Theoretica chimica acta

, Volume 3, Issue 3, pp 271–277 | Cite as

Energy levels and crystal-field calculations of trivalent ytterbium in yttrium aluminum garnet and yttrium gallium garnet

  • J. A. Koningstein
Commentationes

Abstract

The splitting of the two 2F states of Yb3+:YAlG and Yb3+:YGaG, have been determined from fluorescence and absorption spectra at low temperatures. The levels of the ground states of Yb3+: YAlG are at: 0, 388, 613, 778 cm−1, those of Yb3+: YGaG at 0, 308, 567, and 672 cm1. Crystal field calculations yield the following values for Yb3+:YAlG; A 2 0 =270 cm−1, A 4 0 =−165 cm−1, A 4 4 =−1155 cm−1, A 0 6 =21 cm−1, A 4 6 =−304 cm−1 and for Yb3+:YGaG: A 0 2 =110 cm−1, A 0 4 =−125 cm−1, A 4 4 =−1250 cm−1, A 0 6 =10 cm−1 and A 4 6 =−142 −1 A satisfactory agreement has been found for calculated and observed splitting patterns.

Zusammenfassung

Die Aufspaltung der 2F-Zustände von Yb3+:YAlG(I) und Yb3+:YGaG (II) wurde bei tiefen Temperaturen aus Fluoreszenz- und Absorptionsspektren bestimmt. Die Niveaus des Grundzustandes von (I) liegen bei 0, 388, 613, 778 −1, die von (II) bei 0, 308, 567 und 672 −1. Die Ligandenfeldtheorie ergibt folgende Werte für die Kristallfeldparameter: für (I) A 2 0 =270 cm−1, A 4 0 =−165 cm−1, A 4 4 =−1155 cm−1, A 0 6 =21 cm−1, A 4 6 =−304 cm−1 unf für (II) A 0 2 =110 cm−1, A 0 4 =−125 cm−1, A 4 4 =−1250 cm−1, A=10 cm−1 and A 4 6 =−142 −1. Die Übereinstimmung zwischen berechneter und beobachteter Aufspaltung war befriedigend.

Résumé

La division, par le champ de ligandes, des états 2F7/2 et 2F5/2 dans Yb3+:YAlG et Yb3+:YGaG a été déterminée des spectres de fluorescence et d'absorption. Les sous-niveaux de l'état fordamental se situent à 0, 388, 613, 778 cm−1 dans Yb3+:YAlG, à 0, 308, 567, 672 cm−1 Yb3+: YGaG. Le calcul fournit les valeurs suivantes pour les paramètres: Yb3+: YAlG A 2 0 =270 cm−1, A 4 0 =−165 cm−1, A 4 4 =−1155 cm−1, A 0 6 =21 cm−1, A 4 6 = -304 cm−1 Yb3+:YGaG: A 0 2 =110 cm−1, A 0 4 =−125 cm−1, A 4 4 =−1250 cm−1, A 0 6 =10 cm−1 et A 4 6 =−142 −1. L'accord entre les spectres calculé et observé est satisfaisant.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. [1]
    Ayant, Y., and J. Thomas: Compt. Rend. 248, 387 (1959).Google Scholar
  2. [2]
    Ball, M., G. Garton, M. J. M. Leask, and W. P. Wolfe: Proc. Intern. Conf. Low Temp. Physics 7th Toronto Ont. 1960, 128 (1961).Google Scholar
  3. [3]
    Brumage, W. H., C. C. Lin, and J. H. Van Vleck: Physic Rev. 132, 608 (1963).Google Scholar
  4. [4]
    Elliott, R. J., and K. W. H. Stevens: Proc. Roy. Soc. A 218, 553 (1953).Google Scholar
  5. [5]
    Hutchings, M. T., and W. P. Wolfe: J. chem. Physics 41, 617 (1964).Google Scholar
  6. [6]
    Judd, B. R.: Proc. Roy. Soc. A 227, 552 (1955).Google Scholar
  7. [7]
    Konigstein, J. A., and J. E. Geusic: Physic Rev. 136, A 711 (1964).Google Scholar
  8. [8]
    —: Physio Rev. 136, A 717 (1964).Google Scholar
  9. [9]
    —, and J. E. Gneusic: Physio Rev. 136, A 726 (1964).Google Scholar
  10. [10]
    - The Energy Levels of Trivalent Europium in Yttrium Gallium Garnet (to be published in J. chem. Physics).Google Scholar
  11. [11]
    -, and D. L. Wood: Energy Levels of Nd3+:YGaG (to be published).Google Scholar
  12. [12]
    Pappalardo, R., and D. L. Wood: J. chem. Physics 33, 1734 (1960).Google Scholar
  13. [13]
    Sievers, A. J., and M. Tinkham: Physic Rev. 124, 321 (1961).Google Scholar
  14. [14]
    Stevens, K. W. H.: Proc. Physic Soc. A 65, 209 (1952).Google Scholar
  15. [15]
    Wickersheim, K. A., and R. L. White: Physic Rev. Letters 4, 123 (1960).Google Scholar
  16. [16]
    —: Physic Rev. 122, 1376 (1961).Google Scholar
  17. [17]
    Wood, D. L.: J. chem. Physics 39, 1671 (1963).Google Scholar

Copyright information

© Springer-Verlag 1965

Authors and Affiliations

  • J. A. Koningstein
    • 1
  1. 1.Bell Telephone Laboratories, IncorporatedMurray Hill

Personalised recommendations