Abstract
The refractive indices of non-chopped and chopped films of cryolite, MgF2 and mixed cryolite-MgF2, which is higher than the bulk value, measured using spectro-photometer, ellipsometer and Abeles method are observed to be higher than corres-ponding bulk values. Chopped films show a higher refractive index than non-chopped films. The electron diffraction study shows a more amorphous structure for the chopped films. The major part played by chop-time seems to be in increasing the initial minute’s-scale aging rather than settling of ad-atoms during chop-time. The observed dispersion curve shows that some unknown material other than water gives an important aging effect.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
CRC 1978–79Handbook of Chemistry and physics, 59th ed., (Florida, USA: CRC Press)
Guenther H K and Jung E 1976Thin Solid Films 4 219
Hall J F and Fergusson W F C 1955J. Opt. Soc. Am. 45 75
Harris M, Macleod H A, Ogura S, Pelletier E and Vidal B 197957 Thin Solid Films 173
Heavens O S and Smith S D 1957J. Opt. Soc. Am. 47 471
Heavens O S 1960Rep. Prog. Phys. 23 1
Housten R A 1947A treatise on light (London: Longmans Green) 7th ed., p. 465
Kinosita K and Nishibori M 1969J. Vac. Sci. Technol. 6 730
Koch H 1965Phys. Status Solidi 12 533
Koppelmann G, Krebs K and Leyendecker H 1961Z. Phys. 163 557
Macleod H A and Richmond D 1976Thin Solid Films 37 1964
Ogura S, Sugawara N and Hiraga R 1975Thin Solid Films 30 3
Oliver W R 1970Philos. Mag. 21 1229
Pelletier E, Roche P and Vidal B 1976Nuovo. Rep. Opt. 7 353
Pulkar H K and Jung E 1969Thin Solid Films 4 219
Pulkar H K and Zaminer C 1970Thin Solid Films 5 421
Ritter E and Hoffmann R 1969J. Vac. Sci. Technol. 6 733
Shklyarevskii I N, Shazli A F A El and Govoruskehenko A I 1972Opt. Spectrosc. 32 40
Vijaya K 1982 Ellipsometric study of the changes in optical properties (aging) of non-chopped and chopped films of cryolite, MgF2, ZnS and their co-deposited mixtures in various ambients Ph.D. thesis, Pune University, Pune
Vijaya K, Puri R K and Karekar R N 1980Thin Solid Films 70 105
Yadava V N, Sharma S K and Chopra K L 1973Thin Solid Films 17 243
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Puri, R.K., Vijaya, K. & Karekar, R.N. Effect of minute’s-scale aging on refractive index of chopped and non-chopped optical films. Pramana - J Phys 21, 311–322 (1983). https://doi.org/10.1007/BF02875536
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF02875536