Physics of the Solid State

, Volume 45, Issue 2, pp 253–258 | Cite as

Optical absorption in cobalt-containing single-crystal epitaxial films of gadolinium gallium garnets

  • V. V. Randoshkin
  • N. V. Vasil’eva
  • V. G. Plotnichenko
  • Yu. N. Pyrkov
  • A. M. Saletskii
  • N. N. Sysoev
  • A. M. Galkin
  • V. N. Dudorov
Semiconductors and Dielectrics

Abstract

Cobalt-containing single-crystal garnet films are grown by liquid-phase epitaxy from supercooled PbO-B2O3-and Bi2O3-B2O3-based solution melts on Gd3Ga5O12 substrates. It is shown that cobalt in the films is in a trivalent state. Upon introduction of GeO2 into the initial solution melt, cobalt transforms into a bivalent state. It is revealed that the absorption spectrum of the grown films exhibits two broad bands in the wavelength ranges 450–800 and 900–1800 nm. Each of these bands contains three components. The spin-orbit splitting of the observed bands is determined.

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Copyright information

© MAIK "Nauka/Interperiodica" 2003

Authors and Affiliations

  • V. V. Randoshkin
    • 1
  • N. V. Vasil’eva
    • 2
  • V. G. Plotnichenko
    • 3
  • Yu. N. Pyrkov
    • 3
  • A. M. Saletskii
    • 4
  • N. N. Sysoev
    • 4
  • A. M. Galkin
    • 4
  • V. N. Dudorov
    • 1
  1. 1.Joint Laboratory of Magnetooptoelectronics, Institute of General PhysicsRussian Academy of Sciences, Mordovian State UniversitySaranskRussia
  2. 2.Institute of General PhysicsRussian Academy of SciencesMoscowRussia
  3. 3.Research Center of Fiber Optics, Institute of General PhysicsRussian Academy of SciencesMoscowRussia
  4. 4.Moscow State UniversityVorob’evy gory, MoscowRussia

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