Angular-Dependent Vortex Pinning Properties of YBa{sub 2}Cu{sub 3}O{sub 7−δ}/Y{sub 2}O{sub 3} Quasi-Multilayers

Journal Article · Mon Jan 15 00:00:00 EST 2018 · Journal of Superconductivity and Novel Magnetism

DOI:https://doi.org/10.1007/S10948-017-4195-1· OSTI ID:22774146

Zhong, H. X.; Liu, X. M.; Boubeche, M.; Guo, Y. Q.; Li, M. J.; Bai, C. Y.; Liu, Z. Y.; Lu, Y. M.

A series of quasi-multilayers of YBa{sub 2}Cu{sub 3}O{sub 7−δ} (YBCO)/Y{sub 2}O{sub 3} specifically 70 × (m YBCO/n Y{sub 2}O{sub 3}) were prepared on SrTiO{sub 3} single crystal using pulsed-laser deposition (PLD) with a controlled deposition pulses of m = 40 and n = 2, 5, and 10 for YBCO and Y{sub 2}O{sub 3}, respectively. The x-ray diffraction patterns indicate that all the present quasi-multilayers exhibit good c-axis orientation. The angular dependence of critical current density (J{sub c}) on applied magnetic field directions are systemically measured to study the anisotropic vortex pinning performances for those quasi-multilayers. It is revealed that compared with the pure YBCO films, the quasi-multilayers with n = 2, i.e., a proper constituent pulse of Y{sub 2}O{sub 3}, exhibits the enhanced vortex pinning abilities in all angles between c-axis orientation and the applied magnetic field direction. As well, such a quasi-multilayer film (n = 2) shows the higher lift factor J{sub c}(Θ)/ J{sub c}(90°) and much better vortex pinning properties at high fields and high temperatures, showing promising potential for coated conductor application.

• OSTI ID: 22774146
• Journal Information: Journal of Superconductivity and Novel Magnetism, Vol. 31, Issue 1; Other Information: Copyright (c) 2018 Springer Science+Business Media, LLC, part of Springer Nature; Article Copyright (c) 2017 Springer Science+Business Media, LLC; http://www.springer-ny.com; Country of input: International Atomic Energy Agency (IAEA); ISSN 1557-1939
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANISOTROPY
BARIUM OXIDES
COPPER OXIDES
CRITICAL CURRENT
ENERGY BEAM DEPOSITION
HIGH-TC SUPERCONDUCTORS
LASER RADIATION
LAYERS
MAGNETIC FIELDS
MONOCRYSTALS
PULSED IRRADIATION
PULSES
STRONTIUM TITANATES
TEMPERATURE RANGE 0400-1000 K
THIN FILMS
VORTICES
X-RAY DIFFRACTION
YTTRIUM OXIDES