Journal of Superconductivity

, Volume 7, Issue 2, pp 283–285 | Cite as

Magnetostriction of HTSC single crystals

  • N. Hirota
  • H. Ikuta
  • L. K. Heill
  • T. Yasunaka
  • K. Kishio
  • K. Kitazawa
IX. Critical Field, Vortex Structure

Abstract

We have measured the sample length change of HTSC single crystals in the superconducting state in a magnetic field. The magnetic field was applied parallel to the crystallinec-axis direction and was swept at a constant rate of 10 mT/s up to 6 T. The sample length change was measured along theab-plane direction, i.e., perpendicular to the field. We have found for the Bi2Sr2CaCu2O8 single crystals that the relative sample length change (ΔL/L) is extraordinarily large for a superconductor, on the order of 10−4. For the case of (La1−xSr x )2CuO4, the amount of magnetostriction was not as large as for the Bi system, but the magnetostriction curves had many similarities. For both compounds, a relaxation phenomenon was observed when the field sweep was suspended at a certain field value. These observations are discussed in relation to flux line pinning.

Key words

Magnetostriction pinning effect flux creep HTSC single crystals 

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References

  1. 1.
    G. Brändli and R. Griessen,Cryogenics 13, 299 (1973).Google Scholar
  2. 2.
    E. du Tremolet de Lacheisserie, B. Barbara, and J. H. Henry,J. Magn. Magn. Mater. 71, L125 (1988).Google Scholar
  3. 3.
    M. Braden, P. Böhm, F. Seidler, H. Kalenborn, and D. Wohlleben,Z. Phys. B: Cond. Matter 79, 173 (1990).Google Scholar
  4. 4.
    H. Ikuta, N. Hirota, Y. Nakayama, K. Kishio, and K. Kitazawa,Phys. Rev. Lett. 70, 2166 (1993).Google Scholar

Copyright information

© Plenum Publishing Corporation 1994

Authors and Affiliations

  • N. Hirota
    • 1
  • H. Ikuta
    • 1
  • L. K. Heill
    • 1
  • T. Yasunaka
    • 1
  • K. Kishio
    • 1
  • K. Kitazawa
    • 1
  1. 1.Department of Industrial ChemistryUniversity of TokyoTokyoJapan

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