Artículos de revistas
Strong Dependence Of Superconducting Transition Temperature (t(c)) On The Rare Earth Ionic Size In Rebasrcu3o7 (re = Y, Dy, Nd And La) Series
Registro en:
Modern Physics Letters B. , v. 14, n. 10, p. 361 - 372, 2000.
2179849
2-s2.0-0034732578
Autor
Awana V.P.S.
Malik S.K.
Cardoso C.A.
De Lima O.F.
Gupta A.
Sedky A.
Yelon W.B.
Prasad R.A.M.
Narlikar A.V.
Institución
Resumen
The REBaSrCu3O7 compounds with RE = Y, Dy, Nd and La have been synthesized by the standard solid-state reaction route. Superconducting transition temperatures (T(c)), as measured by ac susceptibility technique, are 81 K, 79 K, 62 K and 45 K for samples with RE = Y, Dy, Nd and La, respectively. The rare earth dependence of T(c) in the REBaSrCu3O7 series is quite different from that observed in the REBa2Cu3O7 (RE:123) series where T(c) is nearly independent of the choice of the RE (except when RE = Ce, Pr and Tb). Neutron diffraction studies have been carried out on the REBaSrCu3O7 compounds and structural details have been obtained from the Rietveld analysis of the room-temperature neutron diffraction data. The compounds with RE = Y, Dy are found to crystallize in the orthorhombic RE:123 structure (space group Pmmm) with orthorhombicity considerably smaller than that of the RE:123 compounds. In fact, the orthorhombicity reduces so much that the REBaSrCu3O7 compounds with light rare earths, RE = La and Nd, are tetragonal or almost tetragonal. 14 10 361 372 Oesterreicher, H., Smith, M., (1987) Mater. Res. Bull., 22, p. 1709 Soderholm, L., Zhang, K., Hinks, D.G., Beno, M.A., Jorgensen, J.D., Segre, C.U., Schuller, I.K., (1987) Nature, 328, p. 604 Herrmann, J., Boehnke, U.-C., Krotzsch, M., Lippold, B., (1994) Physica, 221 C, p. 76 Kebede, A., Jee, C.-S., Schwegler, J., Crow, J.E., Mihalisin, T., Myer, G.H., Salomon, R.E., Guertin, R.P., (1989) Phys. Rev., 40 B, p. 4453 Malik, S.K., Tomy, C.V., (1994), p. 283. , Physical and Material Properties of High Temperature Superconductors, eds. S. K. Malik and S. S. Shah (Nova Science, New York)Agarwal, S.K., Lal, R., Awana, V.P.S., Pandey, S.P., Narlikar, A.V., (1994) Phys. Rev., 50 B, p. 10265 Buckley, R.G., Tallon, J.L., Pooke, D.M., Presland, M.R., (1990) Physica, 165 C, p. 391 Xu, Y.H., Guan, W.Y., (1992) Phys. Rev., 45 B, p. 3176 Malik, S.K., Tomy, C.V., Bhargava, P., (1991) Phys. Rev., 44 B, p. 7042 Ata-Allah, S.S., Xu, Y.H., Heiden, Ch., (1994) Physica, 221 C, p. 39 Singh, R., Narlikar, A.V., Awana, V.P.S., Horvat, J., Dou, S.X., (1998) Physica, 301 C, p. 48 Fu, W.T., Zandbergen, H.W., Vander Beek, C.J., De Jongh, L.J., (1988) Physica, 156 C, p. 133 Peng, J.L., Klavins, P., Shelton, R.N., Radousky, H.B., Hahn, P.A., Bernardez, L., Costantino, M., (1989) Phys. Rev., 39 B, p. 9074 Awana, V.P.S., De Lima, O.F., Malik, S.K., Yelon, W.B., Narlikar, A.V., (1999) Physica, 314 C, p. 93 Mitros, C., Psycharis, V., Koufoudalis, A., Gamri-Seale, H., Niarchos, D., (1990) J. Less-Common Mat., 164-165, p. 892 Das, A., Suryanarayanan, R., (1995) J. Physique, 15, p. 623 Liang, J.M., Chang, L., Sung, H.M., Wu, P.T., Chen, L.J., (1988) J. Appl. Phys., 64, p. 3593 Awana, V.P.S., Malik, S.K., Yelon, W.B., (1996) Physica, 262 C, p. 272 Wang, X.Z., Hellerbrand, B., Bauerele, D., (1992) Physica, 200 C, p. 12 Badri, V., Varadaraju, U., Subba Rao, G.V., Physical and Material Properties of High Temperature Superconductors, eds. S. K. Malik and S. S. Shah (Nova Science, New York), to be publishedSuryanarayanan, R., Nafidi, A., Das, A., (1994) J. Appl. Phys., 76, p. 598 Zhang, H., Sato, H., (1993) Phys. Rev. Lett., 70, p. 1693 Awana, V.P.S., Narlikar, A.V., (1993) Phys. Rev. Lett., 71, p. 303 Goldshmidt, D., Direkovitch, Y., Knizhnik, A., Eckestein, Y., (1993) Phys. Rev. Lett., 71, p. 3392 Saked, H., Veal, B.W., Faber, J., Hitterman, R.L., Balachandran, U., Tomlins, G., Shi, H., Paulikas, A.P., (1990) Phys. Rev., 41 B, p. 4173 Lindemer, T.B., Chakoumakos, B.C., Specht, E.D., Williams, R.K., Chen, Y.J., (1994) Physica, 231 C, p. 80 Williams, G.V.M., Tallon, J.L., (1996) Physica, 258 C, p. 41 Henkie, Z., Cichorek, T., Drulis, H., Klamut, J., (1993) Physica, 214 C, p. 138 Hor, P.H., Meng, R.L., Wang, Y.Q., Gao, La., Huang, Z.J., Bechtold, J., Foster, K., Chu, C.W., (1987) Phys. Rev. Lett., 58, p. 1891 Kramer, M.J., Yoo, S.I., Callum, R.W., Yelon, W.B., Xie, H., Allenspach, P., (1994) Physica, 219 C, p. 145 Narlikar, A.V., Agarwal, S.K., Narsimha Rao, C.V., (1989), p. 343. , Studies of High Temperature Superconductors, ed. A. Narlikar (NOVA Science Pubs., New York)Morris, D.E., Nickel, J.H., Wei, J.Y.T., Asmar, N.G., Scott, J.S., Scheven, U.M., Hultgren, C.T., Hazen, R.M., (1989) Phys. Rev., 39 B, p. 7347 Chen, T.-M., Lai, Y.-L., Kao, F.S., (1997) Physica, 282-287 C, p. 789 Shannon, R.D., (1976) Acta Cryst., 32 A, p. 751 Tarascon, J.M., Bagley, B.G., (1993), p. 310. , Chemistry of High Temperature Superconductors, ed. T. A. Vanderah (NOYES Publishers, New York)Okai, B., (1990) Jpn. J. Appl. Phys., 129, pp. L2180