IDEAS home Printed from
MyIDEAS: Log in (now much improved!) to save this article

Third harmonics of the AC magnetic susceptibility: a method for the study of flux dynamics in high temperature superconductors

Listed author(s):
  • M. Polichetti
  • M. Adesso


  • S. Pace
Registered author(s):

    The temperature dependence of the 1st and 3rd harmonics ( $\chi^{\prime ,\prime\prime}_{1,3}$ ) of the AC magnetic susceptibility has been measured on melt grown YBCO samples for different frequencies and amplitudes of the AC magnetic field and intensity of a contemporaneously applied DC field. With the help of critical state models and of numerical simulations [22], we have devised a novel method, based on the combined analysis of the 1st and the 3rd harmonics (specifically on the comparison between $\chi"_1$ and $\chi'_3$ ), that allows to distinguish different temperature ranges dominated by the different dissipative magnetic flux regimes. In particular, we identified three principal “zones” in the temperature dependence of the real part of the 3rd harmonic: the “zone 1”, in the temperature range below the peak of the imaginary part of the 1st harmonic, $T_{p}(\chi"_1)$ , and the “zone 2”, characterized by $\chi'_3$ negative values in a temperature region just above $T_{p}(\chi"_1)$ , both dominated by the creep regime; the zone 3, just below T c , in which we revealed the presence of Thermally Assisted Flux Flow (TAFF). By the identification of these “zones”, an estimation of the value of the pinning potential can be obtained. Copyright Springer-Verlag Berlin/Heidelberg 2003

    If you experience problems downloading a file, check if you have the proper application to view it first. In case of further problems read the IDEAS help page. Note that these files are not on the IDEAS site. Please be patient as the files may be large.

    File URL:
    Download Restriction: Access to full text is restricted to subscribers.

    As the access to this document is restricted, you may want to look for a different version under "Related research" (further below) or search for a different version of it.

    Article provided by Springer & EDP Sciences in its journal The European Physical Journal B - Condensed Matter and Complex Systems.

    Volume (Year): 36 (2003)
    Issue (Month): 1 (November)
    Pages: 27-36

    in new window

    Handle: RePEc:spr:eurphb:v:36:y:2003:i:1:p:27-36
    DOI: 10.1140/epjb/e2003-00314-1
    Contact details of provider: Web page:

    Web page:

    Order Information: Web:

    No references listed on IDEAS
    You can help add them by filling out this form.

    This item is not listed on Wikipedia, on a reading list or among the top items on IDEAS.

    When requesting a correction, please mention this item's handle: RePEc:spr:eurphb:v:36:y:2003:i:1:p:27-36. See general information about how to correct material in RePEc.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Sonal Shukla)

    or (Rebekah McClure)

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If references are entirely missing, you can add them using this form.

    If the full references list an item that is present in RePEc, but the system did not link to it, you can help with this form.

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your profile, as there may be some citations waiting for confirmation.

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    This information is provided to you by IDEAS at the Research Division of the Federal Reserve Bank of St. Louis using RePEc data.