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Hysteresis curves of the flux motion in YBa2Cu3O7-δ thin films with nanoscale pinning centers

A. V. POP1,* , C. LUNG1, D. RADULESCU2, V. POP3

Affiliation

  1. University Babes-Bolyai, Faculty of Physics, University “Babes-Bolyai”, 3400 Cluj-Napoca, Romania
  2. UMF Cluj-Napoca,str.Tabacarilor,3400 Cluj-Napoca, Romania
  3. Technical University Cluj-Napoca, Faculty of Materials Science and Engineering, Department of Physics, 400641, Cluj- Napoca, Romania

Abstract

Epitaxial YBa2Cu3O7-δ thin films were prepared by DC magnetron sputtering technique. The Y2O3 nanoprecipitates were evidenced the complete thickness. Magnetic hysteresis measurements using a SQUID based DC magnetometer were performed. From the M(H) curve we deduced the critical current density Jc values function of magnetic field. The Kim and Bean critical state models were used for estimation of Jc..

Keywords

Y:123 thin film, nanoparticulate, DC magnetization.

Submitted at: April 1, 2008
Accepted at: July 1, 2008

Citation

A. V. POP, C. LUNG, D. RADULESCU, V. POP, Hysteresis curves of the flux motion in YBa2Cu3O7-δ thin films with nanoscale pinning centers, Journal of Optoelectronics and Advanced Materials Vol. 10, Iss. 7, pp. 1869-1871 (2008)