中国物理B ›› 2000, Vol. 9 ›› Issue (6): 445-449.doi: 10.1088/1009-1963/9/6/009

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DETERMINATION OF THE Mn2+-F- BOND LENGTH USING A COMPLETE SPECTRUM CRITERION AND A NEXT NEAREST NEIGHBOR MODEL

孙威立, 李兆民   

  1. Department of Physics, Sichuan Normal University, Chengdu 610068, China
  • 收稿日期:1999-06-29 修回日期:1999-09-13 出版日期:2000-06-15 发布日期:2005-06-12
  • 基金资助:
    Project supported in part by the National Natural Science Foundation of China (Grant No. 19474037).

DETERMINATION OF THE Mn2+-F- BOND LENGTH USING A COMPLETE SPECTRUM CRITERION AND A NEXT NEAREST NEIGHBOR MODEL

Sun Wei-li (孙威立), Li Zhao-min (李兆民)   

  1. Department of Physics, Sichuan Normal University, Chengdu 610068, China
  • Received:1999-06-29 Revised:1999-09-13 Online:2000-06-15 Published:2005-06-12
  • Supported by:
    Project supported in part by the National Natural Science Foundation of China (Grant No. 19474037).

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摘要： A complete spectrum criterion and a next nearest neighbor model are proposed. Research indicates: 1) Using this criterion can remove the long existing puzzle that different parameters produce different bond lengths. The criterion greatly improve the reliability of optical method for determining the Mn2+-F- distance R. 2) The exponent n and coefficient K in the inverse power law 10Dq=KR-n are obviously affected by next nearest neighbor. 3) Considering the effect can lead to a better result, the next nearest neighbor model is thus more strict and reliable.

Abstract: A complete spectrum criterion and a next nearest neighbor model are proposed. Research indicates: 1) Using this criterion can remove the long existing puzzle that different parameters produce different bond lengths. The criterion greatly improve the reliability of optical method for determining the Mn2+-F- distance R. 2) The exponent n and coefficient K in the inverse power law 10Dq=KR-n are obviously affected by next nearest neighbor. 3) Considering the effect can lead to a better result, the next nearest neighbor model is thus more strict and reliable.

中图分类号:  (Crystal binding; cohesive energy)

  • 61.50.Lt
61.66.Fn (Inorganic compounds) 71.70.Ch (Crystal and ligand fields) 78.20.-e (Optical properties of bulk materials and thin films)