Effect of Substrate Temperature on the Critical Current Density in the YBa2Cu3O7-x Superconducting Films

Tran Hai Duc, Duong Thi Thanh Nhan, Nguyen Huy Sinh

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Published Jun 15, 2016

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DUC, Tran Hai; NHAN, Duong Thi Thanh; SINH, Nguyen Huy. Effect of Substrate Temperature on the Critical Current Density in the YBa2Cu3O7-x Superconducting Films. VNU Journal of Science: Mathematics - Physics, [S.l.], v. 32, n. 2, june 2016. ISSN 2588-1124. Available at: <https://js.vnu.edu.vn/MaP/article/view/1685>. Date accessed: 29 dec. 2024.
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Issue
Vol 32 No 2
Section
Review Article

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Abstract

Abstract: A comparative study of effect of substrate temperature (Ts) on the critical current density (Jc) in YBa2Cu3O7-x (YBCO) superconducting films is reported. YBCO superconducting films were fabricated by using the pulsed laser deposition (PLD) technique. The substrate temperature was ranged from 720 to 800 oC in order to find its optimum value for depositing YBCO films. Results of structural measurements the YBCO films showed that the lattice parameter c were depended on the substrate temperature. The largest value of lattice parameter c calculated from Xray diffraction patterns was obtained for the YBCO film deposited at 780 oC. More interestingly, the critical current density of the YBCO films measured at 65 K also depended on the substrate temperature. The highest value of critical current density of ~ 5.7 MA/cm2 was also found at the YBCO film deposited at 780 oC. Consequently, the optimum value of Ts of 780 oC might be concluded.

Keywords:  YBCO, thin film, Jc.

References

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