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| Titel: |
Annealing Treatment of Bi (Pb)-Sr-Ca-Cu-O Thin Films on MgO by Pulsed Laser Deposition |
| Auteur: |
A.N. Jannah S.A. Halim H. Abdullah |
| Verschenen in: |
Journal of applied sciences |
| Paginering: | Jaargang 9 (2009) nr. 11 pagina's 2190-2193 |
| Jaar: |
2009 |
| Inhoud: |
Bi (Pb)-Sr-Ca-Cu-O thin films have been fabricated using Nd-YAG Pulsed Laser Ablation on MgO(100) substrate. The XRD patterns of the as-deposited BSCCO films show broad structures characteristic of a glassy or amorphous material. XRD spectrum exhibit epitaxial growth of BSCCO (2212) after a high temperature oxygen annealing treatment. The possible reasons for such behavior are an improvement of the films morphology, optimization of oxygen content and a change of the phase composition of the thin films. The X-ray diffraction plot shows that a film deposited for 1 h and annealed at 850°C is c-axis oriented and film annealed at 860°C consists of low Tc phase as a major phase. An increase of annealed temperature to 870°C and 880°C led to increasing the intensity of low Tc phase and the appearance of semiconducting phase. The superconducting transition temperature, Tc is highest for sample annealed at 870°C. XRD spectrum exhibit epitaxial growth of BSCCO (2212) after a high temperature oxygen annealing treatment. A high quality thin film can be obtained by not only a suitable target but also a good choice and appropriate post annealing treatment is needed. |
| Uitgever: |
Asian Network for Scientific Information (provided by DOAJ) |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
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