Abstract
Samples were prepared using solid state reaction method involved series of heating and grinding. Sucrose was adding during pelletization and after firing at 400°C in a box furnace, open pores were created. CaCo3 was substituted in Ba site of YBCO superconductor having a general formula Y2CaBa4Cu70y. All samples were characterized using He closed cycle four point probe to determine the critical temperature, Tc and critical current density, Jc, x-ray diffraction (XRD) for the structural properties and scanning electron microscopy (SEM) for morphology and orientation of samples. Generally, all samples displayed a normal metallic behaviour above Tc with a single transition. The values of Tc have been found to decrease towards Ca doping. From XRD, the crystal structure remains in orthorhombic where a * b ^ c for all samples. The crystal orientation becomes smaller when the pure sample was doped with Ca.
Metadata
Item Type: | Student Project |
---|---|
Creators: | Creators Email / ID Num. Muhd Yusof, Murnisafiah UNSPECIFIED |
Contributors: | Contribution Name Email / ID Num. Thesis advisor Hashim@Ismail, Azhan (Dr.) UNSPECIFIED |
Subjects: | Q Science > QC Physics > Heat > Thermal conductivity Q Science > QC Physics > Nuclear and particle physics. Atomic energy. Radioactivity Q Science > QC Physics > Nuclear and particle physics. Atomic energy. Radioactivity > Elementary particle physics |
Divisions: | Universiti Teknologi MARA, Shah Alam > Faculty of Applied Sciences |
Programme: | Bachelor of Science (Hons.) Physics |
Keywords: | Superconducting, Scanning electron microscopy (SEM), X-ray diffraction (XRD) |
Date: | 2011 |
URI: | https://ir.uitm.edu.my/id/eprint/45025 |
Download
45025.pdf
Download (102kB)