Journal of Low Temperature Physics

, Volume 103, Issue 3–4, pp 159–181 | Cite as

Vacancy induced atomic motion in3He-4He mixture crystals on the melting curve studied by NMR imaging

  • I. Schuster
  • E. Polturak
  • Y. Swirsky
  • E. J. Schmidt
  • S. G. Lipson
Articles
Received:
Revised:

Abstract

We report the results of an NMR imaging study of3He-4He mixture crystals in coexistence with the liquid. Data were obtained for 7 different3He concentrations between 0.7% and 12.12%, in the temperature range between 0.45 K and 1.3 K, along the melting curve. We imaged the spatial distribution of the density3He, and that ofT1, andT2 relaxation times in the solid and in the liquid along the vertical direction of the experimental cell, perpendicular to the solid-liquid interface. We find significant differences between the dynamics of3He atoms in hep and bcc solid phases. These can be attributed to the different properties of thermally activated vacancies in the two phases. Specifically, in the bcc phase above 1 K, vacancy induced motion of3He atoms in the solid is faster than the motion in the liquid. We interpret this finding in terms of a3He-vacancy bound state. Finally, we examine our results within the broader context of finding a consistent description of the properties of vacancies in solid He.

Keywords

Spatial Distribution Relaxation Time Imaging Study Magnetic Material Vertical Direction 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
This is a preview of subscription content, log in to check access.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Y. Carmi, E. Polturak and S. Lipson,Phys. Rev. Lett. 62, 1364 (1989).Google Scholar
  2. 2.
    V. L. Vvedenskii,JETP Lett. 24, 132 (1976).Google Scholar
  3. 3.
    D. D. Osheroff, W. J. Gully, R. C. Richardson and D. M. Lee,Phys. Rev. Lett. 29, 920 (1972).Google Scholar
  4. 4.
    R. A. Guyer, R. C. Richardson and L. I. Zane,Rev. Mod. Phys. 43, 532 (1971).Google Scholar
  5. 5.
    D. S. Miyoshi, R. M. Cotts, A. S. Greenberg and R. C. Richardson,Phys. Rev. A 2, 870 (1970).Google Scholar
  6. 6.
    A. R. Allen and M. G. Richards,Phys. Lett. A 65, 36 (1978).Google Scholar
  7. 7.
    A. R. Allen, M. G. Richards and J. Schratter,J. Low Temp. Phys. 47, 289 (1982).Google Scholar
  8. 8.
    J. Schratter, A. R. Allen and M. G. Richards,J. Low Temp. Phys. 57, 179 (1984).Google Scholar
  9. 9.
    M. G. Richards, J. Pope, P. S. Tots and J. H. Smith,J. Low Temp. Phys. 24, 1 (1976).Google Scholar
  10. 10.
    M. G. Richards, J. Pope and A. Widom,Phys. Rev. Lett. 29, 708 (1972).Google Scholar
  11. 11.
    V. A. Mikheev, V. A. Maidanov and N. P. Mikhin,Fiz. Nizk. Temp. 8, 1000 (1982), [Sov. J. Low Temp. Phys.8, 505 (1982)].Google Scholar
  12. 12.
    N. V. Grigor'ev, B. N. Enel'son and V. A. Mikheev,Fiz. Nizk. Temp. 1, 5 (1975), [Sov. J. Low Temp. Phys.1, 1 (1975)].Google Scholar
  13. 13.
    N. V. Grigor'ev, B. N. Esel'son and V. A. Mikheev,Fiz. Nizk. Temp. 1, 1318 (1975), [Sov. J. Low Temp. Phys.1, 632 (1975)].Google Scholar
  14. 14.
    Y. Hirayoshi, T. Mizusaki, S. Maegawa and A. Hirai,J. Low Temp. Phys. 30, 137 (1978).Google Scholar
  15. 15.
    Y. Hirayoshi, T. Mizusaki, S. Maegawa and A. Hirai,Phys. Lett. A 57, 359 (1976).Google Scholar
  16. 16.
    A. F. Andreev and I. M. Lifshitz,Sov. Phys. JETP 29, 1107 (1969).Google Scholar
  17. 17.
    J. E. Everett and J. E. Osemeikhian,J. Sci. Instrum. 43, 470 (1966).Google Scholar
  18. 18.
    P. Mansfield and P. G. Morris,NMR Imaging in Biomedicine. Academic Press, 1982.Google Scholar
  19. 19.
    Y. Swirski, Ph.D. thesis, Technion (1991).Google Scholar
  20. 20.
    C. Le Pair, K. W. Taconis, R. De Bruyn Ouboter, P. Das and E. De Jong,Physica 31, 764 (1965).Google Scholar
  21. 21.
    P. M. Tedrow and D. M. Lee,Phys. Rev. 181, 399 (1969).Google Scholar
  22. 22.
    D. O. Edwards and S. Balibar,Phys. Rev. B 39, 4083 (1989).Google Scholar
  23. 23.
    J. E. Singer,J. Phys. E 11, 281 (1978).Google Scholar
  24. 24.
    V. N. Lopatik,Sov. Phys. JETP 59, 284 (1984).Google Scholar
  25. 25.
    A. Landesman,J. Low Temp. Phys. 17, 365 (1974).Google Scholar
  26. 26.
    C. A. Burns and J. M. Goodkind,J. Low Temp. Phys. 95, 695 (1994).Google Scholar
  27. 27.
    N. E. Dyumin, N. V. Zuev, V. V. Boiko and V. N. Grigor'ev,J. Low Temp. Phys. 19, 696 (1993).Google Scholar
  28. 28.
    J. H. Hetherington,J. Low Temp. Phys. 32, 173 (1978).Google Scholar
  29. 29.
    D. S. Greywall,Phys. Rev. B 15, 2604 (1977).Google Scholar
  30. 30.
    J. K. Hoffer, W. R. Gardner, C. G. Waterfield, and N. E. Philips,J. Low Temp. Phys. 23, 63 (1976).Google Scholar
  31. 31.
    S. C. Steel, P. Remeijer, G. Frossati, and J. M. Goodkind,Physica B 194–196, 953 (1994).Google Scholar
  32. 32.
    J. F. Jarvis, D. Ramm, and H. Meyer,Phys. Rev. 170, 320 (1968).Google Scholar
  33. 33.
    I. Fujita, Ph.D. thesis, Illinois (1994).Google Scholar
  34. 34.
    C. A. Burns and J. M. Goodkind,J. Low Temp. Phys. 93, 15 (1993).Google Scholar
  35. 36.
    B. A. Fraass, P. R. Granfors, and R. O. Simmons,Phys. Rev. B 39, 124 (1989).Google Scholar
  36. 37.
    P. R. Granfors, B. A. Fraass, and R. O. Simmons,J. Low Temp. Phys. 67, 353 (1987).Google Scholar
  37. 38.
    J. Friedel,Dislocations, Pergamon Press (1964).Google Scholar
  38. 39.
    A. A. Levchenko and L. P. Mezhov Deglin,Sov. Phys. JETP 59, 1234 (1984).Google Scholar
  39. 40.
    G. A. Lengua and J. M. Goodkind,J. Low Temp. Phys. 79, 251 (1990).Google Scholar
  40. 41.
    D. P. Locke and R. A. Young,J. Low Temp. Phys. 23, 177 (1976).Google Scholar
  41. 42.
    R. J. Borg and G. J. Dienes,An Introduction to Solid State Diffusion, Academic Press (1988).Google Scholar
  42. 43.
    I. Berent, private communication.Google Scholar
  43. 44.
    B. Cowan,Physica B 194–196, 947 (1994).Google Scholar

Copyright information

© Plenum Publishing Corporation 1996

Authors and Affiliations

  • I. Schuster
    • 1
  • E. Polturak
    • 1
  • Y. Swirsky
    • 1
  • E. J. Schmidt
    • 1
  • S. G. Lipson
    • 1
  1. 1.Department of PhysicsTechnion-Israel Institute of TechnologyHaifaIsrael

Personalised recommendations