Applied Magnetic Resonance

, Volume 44, Issue 10, pp 1139–1165 | Cite as

Shallow Donors and Deep-Level Color Centers in Bulk AlN Crystals: EPR, ENDOR, ODMR and Optical Studies

  • Victor A. Soltamov
  • Ivan V. Ilyin
  • Alexandra A. Soltamova
  • Daniel O. Tolmachev
  • Nikolai G. Romanov
  • Alexandr S. Gurin
  • Vladimir A. Khramtsov
  • Eugene N. Mokhov
  • Yurii N. Makarov
  • Georgy V. Mamin
  • Sergei B. Orlinskii
  • Pavel G. Baranov
Article
  • 331 Downloads

Abstract

The results of studies of shallow donors and deep-level color centers in bulk AlN crystals are presented. Two shallow donors (presumably oxygen located on the nitrogen site and carbon located on the aluminum site) are suggested to exhibit the DX-relaxation. Third shallow donor (presumably silicon on the Al site) shows the shallow donor behavior up to the room temperature and can be observed without light excitation at temperatures above 200 K. The values of the Bohr radius of the shallow donors are estimated. The structure of deep-level color centers (neutral nitrogen vacancy V N) in bulk AlN crystals is determined and analyzed by electron paramagnetic resonance, electron-nuclear double resonance, optical absorption and thermoluminescence induced by X-ray irradiation. Spin-dependent recombination processes in AlN crystals are studied by means of optically detected magnetic resonance.

Notes

Acknowledgments

This work has been supported by Ministry of Education and Science, Russia, under the contract nos. 8017 and 8568; by the programs of the Russian Academy of Sciences: “Spin Phenomena in Solid State Nanostructures and Spintronics” and “Fundamentals of nanostructure and nanomaterial technologies”, and by the Russian Foundation for Basic Research under grant nos. 12-02-01011, 13-02-00821 and 13-02-00802.

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Copyright information

© Springer-Verlag Wien 2013

Authors and Affiliations

  • Victor A. Soltamov
    • 1
  • Ivan V. Ilyin
    • 1
  • Alexandra A. Soltamova
    • 1
  • Daniel O. Tolmachev
    • 1
  • Nikolai G. Romanov
    • 1
  • Alexandr S. Gurin
    • 1
  • Vladimir A. Khramtsov
    • 1
  • Eugene N. Mokhov
    • 1
  • Yurii N. Makarov
    • 2
  • Georgy V. Mamin
    • 3
  • Sergei B. Orlinskii
    • 3
  • Pavel G. Baranov
    • 1
    • 4
  1. 1.Ioffe Physical-Technical InstituteSt. PetersburgRussia
  2. 2.N-Crystals GroupSt. PetersburgRussia
  3. 3.Federal Center of Shared Facilities of Kazan State UniversityKazanRussia
  4. 4.St. Petersburg State Polytechnical UniversitySt. PetersburgRussia

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