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Journal of Materials Science

, Volume 25, Issue 2, pp 1299–1304 | Cite as

Electron spin resonance spectra of Gd3+ ions in K2SO4-ZnSO4 glasses

  • B. Sreedhar
  • J. Lakshmana Rao
  • S. V. J. Lakshman
Papers

Abstract

Electron spin resonance (ESR) spectra of Gd3+ ions doped in K2SO4-ZnSO4 glasses have been studied on an X-band ESR spectrometer at different temperatures (−120 to 150‡ C). The ESR spectrum at room temperature exhibits three prominent features with effectiveg-values of ∼5.6, 2.83 and 2.02. The spectra are similar to the “U” spectra familiar in many oxide and fluoride glasses, indicating very low and disordered site symmetries with a broad distribution of crystal fields. Remarkable changes have been observed in the spectrum with changes in the temperature, concentration and glass composition. The broadening of theg ∼2.02 line with increasing Gd3+ ion content indicates that the dipole-dipole interaction between the resonant centres increases with increase in Gd3+ ion content. A weak band at 36350cm−1 is observed in the optical absorption spectrum of 0.5mol% Gd3+ in K2SO4-ZnSO4 glass which has been assigned to the transition8S7/26P7/2.

Keywords

Electron Spin Resonance Electron Spin Resonance Spectrum Crystal Field Electron Spin Resonance Signal Resonance Line 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    J. Wong andC. A. Angell, “Glass Structure by Spectroscopy” (Marcel Dekker, New York, 1976) p. 149.Google Scholar
  2. 2.
    P. S. L. Narashimham andK. J. Rao,J. Non. Crystl. Solids 27 (1978) 225.CrossRefGoogle Scholar
  3. 3.
    H. G. K. Sundar andK. J. Rao,ibid. 50 (1982) 137.CrossRefGoogle Scholar
  4. 4.
    V. P. Seth, V. K. Jain andR. K. Malhotra,ibid. 57 (1983) 199.CrossRefGoogle Scholar
  5. 5.
    A. Yadav andV. P. Seth,Phys. Chem. Glasses 27 (1986) 182.Google Scholar
  6. 6.
    J. Lakshmana Rao, B. Sreedhar andS. V. J. Lakshman,J. Non-Cryst. Solids 105 (1988) 95.CrossRefGoogle Scholar
  7. 7.
    N. S. Garif'yanov, R. Kh. Timerov andN. F. Usacheva,Sov. Phys. Solid State 4 (1962) 2448.Google Scholar
  8. 8.
    G. G. Mshvelidze andKh. I. Gapridashvili,ibid. 13 (1972) 2860.Google Scholar
  9. 9.
    S. Simon andA. Nicuia,Phys. Status Solidi A 81 (1984) K1.CrossRefGoogle Scholar
  10. 10.
    G. O. Karapetyan, D. M. Yudin andD. G. Gallimov,Bull. Acad. Sci USSR, Phys. Ser. 31 (1967) 814.Google Scholar
  11. 11.
    A. Nuicuia andE. Trif, Proc. Congr. Ampere, 17th, 1973, (1974) p. 543.Google Scholar
  12. 12.
    R. C. Nicklin, PhD thesis, Iowa State University; published as Technical Report US AEC (1967) IS-T-203.Google Scholar
  13. 13.
    R. P. Hunt andK. N. R. Taylor,J. Mater. Sci. 8 (1973) 203.CrossRefGoogle Scholar
  14. 14.
    Y. Yoneda, H. Kawazoe, T. Kanazawa andH. Toratani,J. Non-Cryst. Solids 56 (1983) 33.CrossRefGoogle Scholar
  15. 15.
    D. Furniss, E. A. Harris andD. B. Hollis,J. Phys. C 20 (1987) L147.CrossRefGoogle Scholar
  16. 16.
    S. Simon, A. Giurgiu, T. Oetrigov andA. Nicula,Proc. Int. Conf. Magn. Rare-Earth Actinides 1 (1983) 217.Google Scholar
  17. 17.
    D. M. Moon, J. A. Aitken, R. M. Mac Crone andG. S. Cieloszyk,Phys. Chem. Glasses 16 (1975) 91.Google Scholar
  18. 18.
    L. E. Iton andJ. Turkevich,J. Phys. Chem. 81 (1977) 435.CrossRefGoogle Scholar
  19. 19.
    R. C. Nicklin, J. K. Johnstone, R. G. Barnes andD. R. Wilder,J. Chem. Phys. 59 (1973) 1652.CrossRefGoogle Scholar
  20. 20.
    N. S. Gariyanov andM. M. Zaripov,Sov. Phys. Solid State 6 (1964) 1209.Google Scholar
  21. 21.
    I. V. Chepeleva, V. N. Lazukin andS. A. Demdovskii,Soviet Phys. Dokl. 11 (1967) 864.Google Scholar
  22. 22.
    L. Cugunov andJ. Kliava,J. Phys. C 15 (1982) L933.CrossRefGoogle Scholar
  23. 23.
    L. E. Iton, S. L. Suib andG. D. Stucky,Bull. Magn. Reson. 2 (1981) 174.Google Scholar
  24. 24.
    L. E. Iton, C. M. Brodbeck, S. L. Suib andG. D. Stucky,J. Chem. Phys. 79 (1983) 1185.CrossRefGoogle Scholar
  25. 25.
    I. V. Chepeleva andV. N. Lazukin,Dokl. Akad. Nauk. SSR 226 (1976) 311.Google Scholar
  26. 26.
    H. J. A. Koopmans, M. M. Perik, B. Nieweuthuijse andP. J. Gellings,Phys. Status Solidi (b) 120 (1983) 745.CrossRefGoogle Scholar
  27. 27.
    C. M. Brodbeck andL. E. Iton,J. Chem. Phys. 83 (1985) 4285.CrossRefGoogle Scholar
  28. 28.
    D. L. Griscom,J. Non-Cryst. Solids 40 (1980) 211.CrossRefGoogle Scholar
  29. 29.
    P. W. France, S. F. Carter andJ. M. Parker,Phys. Chem. Glasses 27 (1986) 32.Google Scholar
  30. 30.
    E. A. Harris,ibid. 28 (1987) 196.Google Scholar
  31. 31.
    T. Oosterhoff andH. W. Den Hartog,Phys. Status Solidi (b) 62 (1974) 469.CrossRefGoogle Scholar
  32. 32.
    J. M. Baker andF. I. B. Williams,Proc. Roy. Soc. A 267 (1962) 283.CrossRefGoogle Scholar
  33. 33.
    B. R. Judd andI. Lindgren,Phys. Rev. 122 (1961) 1802.CrossRefGoogle Scholar

Copyright information

© Chapman and Hall Ltd 1990

Authors and Affiliations

  • B. Sreedhar
    • 1
  • J. Lakshmana Rao
    • 1
  • S. V. J. Lakshman
    • 1
  1. 1.Department of PhysicsSri Venkateswara UniversityTirupatiIndia

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