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Irreversibility processes from AC magnetic susceptibilities in (Bi,Pb):2223 HTS system doped by 3d elements

A. V. POP1,* , D. MARCONI1, M. TOPAN1, M. POP2

Affiliation

  1. University Babes-Bolyai, Faculty of Physics, University “Babes-Bolyai”, Cluj-Napoca, Romania
  2. Technical University Cluj-Napoca, Faculty of Materials Science and Engineering, Department of Materials Processing Engineering,400641,Cluj-Napoca,Romania

Abstract

The effects of Cu partial substitution by Fe in (Bi,Pb):2223 bulk HTS were investigated by a.c. magnetic susceptibilities measurements function of temperature and magnetic field amplitude. The effective volume fractions of the grains were estimated function of Fe concentration. The irreversibility of intergranular processes is discussed in relation with the influence of magnetic field amplitude,aand the concentration of Fe on the critical current density..

Keywords

HTS synthesis, Nanodefects, AC magnetic susceptibility, Irreversibility.

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

Citation

A. V. POP, D. MARCONI, M. TOPAN, M. POP, Irreversibility processes from AC magnetic susceptibilities in (Bi,Pb):2223 HTS system doped by 3d elements, Journal of Optoelectronics and Advanced Materials Vol. 10, Iss. 7, pp. 1866-1868 (2008)