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Far-infrared absorption spectra and properties of SnO2 nanorods

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3 Author(s)
Liu, Yingkai ; National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, People’s Republic of ChinaStructural Research Laboratory, University of Science and Technology of China, Hefei, Anhui 230026, People’s Republic of ChinaDepartment of Physics, Yunnan Normal University, Kunming 650092, People’s Republic of China ; Dong, Yi ; Wang, Guanghou

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Gray-colored materials synthesized by calcining the precursor powders, which were produced in a microemulsion, are identified to be rutile structured SnO2 nanorods 20–45 nm in diameter and several micrometers in length by x-ray diffraction, transmission with electron microscopy, and high-resolution transmission microscopy. Conspicuous far-infrared (FIR) absorption spectrum platform peaks with widths of up to 61.6 and 119 cm-1 are observed, and are explained as the overlap of the surface modes of cylindrical and spheroid particles. Good agreement is achieved between FIR platform peaks and calculated results. © 2003 American Institute of Physics.

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Applied Physics Letters  (Volume:82 ,  Issue: 2 )