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Coefficient de Condensation de Couches Minces de Fluorures

Козффициент конденсации тонких слоев флоридов

  • Published:
Il Nuovo Cimento B (1965-1970)

Summary

The condensation coefficient of lithium and lanthanum fluorids has been measured determining the thichnesses of the thin films grown simultaneously on supports kept during film formation at temperatures from 25 °C to 500 °C. It is found that the condensation coefficient is equal to 1 for LaF3 at 55 °C and for LiF at 60 °C, being less than 1 at higher temperatures.

Riassunto

Si è misurato il coefficiente di condensazione dei fluoruri di litio e di lantanio determinando gli spessori delle lamine sottili formate su sostegni mantenuti, durante la proiezione, a delle temperature comprese tra 25 e 500 °C. Si è trovato che esso risulta uguale a 1 per una temperatura del sostegno minore o uguale a 55 °C per il LaF3 e a 60 °C per il LiF e inferiore a 1 per temperature superiori, decrescendo con legge esponenziale in funzione della temperatura assoluta del supporto.

Реэюме

Иэмеряется козффициент конденсации флоридов лития и лантана, определяя толшины тонких слоев обраэованных в поддерживаюших подложках, во время проекции, при температурах в интервале от 25° до 500 °C. Получается, что он равняется 1 при температуре подложки, меньщей или равной 55 °C для LaF3 и 60 °C для LiF, и меньще 1 при более высоких температурах.

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References

  1. L. Dunoyer:Compt. Rend. Acad. Sci.,152, 593 (1911).

    Google Scholar 

  2. R. W. Wood:Phil. Mag.,32, 364 (1916).

    Article  Google Scholar 

  3. I. Langmuir:Journ. Amer. Chem. Soc.,402, 1361 (1918).

    Article  Google Scholar 

  4. M. Devienne:Mem. Sci. Phys.,53, 1 (1952).

    Google Scholar 

  5. E. Rutner, P. Goldfinger etJ. P. Hirth:Condensation and Evaporation of Solids (London, 1963).

  6. J. P. Hirth etG. M. Pound:Progr. Mater, Sci.,11, 1 (1963).

    Article  Google Scholar 

  7. J. N. Chirigos, M. T. Symnad etG. M. Pound:Thèse, Carnegie Institute of Technology (1964).

  8. Y. G. Putshinskii:Žur. Tekh. Fiz.,28, 1402 (1958).

    Google Scholar 

  9. H. Mayer etH. Goehre:Proc. Northwest German Phys. Soc. Meeting (1962), Bad Pyrmont.

  10. L. S. Palatnik etA. I. Fedorenko:Sov. Phys. Solid State,7, 2561 (1966).

    Google Scholar 

  11. M. Bourg:Ann. of. Phys.,13, 623 (1962).

    Google Scholar 

  12. H. Mayer etH. Goehre:Vacuum Microbalance Technique,3, 100 (1963), Plenum Press.

    Google Scholar 

  13. B. K. Chakraverty:Adsorption et croissance cristalline, ed. C.N.R.S. (Nancy, 1965), p. 373.

  14. K. H. Behrndt: communication privée.

  15. A. Bourg:Journ. Microscopie,4, 313 (1965).

    Google Scholar 

  16. A. Bourg, M. Bourg etF. Porreca:Journ. Microscopie,5, 421 (1966).

    Google Scholar 

  17. J. Hudson:Journ. Chem. Phys.,36, 887 (1962).

    Article  ADS  Google Scholar 

  18. Note ajoutée en épreuves. — Après échange d’opinions avec le ProfesseurPound, il semble que la relation théorique proposée dans la réf. (6) p. 6 soit applicable dans notre cas. Par ailleurs, on admet aujourd’hui que, lors de la formation des couches minces, l’équilibre thermodynamique est près d’être établi at que, en conséquence, la température du support lors de la projection est pratiquement celle de la couche; les hypothèses de la réf. (17) doivent donc être abandonnées.

    Google Scholar 

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Bourg, A., Bourg, M. & Porreca, F. Coefficient de Condensation de Couches Minces de Fluorures. Nuovo Cimento B (1965-1970) 52, 98–105 (1967). https://doi.org/10.1007/BF02710654

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  • DOI: https://doi.org/10.1007/BF02710654

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