Mechanical and superconducting properties of nanosize MgO added dip-coated Bi2Sr2CaCu2O8 superconducting tape

Nasri A  Hamid; Mohd Yusri Abd  Rahman; Noor Fairuz  Shamsudin

doi:10.4236/ns.2011.36067

Nasri A Hamid^*, Mohd Yusri Abd Rahman, Noor Fairuz Shamsudin

Abstract: In this work, 3% to 8% (in weight) of nanosize MgO particles was added to Bi2Sr2CaCu2O8 (Bi- 2212) high-temperature superconductor to fab-ricate Bi-2212 superconducting material with superior mechanical properties. The mechanical strength of the samples was studied by con-ducting the compression test at room tempera-ture, and the addition of 5% nanosize MgO par-ticles produced the highest strength when com- pared with other samples. The sample with 5% MgO addition also exhibited superior super-conducting properties. The Bi-2212 powder with 5% nanosize MgO addition was used to fabricate Bi-2212 tapes through the dip-coating-then- stacking method. The fully processed tapes were investigated via dc electrical resistance measurements, XRD patterns, SEM micrographs, transport critical current density and tensile tests. The tensile tests were conducted at room and cryogenic (77 K) temperatures. Results of tensile tests and Young’s modulus for the tapes showed that the Bi-2212 tapes with nanosize MgO addition recorded better mechanical prop-erty compared to the non-added samples both at room and cryogenic temperatures. The double- core tape with 5% MgO addition recorded the highest failure point at 160 MPa. In addition to the strengthening effect that was observed in the nanosize MgO added Bi-2212 superconduc-tor tapes, the superconducting properties re-mained intact in the tapes.

Keywords: Bi-2212 Superconductor; Electrical Properties; Mechanical Properties; High Current Density; Cryogenic Temperature

Cite this paper: Hamid, N. , Rahman, M. and Shamsudin, N. (2011) Mechanical and superconducting properties of nanosize MgO added dip-coated Bi₂Sr₂CaCu₂O₈ superconducting tape. Natural Science, 3, 484-487. doi: 10.4236/ns.2011.36067.

References

[1] Yuan, Y.S., Wong, M.S. and Wang, S.S. (1996) solid-state processing and phase development of bulk(MgO) w/BPSCCO high-temperature superconducting composite. Journal of Materials Research, 11, 8-17.

[2] Nomura, K., Sasaoka, T., Sato, J., Kuma, S., Kumakura, H., Togano, K. and Tomita, N. (1994) Influence of Ag‐Au and Ag‐Cu alloys on Bi2Sr2CaCu2Ox superconductor. Applied Physics Letters, 64, 112-114. doi:10.1063/1.110895

[3] Li, T.W., Drost, R.J., Kes, P.H., Tr?holt, H.W., Zandbergen, H.W., Hien, N.T., Menovsky, A.A. and Franse, J.J.M. (1997) Enhanced flux pinning in Bi-2212 single crystals by planar defects introduced via Ti-substitution. Physica C, 274, 197-203. doi:10.1016/S0921-4534(96)00699-5

[4] Chen, Y. J., Li, J. B., Han, Y. S., Yang, X. Z. and Dai, J. H. (2003) Fabrication of decorated MgO crystalline fibers. Materials Research Bulletin, 38, 445-452.

[5] Chen, M., Glowacka, D.M., Soylu, B., Watson, D.R., Christiansen, J.K.S., Baranowski, R.P., Glowacki, B.A. and Evetts, J.E. (1995) Texture and critical current anisotropy in composite reaction textured MgO whisker/ Bi-2212 multilayer structures. IEEE Transactions on Applied Superconductivity, 5, 1467-1470. doi:10.1109/77.402843

[6] Watson, D.R., Chen, M. and Evetts, J.E. (1995) The fabrication of composite reaction textured Bi2Sr2CaCu2O8+ delta superconductors. Superconductor Science and Technology, 8, 311.

[7] Wei, W., Schwartz, J., Goretta, K.C., Balachandran, U. and Bhargava, A. (1998) Effects of nanosize MgO additions to bulk Bi2.1Sr1.7CaCu2Ox. Physica C, 298, 279-288. doi:10.1016/S0921-4534(97)01889-3

[8] Ni, B., Tomishige, Y., Xiong, J. and Zhao, Z.X. (1999) Flux pinning due to MgO particle additions in partial-melt processed Bi-2212 bulk. IEEE Transactions on Applied Superconductivity, 9, 2347-2350. doi:10.1109/77.784942

[9] Agranovski, I.E., Ilyushechkin, A.Y., Altman, I.S., Bostrom, T.E. and Choi, M. (2006) Physica C, 434, 115. doi:10.1016/j.physc.2005.12.005

[10] Müller, C., Majewski, P., Thürn, G. and Aldinger, F. (1997) Processing effects on mechanical and superconducting properties of Bi2201 and Bi2212 glass ceramics. Physica C: Superconductivity, 275, 337-345. doi:10.1016/S0921-4534(97)00026-9

[11] Sung, Y.S., Kumakura H. and Togano, K. (2000) Dip-coated multi-core (Bi,Pb)2Sr2Ca2Cu3Ox tape process —an alternative way of fabricating multi-core (Bi,Pb)2Sr2Ca2Cu3Ox tape conductors. Physica C: Superconductivity, 331, 171-177. doi:10.1016/S0921-4534(00)00002-2

[12] Tamura, H., Mito, T., Iwamoto, A., Yamada, Y. and Tachikawa, K. (2002) Mechanical properties and reinforcement of Bi-2212 tubular bulk superconductor for current lead. IEEE Transactions on Applied Superconductivity, 12, 1319. doi:10.1109/TASC.2002.1018645

[13] Miyase, A., Yuan, Y.S., Wong, M.S., Sch?n, J. and Wang, S.S. (1995) Cryogenic- and room-temperature mechanical behaviour of an Al2O3-fibre-reinforced high-temper- ature superconducting (Bi,Pb)2Sr2Ca2Cu3Ox ceramic matrix composite. Superconductor Science and Technology, 8, 626. doi:10.1088/0953-2048/8/8/005

[14] Salib, S., Mironova, M., Vipulanandan, C. and Salama, K. (1996) Mechanical properties and TEM studies on BPSCCO-2223 - Ag composite tapes. Superconductor Science and Technology, 9, 1071. doi:10.1088/0953-2048/9/12/009