期刊
CERAMICS INTERNATIONAL
卷 44, 期 15, 页码 18836-18843出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2018.07.118
关键词
Y-123 superconductor; TiO2 nanoparticles; Microstructure; Electrical property; Intra-granular property; Inter-granular property
资金
- Institute for Research and Medical Consultations (IRMC)
- Imam Abdulrahman Bin Faisal University (IAU) [2018-209-IRMC, 2017-576-IRMC]
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.
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