell nanowires, by a two step evaporation process. Thermal annealing induced changes in morphology, in which the nanowire surface became rough by the agglomeration of SnO2 shell layers and its crystallinity was enhanced. It was found that three fundamental modes (475, 634, 772 cm-1) and an infrared (IR)-active mode (682 cm-1) of rutile SnO2 appeared in the Raman spectrum of MgO core/SnO2 shell nanowires. By thermal annealing, the relative intensity of the A2u to the A1g line was reduced, presumably due to the disorder or size effects. |
| DOI: 10.12693/APhysPolA.116.58 PACS numbers: 81.07.-b, 78.30.-j, 61.05.cp |