Chin. Phys. Lett.  2011, Vol. 28 Issue (8): 087803    DOI: 10.1088/0256-307X/28/8/087803
CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
Temperature-Induced Phase Transition of In2O3 from a Rhombohedral Structure to a Body-Centered Cubic Structure
YANG Lin-Hong, DONG Hong-Xing, SUN Zheng, SUN Liao-Xin, SHEN Xue-Chu, CHEN Zhang-Hai**
State Key Laboratory of Surface Physics and Department of Physics, Laboratory for Advanced Materials, Fudan University, Shanghai 200433
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YANG Lin-Hong, DONG Hong-Xing, SUN Zheng et al  2011 Chin. Phys. Lett. 28 087803
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Abstract We report an experimental study on the temperature-induced phase transition of three-dimensional nanosheet-based flower-like microspheres (NBFMs) of In2O3. Using InOOH as precursor, rhombohedral−In2O3 NBFMs are fabricated. Temperature−induced phase transition of In2O3 NBFMs from a rhombohedral (rh) structure to a body−centered cubic (bcc) structure is examined by Raman spectroscopy and x-ray diffraction. The critical phase transition temperature is found to be about 500 °C. Photoluminescence (PL) spectra of In2O3 are measured before annealing and after annealing at different temperatures. The PL spectral results provide further evidence for the phase transition, confirming the fabrication of bcc−In2O3 NBFMs via a simple annealing method.
Keywords: 78.55.-m      63.22.Kn      64.70.-p      81.07.-b     
Received: 02 April 2011      Published: 28 July 2011
PACS:  78.55.-m (Photoluminescence, properties and materials)  
  63.22.Kn (Clusters and nanocrystals)  
  64.70.-p (Specific phase transitions)  
  81.07.-b (Nanoscale materials and structures: fabrication and characterization)  
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https://cpl.iphy.ac.cn/10.1088/0256-307X/28/8/087803       OR      https://cpl.iphy.ac.cn/Y2011/V28/I8/087803
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YANG Lin-Hong
DONG Hong-Xing
SUN Zheng
SUN Liao-Xin
SHEN Xue-Chu
CHEN Zhang-Hai
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