Enhancement of the critical current density in FeO-coated MgB2 thin films at high magnetic fields

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Surdu A. E., Hamdeh H. H., Al-Omari I. A., Sellmyer D. J., Socrovisciuc A. V., Prepelita A. A., ...Daha Fazla

BEILSTEIN JOURNAL OF NANOTECHNOLOGY, cilt.2, ss.809-813, 2011 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 2
  • Basım Tarihi: 2011
  • Doi Numarası: 10.3762/bjnano.2.89
  • Dergi Adı: BEILSTEIN JOURNAL OF NANOTECHNOLOGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.809-813
  • Karadeniz Teknik Üniversitesi Adresli: Hayır

Özet

The effect of depositing FeO nanoparticles with a diameter of 10 nm onto the surface of MgB2 thin films on the critical current density was studied in comparison with the case of uncoated MgB2 thin films. We calculated the superconducting critical current densities (J(c)) from the magnetization hysteresis (M-H) curves for both sets of samples and found that the J(c) value of FeO-coated films is higher at all fields and temperatures than the J(c) value for uncoated films, and that it decreases to similar to 10(5) A/cm(2) at B = 1 T and T = 20 K and remains approximately constant at higher fields up to 7 T.