Higher intra-granular and inter-granular performances of YBCO superconductor with TiO2 nano-sized particles addition

Hannachi E., SLIMANI Y., BEN AZZOUZ F., EKİCİBİL A.

CERAMICS INTERNATIONAL, vol.44, no.15, pp.18836-18843, 2018 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 44 Issue: 15
  • Publication Date: 2018
  • Doi Number: 10.1016/j.ceramint.2018.07.118
  • Journal Name: CERAMICS INTERNATIONAL
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.18836-18843
  • Keywords: Y-123 superconductor, TiO2 nanoparticles, Microstructure, Electrical property, Intra-granular property, Inter-granular property, PINNING PROPERTIES, SIO2 NANOPARTICLES, CU-O, MICROSTRUCTURE, FILMS, CONDUCTIVITY, YBA2CU3O7-D, TRANSPORT, AL2O3, STATE
  • Çukurova University Affiliated: Yes

Abstract

The impact of titanium oxide (TiO2) nanoparticles addition on the intra-granular and inter-granular properties of YBa2Cu3O7.y (Y-123) were thoroughly investigated. Specimens were produced through the solid-state reaction (SSR) route by adding small contents of TiO2 nano-entities. The phase identification was studied using the X-ray diffraction (XRD). The microstructure and the chemical composition were examined by scanning electron microscope (SEM) technique coupled with energy dispersive X-ray spectroscopy (EDXS) system. The electrical resistivity measurements were done using the conventional four probe technique. The intra-granular, inter granular and transport critical current densities of the synthesized specimens were explored through measurements of magnetization, ac-susceptibility and current-voltage, respectively. The possible pinning mechanisms predominant in synthesized compounds are estimated. The obtained results show that small amount of TiO2 nanoparticles improves the flux pinning capacity in Y-123 material.