Hyperfine Interactions

, Volume 43, Issue 1–4, pp 501–506 | Cite as

Nuclear alignment of implanted160Tb in highly oriented pyrolytic graphite layers

  • B. Kastelein
  • B. Borst
  • A. J. de Jong
  • H. Postma
  • H. C. Meijer
New Developments

Abstract

Low-temperature nuclear alignment of160Tb ions implanted in Highly Oriented Pyrolytic Graphite has been observed by the anisotropic intensity distribution of γ-rays. The data can be understood with an effective spin Hamiltonian containing combined magnetic and electric hyperfine interactions. Values deduced for the hyperfine parameters are A/k=(101±7) mK for the magnetic interaction, and P/k=(−3.7±0.9) mK for the nuclear electric quadrupole interaction, under the assumption that B=0 and Δ=0. Measurements in magnetic fields of 0.2 and 1.0 T directed along the graphite c-axis showed thermal saturation due to the strongly reduced heat conductivity of HOPG in the presence of a magnetic field.

Keywords

Magnetic Field Hyperfine Interaction Magnetic Interaction Quadrupole Interaction Pyrolytic Graphite 

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References

  1. /1/.
    B. Kastelein, A. den Ouden, H. Postma, H.C. Meijer, Hyp. Int.35 (1987) 895Google Scholar
  2. /2/.
    P.W. Martin, S.R. Dong, J.G. Hooley, Phys. Rev.33 (1986) 4227CrossRefADSGoogle Scholar
  3. /3/.
    C. Uher and D.T. Morelli, Synth. Met.12 (1985)Google Scholar
  4. /4/.
    D.T. Morelli, C. Uher, Phys. Rev.B31 (1985) 6721ADSGoogle Scholar
  5. /5/.
    W. Low, Solid State Phys., Suppl. 2, (1960) 329MathSciNetGoogle Scholar
  6. /6/.
    N. Sano and J. Itoh, J. Phys. Soc. Jpn32 (1972) 95CrossRefGoogle Scholar
  7. /7/.
    A. Abragam, B. Bleaney, Electronic Paramagnetic Resonance of Transition Ions, Clarendon Press, Oxford (1970)Google Scholar
  8. /8/.
    K.S. Krane, Low Temperature Nuclear Orientation, ed. N.J. Stone, H. Postma, North Holland, Amsterdam (1986) pp. 49–63Google Scholar
  9. /9/.
    R.A. Fox, W.D. Hamilton, D.D. Warner, J. Phys.A7 (1974) 1716ADSGoogle Scholar
  10. /10/.
    B. Perczuk, J.A. Barclay, Phys. Lett.49A (1974) 175ADSGoogle Scholar
  11. /11/.
    W.C. Easley, J.A. Barclay, D.A. Shirley, Phys. Rev.170 (1968) 1083CrossRefADSGoogle Scholar
  12. /12/.
    H. Marshak, W.D. Brewer et al., Phys. Rev. Lett59 (1987) 1764CrossRefADSGoogle Scholar
  13. /13/.
    M. Elzinga, D.T. Morelli, C. Uher, Phys. Rev.B26 (1982) 3312ADSGoogle Scholar
  14. /14/.
    C.K. Chau, S.Y. Lu, J. Low Temp. Phys.15 (1974) 447CrossRefGoogle Scholar

Copyright information

© J.C. Baltzer A.G., Scientific Publishing Company 1998

Authors and Affiliations

  • B. Kastelein
    • 1
  • B. Borst
    • 1
  • A. J. de Jong
    • 1
  • H. Postma
    • 1
  • H. C. Meijer
    • 1
  1. 1.Dept. of Applied PhysicsDelft University of TechnologyGA DelftThe Netherlands

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