Artículos de revistas
Multilevel Granular Structure And Its Coupling Distribution In Melt-textured Yba2cu3o7-δ
Registro en:
Physica C: Superconductivity And Its Applications. , v. 311, n. 1-2, p. 98 - 106, 1999.
9214534
2-s2.0-0002264159
Autor
Araujo-Moreira F.M.
Ortiz W.A.
De Lima O.F.
Institución
Resumen
We have performed AC magnetic susceptibility measurements as a function of the excitation magnetic field, h, for two YBa2Cu3O7-δ polycrystalline samples using a high-sensitivity home-made susceptometer, for fixed values of the temperature, T, and the external DC magnetic field, H. One of the samples is melt-textured and for H < 52.5 Oe it presents features that can be associated with a multilevel granular structure. Using an effective medium model, we have determined the critical current density distribution associated with the multilevel granular structure. The average critical current density in each intergranular region was then calculated by applying Bean's critical state model. © 1999 Elsevier Science B.V. All rights reserved. 311 1-2 98 106 Clem, J.R., (1988) Physica C, 153-155, p. 50 Tinkham, M., Lobb, C.J., (1991) Solid State Physics, 42-91. , H. Ehrenr, F. Seitz, D. Turnbull (Eds.), Academic Press, New York Müller, K.H., (1989) Physica C, 159, p. 717 Dersch, H., Blatter, G., (1988) Phys. Rev. B, 38, p. 11391 Ferdeghini, C., Giannini, E., Grassano, G., Marré, D., Pallecchi, I., Siri, A.S., (1998) Physica C, 294, p. 233 Widder, W., Bauernfeind, L., Braun, H.F., Burkhardt, H., Rainer, D., Bauer, M., Kinder, H., (1997) Phys. Rev. B, 55, p. 1254 Kim, G.C., Kim, Y.C., (1997) Physica C, 279, p. 122 Cherkasov, A.N., Volkova, L.P., (1996) Low Temp. Phys., 22, p. 996 Jin, S., Tiefel, T.H., Sherwood, R.C., Davis, M.E., Van Dover, R.V., Kammlott, G.W., Fastnacht, R.A., Keith, H.D., (1988) Appl. Phys. Lett., 52, p. 2074 Murakami, M., Morita, M., Doi, K., Miyamoto, K., (1989) Jpn. J. Appl. Phys., 28, p. 1189 Salama, K., Selvamanickam, V., Gao, L., Sun, K., (1989) Appl. Phys. Lett., 54, p. 2352 Ren, H.T., He, Q., Xiao, L., Wang, R.K., Yu, D.A., (1990) Cryogenics, 30, p. 837 McGinn, P.J., Chen, W., Zhu, N., Balachandran, U., Lanagan, M.T., (1990) Physica C, 165, p. 480 Murakami, M., Morita, M., Doi, K., Miyamoto, K., Hamada, H., (1989) Jpn. J. Appl. Phys., 28, pp. L399 Ulrich, M., Muller, D., Heinemann, K., Niel, L., Freyhardt, H.C., (1992) Physica C, 198, p. 181 Ulrich, M., Muller, D., Heinemann, K., Niel, L., Freyhardt, H.C., (1993) IEEE Trans. Appl. Supercond., 3, p. 1386 Blatter, G., Feigelman, M.V., Geshkenbein, V.B., Larkin, A.I., Vinokur, V.M., (1994) Rev. Mod. Phys., 66, p. 1125 Crabtree, G.W., Liu, J.Z., Umwzawa, A., Kwok, W.K., Sowers, C.H., Malik, S.K., Veal, B.W., Downey, J.W., (1987) Phys. Rev. B, 36, p. 4021 Zhukov, A.A., Gladyshev, I.V., Gordeev, S.N., Murashov, V.A., (1991) Supercond. Phys. Chem. Technol., 4, p. 1268 Dorosinskii, L.A., Nikitenko, V.I., Polyanskii, A.A., Vlasko-Vlasov, V.K., (1994) Physica C, 219, p. 81 Swartzendruber, L.J., Roitburd, A., Kaiser, D.L., Gayle, F.W., Bennet, L.H., (1990) Phys. Rev. Lett., 64, p. 483 Turchinkaya, M., Kaiser, D.L., Gayle, F.W., Shapiro, A.J., Roitburd, A.L., Poilyanskii, A.A., Vlasko-Vlasov, V.V., Nikitenko, V.I., (1993) Physica C, 216, p. 205 Chen, D.X., Nogues, J., Rao, K.V., (1989) Cryogenics, 29, p. 800 Müller, K.H., (1990) Physica C, 168, p. 585 Müller, K.H., (1989) Physica C, 159, p. 717 Choy, T.C., Stoneham, A.M., (1990) J. Phys. Condens. Mat., 2, p. 939 Schilling, O.F., Aiihara, K., Soeta, A., Kamo, T., Matsuda, S., (1993) Phys. Rev. B, 47, p. 8096 Bean, C.P., (1964) Rev. Mod. Phys., 36, p. 31 Araujo-Moreira, F.M., Ortiz, W.A., De Lima, O.F., (1994) Physica C, 235-240, p. 3205 Araujo-Moreira, F.M., Ortiz, W.A., De Lima, O.F., (1996) J. Appl. Phys., 80, p. 3390 Hein, R.A., Francavilla, T.L., Liebenberg, D.H., (1992) Magnetic Susceptibility of Superconductors and Other Spin Systems, , Plenum, New York Araújo-Moreira, P.M., Barbara, P., Cawthorne, A.B., Lobb, C.J., (1997) Phys. Rev. Lett., 78, p. 4625 Gelfuso, V., Ortiz, W.A., unpublishedSenoussi, S., (1992) J. Phys. III France, 2, p. 1041 Chen, D.X., Sanchez, A., (1991) J. Appl. Phys., 70, p. 5463