Effects of Slight Non-Stoichiometry in Sm-Ba-Cu-O Systems on Superconducting Characteristics

Maňka, J.; Cigáň, A.; Polovková, J.; Koňakovský, A.; Prnová, A.

doi:10.2478/v10048-011-0005-2

Abstract

We studied the effects of slight Sm-Ba non-stoichiometry in Sm-Ba-Cu-O superconducting compounds on their transition, structural, and magnetic properties. Two series of single-phase samples of Sm_1+xBa_2-xCu₃O_7+Δ and Sm_1+xBa_2-xCu₃O_7+Δ with composition deviation from stoichiometry x from 0 to 0.1 were synthesized by the solid-state reaction method from Sm₂O₃, BaCO₃ and CuO precursors and sintered at the temperature of ~ 1060 °C in flowing oxygen. All samples showed the values of T_c > 90 K and the volume density, p, 6.45 g cm^-3 < p ≤ 6.73 g cm^-3. The effect of the composite deviation of x on T_c, ΔT_c, and volume magnetization M was studied. For Sm_1+xBa_2-xCu₃O_7+Δ compounds, optimal values of x were determined to maximize the width of the magnetization hysteresis at higher values of the applied magnetic field, corresponding mainly to the grain contribution. We also prepared the Sm_1+xBa_2-xCu₃O_7+Δ samples with x from 0 to 0.1 using the same processing conditions as in the case of A and B series. For the Sm_1+xBa_2-xCu₃O_7+Δ samples, values of x = 0.02 - 0.03 optimize T_c, ΔT_c, H_p1 as well as M.

References

Osabe, G., Takizawa, T., Yoo, S. I., Sakai, N., Higuchi, T., Murakami, M. (1999). Studies of the Nd1+xBa2-xCu3Oy solid solutions. Mater. Sci. Eng. B-Solid State, 65 (1), 11-16.10.1016/S0921-5107(99)00191-9
Search in Google Scholar
Xu, Y., Kramer, M. J., Dennis, K. W., Wu, H., O‵Connor, A., McCallum, R. W., Malik, S. K., Yelon, W. B. (2000). Substitution for Ba by Pr, La, and Eu in Eu(Ba1-xRx)2Cu3O7+δ solid solutions. Physica C, 333 (3-4), 195-206.10.1016/S0921-4534(00)00192-1
Search in Google Scholar
Li, Y., Liu, Y., Duan, R., Xiong, X., Wang, B., Cao, G., Wei, L., Zheng, D. N., Zhao, Z. X., Ross, J. H. (2004). Positron annihilation study of the O-T phase transition for Eu1-xBa2-xCu3O7+δ superconductors. Physica C, 402 (1-2), 179-187.10.1016/j.physc.2003.09.081
Search in Google Scholar
Sano, M., Hayakawa, Y., Kumagawa, M. (1996). The effect of the substitution of Sm for Ba on the superconductor SmBa2Cu3Oy. Superconduct. Sci. Technol., 9 (6), 478-482.10.1088/0953-2048/9/6/007
Search in Google Scholar
Van Driessche, I., Schoofs, B., Bruneel, E., Hoste, S. (2004). The effect of processing conditions on the properties of spray dried Nd1Ba2Cu3Oy/Ag composite superconductors. J. Eur. Ceram. Soc., 24 (6), 1823-1826.10.1016/S0955-2219(03)00444-8
Search in Google Scholar
Drozd, V. A., Baginski, I. L., Nedilko, S. A., Meľnikov, V. S. (2004). Oxygen stoichiometry and structural parameters of Sm1+xBa2-xCu3Oy solid solutions versus composition and temperature. J. Alloys Compounds, 384 (1-2), 44-50.10.1016/j.jallcom.2004.03.125
Search in Google Scholar
Koblischka, M. R., Winer, M., Hartman, U. (2007). Nanostripe structures in SmBa2Cu3Ox superconductors. Superconduct. Sci. Technol., 20 (7), 681-686.10.1088/0953-2048/20/7/016
Search in Google Scholar
Hu, A., Koblischka, M. R., Yao, X., Zhou, H., Winter, M., Hartmann, U., Murakami, M. (2006). Recent progress on compositional nanostripes of REBa2Cu3O7-δ (RE = Sm, Eu, Gd) superconductors. Superconduct. Sci. Technol., 19 (7), S580-S584.10.1088/0953-2048/19/7/S31
Search in Google Scholar
Koblischka, M. R., Winter, M., Das, P., Koblischka-Veneva, A., Muralidhar, M., Wolf, T., Babu, N. H., Turner, S., Tendeloo, G., Hartmann, U. (2009). Observation of nanostripes and -clusters in (Nd, EuGd)Ba2Cu3Ox superconductors. Physica C, 469 (4), 168-176.10.1016/j.physc.2009.01.007
Search in Google Scholar
Oh, S. S., Ha, H. S., Kim, H. S., Ko, R. K., Song, K. J., Ha, D. W., Kim, T. H., Lee, N. J., Youm, D., Yang, J. S., Kim, H. K., Yu, K. K., Moon, S. H., Ko, K. P., Yoo, S. I. (2008). Development of long-length SmBCO coated conductors using a batch-type reactive co-evaporation method. Superconduct. Sci. Technol., 21 (3), 034003-1-6.10.1088/0953-2048/21/3/034003
Search in Google Scholar
Wang, H., Serquis, A., Maiorov, B., Civale, L., Jia, Q. X., Arendt, P. N., Foltyn, S. R., MacManus-Driscoll, J. L., Zhang, X. (2006). Microstructure and transport properties of Y-rich YBa2Cu3O7-δ thin films. J. Appl. Phys., 100 (5), 053904-1-4.10.1063/1.2337262
Search in Google Scholar
Holesinger, T. G., Civale, L., Maiorov, B., Feldmann, D. M., Coulter, J. Y., Miller, D. J., Maroni, V. A., Chen, Z., Larbalestier, D. C., Feenstra, R., Li, X., Huang, Y., Kodenkandath, T., Zhang, W., Rupich, M. W., Malozemoff, A. P. (2008). Progress in nanoengineered microstructures for tunable high-current, high-temperature superconducting wires. Advan. Mater., 20 (3), 391-407.10.1002/adma.200700919
Search in Google Scholar
Mele, P., Matsumoto, K., Horide, T., Ichinose, A., Mukaida, M., Yoshida, Y., Horii, S. (2007). Insertion of nanoparticulate artificial pinning centres in YBa2Cu3O7-x films by laser ablation of a Y2O3-surface modified target. Superconduct. Sci. Technol., 20 (7), 616-620.10.1088/0953-2048/20/7/006
Search in Google Scholar
Plackowski, T., Sulkowski, C., Bukowski, Z., Wlosewicz, D., Rogacki, K. (1995). Electronic structure parameters of Sm1+xBa2-xCu3Oy solid solution of orthorhombic and tetragonal structure. Physica C, 254 (3-4), 331-341.10.1016/0921-4534(95)00560-9
Search in Google Scholar
Kameneva, M. Y., Kozeeva, L. P., Blinov, A. G., Kuratieva, N. V., Fedorov, V. E. (2009). Preparation of polycrystalline samples of solid solutions Sm1+xBa2-xCu3O6+y (x=0.0-0.7) and a study of their structural and superconducting properties. J. Ceram. Proc. Res., 10 (1), 61-65.
Search in Google Scholar
Cigáň, A., Maňka, J., Polovková, J., Majerová, M., Kopčok, M., Van Driessche, I., Zrubec, V. (2008). Study of light nonstoichiometry in Eu-Ba-Cu-O systems. J. Phys. Conf. Ser., 97, art. no. 012184.10.1088/1742-6596/97/1/012184
Search in Google Scholar
Vermeir, P., Cardinael, I., Schaubroeck, J., Verbeken, K., Bäcker, M., Petra Lommens, P., Knaepen, W., D'haen, J., De Buysser, K., Van Driessche, I. (2010). Elucidation of the mechanism in fluorine-free prepared YBa2Cu3O7-δ coatings. Inorg. Chem., 49 (10), 4471-4477.10.1021/ic9021799
Search in Google Scholar
Zrubec, V., Cigáň, A., Maňka, J. (1994). Simplified fast method for magnetic characteristics measurement of the HTc superconducting materials. Physica C, 223 (1-2), 90-94.10.1016/0921-4534(94)90699-8
Search in Google Scholar
Chen, J. M., Liu, R. S., Lee, J. M., Lu, K. T., Yang, T. J., Kramer, M. J., McCallum, R. W. (2006). High-resolution XANES study of Eu(Ba1-xRx)2Cu3O7+δ (R = Eu, Pr). New J. Phys., 8 (9), 215-1-9.10.1088/1367-2630/8/9/215
Search in Google Scholar
Kramer, M. J., Yoo, S. I., McCallum, R. W., Yelon, W. B., Xie, H., Allenspach, P. (1994). Hole filling, charge transfer and superconductivity in Nd1+xBa2-xCu3O7+δ. Physica C, 219 (1-2), 145-155.10.1016/0921-4534(94)90027-2
Search in Google Scholar
Chen, J. M., Liu, R. G., Chung, S. C., Liu, R. S., Kramer, M. J., Dennis, K. W., McCallum, R. W. (1997). Soft x-ray absorption spectroscopy of Nd1+xBa2-xCu3O7+δ (x=0-0.6). Phys. Rev. B, 55 (5), 3186-3191.10.1103/PhysRevB.55.3186
Search in Google Scholar
Tallon, J. T. (2005). Oxygen in high-Tc cuprate superconductors. In Narlikar, A. V. (ed.) Frontiers in Superconducting Materials. Springer-Verlag, 295-328.10.1007/3-540-27294-1_7
Search in Google Scholar
Andersen, N. H., Zimmermann, M., Frello, T., Käll, M., Monster, D., Lindgard, P. A., Madsen, J., Niemöller, T., Poulsen, H. F., Schmidt, O., Schneider, J. R., Wolf, T., Dosanjh, P., Liang, R., Hardy, W. N. (1999). Superstructure formation and the structural phase diagram of YBa2Cu3O6+x. Physica C, 317-318 (1), 259-269.10.1016/S0921-4534(99)00066-0
Search in Google Scholar
Scavini, M., Daldosso, D., Cappelli, S., Oliva, C., Brunelli, M., Ferrero, C., Lascialfari, A. (2006). Unravelling the role of Cu-O chain length on the superconducting properties of SmBa2Cu3O6+δ via Al doping and clustering. Europhys. Lett., 76 (3), 443-449.10.1209/epl/i2006-10300-9
Search in Google Scholar
Sudoh, K., Yoshida, Y., Takai, Y. (2004). Effect of deposition conditions and solid solution on the Sm1+xBa2-xCu3O6+δ thin films prepared by pulsed laser deposition. Physica C, 384 (1-2), 178-184.
Search in Google Scholar
Miyachi, K., Sudoh, K., Ichino, Y., Yoshida, Y., Takai, Y. (2003). The effect of the substitution of Gd for Ba site on Gd1+xBa2-xCu3O6+δ thin films. Physica C, 392-396 (Part 1), 1261-1264.10.1016/S0921-4534(03)01018-9
Search in Google Scholar

Effects of Slight Non-Stoichiometry in Sm-Ba-Cu-O Systems on Superconducting Characteristics

Abstract

Paradigm

My account