Annealing Treatment of Bi (Pb)-Sr-Ca-Cu-O Thin Films on MgO by Pulsed Laser Deposition

作者：A N Jannah; S A Halim; H Abdullah

来源：Journal of Applied Sciences, 2009, 9(11): 2190-2193.

DOI：10.3923/jas.2009.2190.2193

• superconducting transition temperature (Tc)
• MgO
• Pulsed laser deposition
• thin film

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.

• 出版日期2009