Il Nuovo Cimento D

, 12:851 | Cite as

On the possibility of a forecast for off-centre configuration of Ag+ and Cu+ in alkali halide crystals

  • L. Bosi
  • M. Nimis
Note Brevi


The simple cut criterion based on the accurate determination of the radii of the ions in alkali halides and previously introduced by the authors for forecasting off-centre configuration of Li+ and F has been extended to heavy ions (Ag+ and Cu+). It has been found that this criterion is valid for the Ag+ ion, whereas for Cu+ gives a less precise forecast because of the lack in knowledge of the effective partial charge on Cu+ ion. It has been evidenced that the critical value of the ratior + * /r + between impurity and host ion radius which allows off-centre configuration is dependent on the impurity ion mass.

PACS 61.70

Defects in crystals 


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Copyright information

© Società Italiana di Fisica 1990

Authors and Affiliations

  • L. Bosi
    • 1
  • M. Nimis
    • 1
  1. 1.Istituto di Fisica del PolitecnicoMilano

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