In-plane properties of (103)/(013) oriented YBCO films
- Consiglio Nazionale delle Ricerche, Arco Felice (Italy). Ist. di Cibernetica
- Ben Gurion Univ. of the Negev, Beer-Sheva (Israel). Dept. of Physics
The anisotropic in-plane electrical and superconducting behavior of (103)/(013) oriented YBCO films has been investigated. The 150 nm thick samples were fabricated on (110) SrTiO{sub 3} substrates by dc sputtering from an inverted cylindrical magnetron, using a self-template growth process. The (103)/(013) lattice orientation was confirmed by the X-ray diffractometry measurements and by polarized-light Raman spectroscopy. The film was patterned in 20 {micro}m width lines, in-plane oriented along different directions, in order to estimate the dependence of properties on the crystal orientation. Concerning the normal state electrical resistance, measured by a four contacts method at 100 K, a value {rho}{sub ab} = 0.64 m{Omega} cm and {rho}{sub c} = 3.50 m{Omega} cm is found for the bias current directed respectively along and across the copper planes. The current voltage (I-V) characteristics were measured at different temperatures. As expected the critical current density J{sub o} is larger for the lines aligned with the copper planes, and decreases with decreasing of the angle between current bias direction and the normal to the copper planes. The influence on vortex pinning of lattice twins occurring at the (103) and (013) grain boundaries is considered by analyzing the J{sub o} vs T dependence and the I-V characteristics compared with c-axis YBCO film standard features.
- OSTI ID:
- 687419
- Report Number(s):
- CONF-9810174-; ISSN 0217-9792; TRN: 99:010374
- Journal Information:
- International Journal of Modern Physics B, Vol. 13, Issue 9-10; Conference: 9. national congress on high temperature superconductivity (SATT9), Ravenna (Italy), 6-9 Oct 1998; Other Information: PBD: 20 Apr 1999
- Country of Publication:
- United States
- Language:
- English
Similar Records
Anisotropy of the transport properties in YBa{sub 2}Cu{sub 3}O{sub 7-{delta}} (110) thin films
Growth and properties of YBCO thin films on polycrystalline Ag substrates by inclined substrate pulsed laser ablation.