Publication Date:
2017-12-31
Description:
Strong and isotropic vortex pinning landscape is demanded for high field applications of YaBa 2 Cu 3 O 7-x (YBCO) epitaxial thin films. Double-doping (DD) of artificial pinning centers (APCs) of mixed morphologies has been identified as a viable approach for this purpose. This work presents a comparative study on the transport critical current density J c ( H , θ) of 3.0 vol.%Y 2 O 3 +2.0 (or 6.0) vol.% BaZrO 3 (BZO DD) and 3.0 vol.%Y 2 O 3 + 2.0 (or 6.0) vol.% BaHfO 3 (BHO DD) films. Based on the elastic strain model, BaHfO 3 (BHO) nanorods have lower rigidity than their BaZrO 3 (BZO) counterparts, which means their c-axis alignment is more susceptible to the local strain generated by the secondary dopant of Y 2 O 3 . Considering the increasing strain field with higher BZO (or BHO doping), the higher susceptibility may result in a larg...
Print ISSN:
1757-8981
Electronic ISSN:
1757-899X
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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