Acta Phys. -Chim. Sin. ›› 1998, Vol. 14 ›› Issue (10): 957-960.doi: 10.3866/PKU.WHXB19981019

• Note • Previous Articles    

Crystal Structure and Infrared Spectra of Nanocrystalling Rare Earth Mixed Oxides Dy1-xSrxCoO3-y

Wei Kun, Shi Yan, He Lun-Yan   

  1. Rare Earth Technical Centre of Nanchang University,Nanchang 330047
  • Received:1997-12-04 Revised:1998-05-04 Published:1998-10-15
  • Contact: Wei Kun

Abstract:

The crystal structure and infrared absorption spectra of nanocrystallines Dy1-xSrxCoO3-y (0.0≤x≤1.0) were studied. The results show that the latttice parameters were bigger than microcrystallines. The mixed oxides crystallized in orthorhombic (0.0≤x≤0.5) or tetragonal system (0.6≤x≤0.9) or hexagonal system (x=1.0 ). With symmetry centre of crystal structure variation, the spectra bands of nanocrystallines were fissioned. The infrarea absorption spectra of nanocrystallines appeared as quantum size effect.

Key words: Nannocrystallines, Crystal structure, Infrared absorbtion spectra, Quantum size effect