通过对EuSr2RuCu2-xZnxO8超导体系的结构、电阻和磁化强度的观测,研究了Zn对Cu的部分替代对其超导电性和磁性的影响.结果表明,Zn部分替代Cu后EuSr2RuCu2-xZnxO8体系仍能保持单相的上限浓度为x=0.2;替代导致样品发生四方-正交的结构相变,并对其超导电性具有强烈的破坏作用,x=0.01的样品在4.2 K以上已不再呈现超导电性;替代增强了Ru离子之间的铁磁相互作用,导致铁磁相变温度的提高.
参考文献
| [1] | B.T.Matthias, H.Suhl, E.Corenzwit, Phys. Rev. Lett., 1, 92(1958) |
| [2] | Superconductivity in Ternary Compounds, edited by M.B.Maple, O.Fisher, (Springer-Verlag, Berlin, 1982),Vol.II |
| [3] | H.Eisaki, H.Takagi, R.J.Cava, B.Batlogg, J.J.Krajewski, W.F.Peck, Jr. K.Mizuhashi, J.O.Lee, S.Uchida,Phys. Rev. B, 50, 547(1994) |
| [4] | L.Bauernfeind, W.Widder and H.F.Braun, Physica C, 254, 163(1995) |
| [5] | M.Vybornov, W.Perthold, H.Micher, T.Holubar, G.Hilscher, P. Rogl, P. Fisher, Phys. Rev. B, 52, 1389 (1995) |
| [6] | I.Felner, U.Asaf, Y.Levi and O.Millo, Phys. Rev B, 55, R3347(1997) |
| [7] | J.L.Tallon, C.Bernhard, M.E.Bowden, P.W.Giber, T.M.Stoto, D.J.Pringle, IEEE Trans. Appl. Supercon.,9, 1051(1999) |
| [8] | C.Bernhard, J.L.Tallon, Ch. Niedermayer, Th. Blasius, A.Golnik, E.Brucher, R.K.Kremer, D.R.Noakes,C.E.Stronch, E.J.Ansaldo, Phys. Rev. B, 59, 14099(1999) |
| [9] | A.C.McLaughlin, W.Zhou, J.P.Attfield, A.N.Fitch, J.L.Tallon, Phys. Rev. B, 60, 7512(1999) |
| [10] | J.L.Tallon, J.W.Loram, G.V.M.Williamsm, C.Bernhard, Phys. Rev. B, 61, 6471(2000) |
| [11] | W.E.Pickett, P. Weht, A.B.Shick, Phys. Rev. Lett., 83, 3713(1999) |
| [12] | O.Chmaissem, J.D.Jorgensen, H.Shaked, P.Dollar, J.L.Tallon, Phys. Rev. B, 61, 6401 (2000) |
| [13] | J.E.McCrone, J.R.Cooper, J.L.Tallon, J.Low Temp. Phys., 117, 1199(1999) |
| [14] | A.Fainstein, E.Winkler, A.Butera, J.L.Tallon, Phys. Rev. B, 60, 12597(1999) |
| [15] | ZHANG Qirui(张其瑞), XU Zhuan(许祝安), WANG Jinsong(王劲松), TAN Mingqiu(谭明秋), FANG Minghu(方明虎), Element Substitution in High Tc Superconductor YBa2Cu3O7-δ, Science in China (中国科学), 23(4), 409(1993) |
| [16] | J.J.Bouchard, J.L.Gillson, Mater.Res. Bull., 7, 873(1972) |
| [17] | J.H.Van Vleck, The Theory of Electric and Magnetic Susceptibilities (Oxford University Press, London,1965), p.245ff |
| [18] | Minghu Fang, Kazuyoshi Yoshimura, Masaki Kato, Koji Kosuge, and Tsuneaki Goto, Phys. Rev. B(in Press), 2001 |
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