Turkish Journal of Physics
DOI
-
Abstract
The effect of hot-pressing (HPing) on the densification and the superconducting properties of YBCO were investigated. The phases and microstructure were analysed by XRD and SEM and transport properties were studied by I-V and AC susceptibility measurements. Relative density up to 93% and critical current density of 509 A/cm^{2} at 77 K were achieved through uniaxial HPing at 800°C under 325 kg/cm^{2} pressure for 4 hours. HPing raised the J_{c} from 80 A/cm^{2} to 509 A/cm^{2}. These results and AC susceptibility measurements reveal that the weak links or pinning forces were improved by increasing HPing pressure.
Keywords
A. High temperature superconductors; B. Hot pressing; C. YBCO; D. I-V; E. AC susceptibility.
First Page
435
Last Page
440
Recommended Citation
ÖZCAN, ŞADAN; FIRAT, TEZER; and ÖZDAŞ, ENGİN (2002) "Microstructure and Critical Current of Hot-Pressed YBCO Ceramics," Turkish Journal of Physics: Vol. 26: No. 6, Article 3. Available at: https://journals.tubitak.gov.tr/physics/vol26/iss6/3
