Abstract
From the results of Fourier Transform Infrared (FTIR) spectra and X-ray Diffraction (XRD), we found that there exists size effect on the structure and infrared behavior in nanocrystalline MgO. When the grain size decreases, the crystal lattice dilates anisotropically, and the red shift of stretching vibrational mode coexists with the blue shift of the bending vibrational mode. We give a preliminary interpretation to the above abnormal phenomena.
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