The Role of Weak Links and Zn-Doping on Magnetic Parameters of High-T (c) Superconductors

Topal U., Coker E. G., Alikma F., Kolemen U., Uzun O.

JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM, cilt.27, sa.1, ss.133-141, 2014 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 27 Sayı: 1
  • Basım Tarihi: 2014
  • Doi Numarası: 10.1007/s10948-013-2280-7
  • Dergi Adı: JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.133-141
  • Anahtar Kelimeler: Superconductors, Superconductivity, Magnetometer, Magnetic properties, VICKERS HARDNESS PROPERTIES, MECHANICAL-PROPERTIES, NONLINEAR ELECTRODYNAMICS, SENSING INDENTATION, HARMONIC-GENERATION, GRAIN-BOUNDARIES, SENSORS, YBA2CU3O7, MAGNETOMETER, SENSITIVITY
  • Yozgat Bozok Üniversitesi Adresli: Hayır

Özet

The second harmonic signal, which is generated by co-application of AC and DC fields to polycrystalline type-II superconductors, were analyzed in terms of the weak links and the critical current density. With this aim the YBa2Cu3-x Zn (x) O7-y (x=0, 0.01, 0.02, 0.03, 0.05, and 0.1) samples were synthesized in order to adjust intergranular couplings and thus the strength of weak links. The mechanical and magnetic measurements are in good agreement on that Zn doping reduces strength of the links between grains; however, contrary to the common expectations, it has no direct contribution to the 2nd harmonic signal strength.