Journal of Inorganic Materials

• Research Paper • Previous Articles     Next Articles

Study on the Crystal Structure and Microstructure of SrB4O7 doped with Li by X-ray Powder Diffraction

LIU Hongchao; GUO Changlin; FAN Shiji; XU Yibin   

  1. Shanghai Institute of Ceramics; Chinese Academy of Scicnces Shanghai 200050 China
  • Received:1995-12-20 Revised:1996-01-15 Published:1997-02-20 Online:1997-02-20

Abstract: The doped Li ion has aneffect on both the crystal structure and property of SrB4O7. The crystal structure and microstructure of doped SrB4O7 was studied in detail from X-ray powder diffraction data. Its space group is Pmn21, cell parameters: a=1O.741(5)A, b=4.245(1)A, c=4.437(1)A, a little bigger than those of SrB4O7. Reasons for thesc changes were presented. In the cel1, Li ions occupy part of the vacancy between B-O layers; such a structure can improve the nonlinear optical coefficicnts. The errors of crystal data from references were also analyzed.

Key words: SrB4O7, crystal structure, microstructure, X-ray powder diffraction, rietveld method