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Observation of Hyperfine Splitting of the Levels of V3+ Ions and Pairs by Phonon Spectroscopy

  • L. J. Challis
  • A. A. Ghazi
  • D. J. Jefferies
  • M. N. Wybourne

Abstract

In principle, frequency crossing spectroscopy1 has a resolution limited only by the linewidths of the levels involved. In the present work measurements have been made on V3+ in Al2O3 with a resolution ⪝ 100 MHz at a crossing frequency of 166 GHz. Measurements of thermal resistivity W have been made for fields along the c-axis near the crossing point at B ∿ 3.1T between the ΔM = 1 and ΔM = 2 transition frequencies of V3+: υ1 = D - gβB - AHIZ and υ2 = 2gβB + 2AHIZ where D = 249 GHz, g = 1.912, AH = 288 ± 2 MHz3 and I = 7/2. Both frequencies have 8 hyperfine components which are split by AH and 2AH respectively. If these components are well resolved signal ΔW/Wo obtained by crossing them has 21 lines separated by AH.

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References

  1. 1.
    Wybourne M N, Jefferies D J and Challis L J, submitted for publication. This paper includes references to earlier measurements of frequency crossing spectroscopy.Google Scholar
  2. 2.
    Pontnau J and Adde R, J Phys Chem Solids 36, 1023 (1975).ADSCrossRefGoogle Scholar
  3. 3.
    Zverev G M and Prokhorov A M, Sov Phys JETP 11, 330 (1960).Google Scholar
  4. 4.
    We are very grateful to Dr de Goer, Professor J Joffrin and Professor H Kinder for providing the samples.Google Scholar
  5. 5.
    These are the data of the present authors shown in Challis L J, Journal de Physique 39 - C6, 1553 (1978).Google Scholar
  6. 6.
    Challis L J, Ghazi A A, Jefferies D J, Williams D L and Wybourne M N, Phys Rev Letts 40, 519 (1978).ADSCrossRefGoogle Scholar

Copyright information

© Plenum Press, New York 1980

Authors and Affiliations

  • L. J. Challis
    • 1
  • A. A. Ghazi
    • 1
  • D. J. Jefferies
    • 1
  • M. N. Wybourne
    • 1
  1. 1.Department of PhysicsUniversity of NottinghamNottinghamUK

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