A theoretical study for temperature dependence of levitation force of high-Tc superconductors

Inanir F., Yildiz Ş., Okutan M., KÖLEMEN U.

Physica C: Superconductivity and its Applications, cilt.485, ss.30-34, 2013 (SCI-Expanded, Scopus) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 485
  • Basım Tarihi: 2013
  • Doi Numarası: 10.1016/j.physc.2012.10.001
  • Dergi Adı: Physica C: Superconductivity and its Applications
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.30-34
  • Anahtar Kelimeler: Bulk superconductor, Critical state model, Magnetic levitation, Superconductivity
  • Samsun Üniversitesi Adresli: Hayır

Özet

The temperature effect on the levitation force of a cylindrical type-II superconductor was investigated theoretically by solving the critical state equation. Analytical expressions are obtained for the levitation force versus increasing temperature for zero-field-cooled (ZFC). Examining the behavior of levitation force-temperature curves the critical parameters are the critical current density, lower critical field and the pinning strength. The calculation qualitatively agrees with the experimental results for high-Tc superconductors. Employing exponential decay of the critical current density we have reproduced temperature-levitation measurements published in the literature. Some important macroscopic parameters may be obtained by fitting the expressions introduced in this paper with the experimental data. © 2012 Elsevier B.V. All rights reserved.