학술논문
Critical Current and Vortex Pinning Properties in YBa2 Cu3 O7-x Films With Ba2 YTaO6 + Ba2 YNbO6 and BaZrO3 Nanoinclusions by DC Transport and Microwave Measurements.
Document Type
Article
Author
Source
Subject
*NANOCOMPOSITE materials
*COMPOSITE materials
*VECTOR beams
*VORTEX motion
*AERODYNAMICS
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Language
ISSN
1051-8223
Abstract
The transport and vortex pinning properties of nanocomposite YBa2Cu3O7-x (YBCO) film grown by pulsed laser deposition with addition of Ba2 Y(Nb/Ta)O6 (BYNTO) were compared with BaZrO3 added YBCO by DC (long-range vortex motion) and microwave (small-displacement vortex motion) measurement techniques. A high efficiency of BYNTO was observed in the field dependence and in the angular dependence of the critical current density Jc at 77 K, as well as in the field dependence of the complex surface impedance ΔZ. Based on the field dependence of the pinning parameters, such as the pinning parameter r and the pinning constant kp, the vortex pinning regimes were discussed. [ABSTRACT FROM AUTHOR]