Abstract
Samples of Y1-xCaxBa2Cu4O8 are prepared by means of a new high pressure technique employing the oxygen-HIP. We find that the transition temperature increases with Ca content, and that Tc=90K is realized at x=0.1. These data are explained by the hole concentration, i.e. average charge per [Cu-O] site.
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References
Y.Tokura, J.B.Torrance, T.C.Huang and A.I.Nazzal, Phys.Rev. B38, 7156(1988).
A.F.Marshall, R.W.Barton, K.Char, A.Kapitulnik, B.Oh, R.H.Hammond and S.S.Laderman, Phys.Rev. B37, 9353(1988).
J.Karpinskl, E.Kaldls, E.Jilek, S.Rusiecki and B.Bucher, Nature 336, 660(1988).
D.E.Morris, J.H.Nickel, J.Y.T.Wei, N.G.Asmer, J.S.Scott, U.M.Scheven, C.T.Hultgren, A.G.Markelz, J.E.Post, P.J.Heaney, D.R.Veblen and R.M.Hazen, Phys.Rev. B39, 7347(1989).
R.J.Cava, J.J.Karajewski, W.F.Peck Jr, B.Batlogg, L.W.Rupp Jr, R.M.Fleming, A.C.W.P. James and P.Marsh, Nature 338, 328(1989).
R.Itti, (private communication).
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Miyatake, T., Yamaguchi, K., Takata, T. et al. Preparation and Transition Temperature of Ca-Substituted Yba2Cu4O8 . MRS Online Proceedings Library 169, 241–244 (1989). https://doi.org/10.1557/PROC-169-241
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DOI: https://doi.org/10.1557/PROC-169-241