The Role of Weak Links and Zn-Doping on Magnetic Parameters of High- T Superconductors.

Autor:	Topal, Ugur, Coker, E., Alıkma, Fatma, Kolemen, Ugur, Uzun, Orhan
Předmět:	ZINC DOPING agents (Chemistry) HIGH temperature superconductors MAGNETIC properties of metals SECOND harmonic generation POLYCRYSTALS SUPERCONDUCTORS ALTERNATING currents
Zdroj:	Journal of Superconductivity & Novel Magnetism; Jan2014, Vol. 27 Issue 1, p133-141, 9p
Abstrakt:	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 YBaCuZnO ( 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. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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