A44_ Effect of Nano-Sized ZnO on Electrical & Structural Properties of High Temperature Tl_2-x Hg_xBa₂Ca₂Cu₃O_10-δ Superconductors

Abstract:

The electrical resistivity of high temperature superconductivity Tl2_-xHg_xBa₂Ca₂Cu₃O_{10- δ} has been measured in the temperature range from 90K to 330K. These results showed that the critical temperature of the zero resistivity increases from 127K to 138K ,when the Hg concentration increased from 0 to 0.5. The structure of the Tl_2-xHg_xBa₂Ca₂Cu₃O_10-δ compound has also investigated by using X- ray diffraction technique. This compound has tetragonal type structure with a=b=5.36A & c=36.09A and the magnitude of c-axis increases to 37.8A when x increased to 0.5. Nano ZnO was add to the sample with concentration (0-1) wt% of the ( Tl_{2- x}Hg_xBa₂Ca₂Cu₃O_{10- δ}) samples mass. The effect of the nano ZnO concentration substitution on the samples investigated on structure and critical temperature of the best sample properties (when x=0.5)and showed that the structure remains tetragonal and c-axis increased to 39.2A when nano sized concentration 0.8% and T_c increase to 146K but c-axis decreased to 38.4A and T_c decreased to 143K when the ZnO concentration 1%.

• Periodical: Advanced Materials Research (Volume 925)
• Pages: 436-441
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.925.436
• Online since: April 2014
• Authors: Sabah Jalal Fathi
• Keywords: Electrical Properties, High Temperature Superconductor (HTS), Structural

References

[1] S.N. Putilin, E.V. Antipov, O. Chmaisssem and Marezio: Nature. 362(1993)226.

[2] Li J., S.Y. Ding, J.S. Zhu, H.M. Shao and Y.N. Wang:J. Appl. Phy. 77(1995)3698.

[3] A. Asab, A.R. Armstrong, I. Gameson and P.P. Edwards: Physica C 255(1995)180.

[4] H. Maeda and Y. Tanaka:J. Apppl. 27(1988)L209.

[5] R.M. Hazen: Sci. A m. 258(1988)52.

[6] Z.Z. Sheny and A.M. Hermann: Nature 332(1988)138.

[7] C.W. Chu, L. Gao, F. Chen, Z. T Huang, R.L. Meng and Y.Y. Xae: Nature.

[8] Y.C. Guo, y. Tanka, T. Kuroda, S.X. Dou and Z.Q. Yang: Physica C 311(1999)65.

[9] W. Wei, J. Schwartz, K. Goretta, U. Balachndran and A. Bhargava: Physica C 298(1998)279.

[10] Z. Jia, H. Tang, Z. Yang, Y. Xing, Y. Wang, G. Qioo: Physica C 3337(2000)130.

[11] T. Haugan, W. Wang-Ng, L. Co0ker, H. Brown , L. Swartzendruber and D. Shaw: Physica C3335(2000)129.

[12] S. Sengupta, V. Todt, P. Koshic, Y. Chen, M. Lanagan and K. Gorettta: Physica C 264(1996)34.

[13] R. Awad :J. Supercon. Nov. Magn 21(2008)461.

[14] M. Elokr, R. Awad, A. Asmaa, A. Aboushama and A. Abd El-wanis:J. supercond Nov. Mangn. 24(2011)1345.

[15] E. Guilmeau, B . Anderzejweski & J. Noudem, phys. C 287(2003)382.

[16] Y. Jia. &A. Zett: Phy . C 235(1994)1491. `.