Evaluation of vortex pinning across low angle grain boundary in YBa{sub 2}Cu{sub 3}O{sub 7} film

Journal Article · Mon Sep 10 00:00:00 EDT 2012 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4752462· OSTI ID:22080436

Horide, Tomoya; Matsumoto, Kaname ^[1]

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1. Department Materials Science and Engineering, Kyushu Institute of Technology, 1-1 Sensui-cho, Tobata-ku, Kitakyushu 804-8550 (Japan)

Vortex pinning potential across a 5 Degree-Sign tilt low angle grain boundary (GB) was evaluated by measuring angular dependences of critical current density in a bicrystal YBa{sub 2}Cu{sub 3}O{sub 7} film under the variable Lorentz force configuration. Trapping angles of the GB depend on directions in the GB plane (70 Degree-Sign -80 Degree-Sign and 15 Degree-Sign -45 Degree-Sign for the c-axis direction and the ab plane one, respectively), due to anisotropic pinning of GB dislocations. Pinning potential across a GB is as large as that of heavy ion irradiated columnar defects, indicating that density and distribution of GBs should be controlled to improve vortex pinning in coated conductors.

• OSTI ID: 22080436
• Journal Information: Applied Physics Letters, Vol. 101, Issue 11; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANISOTROPY
BARIUM COMPOUNDS
BICRYSTALS
CRITICAL CURRENT
CUPRATES
DENSITY
DISLOCATION PINNING
DISTRIBUTION
EVALUATION
GRAIN BOUNDARIES
HEAVY IONS
HIGH-TC SUPERCONDUCTORS
ION BEAMS
LORENTZ FORCE
MAGNETIC FLUX
SUPERCONDUCTIVITY
THIN FILMS
VORTICES
YTTRIUM COMPOUNDS