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Pramana

, Volume 23, Issue 1, pp 39–46 | Cite as

Validity regions of charge shift model

  • S N Gupta
  • G Varma
  • H C Verma
Solid State Physics

Abstract

The charge shift model has been used to calculate electric field gradients (efg) for various probe-host combinations. The comparison with the corresponding experimental values indicates that the validity of the model depends on sign and magnitude of the charge shift. The model agrees fairly well with experiments for the hosts having positive charge shift. The agreement is good for hosts having negative charge shift only if the magnitude is small (< 0·012).

Keywords

Charge shift model alloys electric field gradient 

PACS No

71·70 Jp 

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References

  1. Bodenstedt E and Perscheid B 1978Hyp. Int. 5 291CrossRefADSGoogle Scholar
  2. Ernst H, Hagn E, Zech E and Eska G 1979Phys. Rev. B19 4460ADSGoogle Scholar
  3. Feiock F D and Johnson W R 1969Phys. Rev. 187 39CrossRefADSGoogle Scholar
  4. Hermans L, Rots M, Claes J, Rao G N and Coussement R 1981Phys. Rev. B23 2674ADSGoogle Scholar
  5. Krusch K and Forker M 1980Z. Phys. B37 225ADSGoogle Scholar
  6. Maio A, Hermans L, Rots M, Rao G N and Coussement R 1982Hyp. Int. 11 239CrossRefADSGoogle Scholar
  7. Pearson W B 1958A handbook of lattice spacings and structures of metals and alloys (New York: Pergamon press)Google Scholar
  8. Raghavan P, Kaufman E N, Raghavan R S, Ansaldo E J and Naumann R A 1976Phys. Rev. B13 2835ADSGoogle Scholar
  9. Simmons G and Wang H 1971Single crystal elastic constants and calculated aggregate properties, 2nd edn. (Cambridge: MIT Press)Google Scholar
  10. Sternheimer R M 1963Phys. Rev. 130 1423CrossRefADSGoogle Scholar
  11. Verma H C and Rao G N 1981Phys. Lett A82 303ADSGoogle Scholar
  12. Verma H C, Chappert J and Rao G N 1981Hyp. Int. 11 45CrossRefADSGoogle Scholar
  13. Vianden R 1981Hyp. Int. 10 1243CrossRefADSGoogle Scholar

Copyright information

© Indian Academy of Sciences 1984

Authors and Affiliations

  • S N Gupta
    • 1
  • G Varma
    • 1
  • H C Verma
    • 1
  1. 1.Department of Physics, Patna Science CollegePatna UniversityPatnaIndia

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