Abstract
The oxide system Bi2.2Ca2.8−x Sr x Cu2O y has been investigated for superconductivity as a function of Ca/Sr ratio withx=0.7, 1.0, 1.4 and 1.8. All these compositions are found to be superconducting with onset temperature in the range of 80–90 K implying a large homogeneity range between Sr and Ca for the superconductivity to occur in this system. Effect of partial replacement of Bi by rare earths has been studied and it is observed that 20% replacement of Bi by Nd and Eu does not significantly affect the superconducting transition temperature.
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Bednorz J Z and Muller K A 1986Z. Phys. B64 189
Chu C W, Bechtold J, Gao L, Hor P H, Huang Z J, Meng R L, Sun Y Y, Wang Y Q and Xue Y Y 1988Phys. Rev. Lett. 60 941
Dunlap B D, Slaski M, Hinks D G, Soderholm L, Beno M, Zhang K, Segre C, Crabtree G W, Kwok W K, Malik S K, Schuller I K, Jorgensen J D and Sungaila Z 1987J. Magn. Magn. Mater. 68 L139
Hazen R M, Prewitt C T, Angel R J, Ross N L, Finger L W, Hadidiacos C G, Veblen D R, Heaney P J, Hor P H, Meng R L, Sun Y Y, Wang Y Q, Xue Y Y, Huang Z J, Gao L, Bechtold J and Chu C W 1988Phys. Rev. Lett. (submitted)
Hor P H, Meng R L, Wang Y Q, Gao L, Huang Z J, Bechtold J, Forester K and Chu C W 1987Phys. Rev. Lett. 58 1891
Maeda H, Tanaka Y, Fukutomi M and Asano T 1988Jpn. J. Appl. Phys. 27 L209
Meng R L, Hor P H, Sun Y Y, Huang Z J, Gao L, Xue Y Y, Wang Y Q, Bechtold J, Chu C W, Hazen R M, Prewitt C T, Angel R J and Ross N L 1988Phys. Rev. Lett. (submitted)
Michel C, Hervieu M, Borel M M, Grandin A, Deslandes F, Provost J and Raveau B 1987Z. Phys. B68 421
Muromachi E J, Uchida Y, Ono A, Izumi F, Onoda M, Matsui Y, Kosuda K, Takekawa S and Kato K 1988 (to be published)
Murphy D W, Sunshine S, van Dover R B, Cava R J, Batlogg B, Zahurak S M and Schneemeyer L F 1987Phys. Rev. Lett. 58 1888
Nagarajanet al 1988 (unpublished)
Rao C N R, Ganguly P, Raychaudhuri A K, Mohan Ram R A and Sreedhar K 1987Nature (London) 326 856
Shaw T M, Shivashankar S A, La Placa S J, Cuomo J J, McGuire T R, Roy R A, Kelleher K H and Yee D S 1988 (submitted)
Togano K, Kumakura H, Maeda H, Takahashi K and Nakao M 1988 (submitted)
Tomy C V, Malik S K, Prasad R, Soni N C 1988Pramana—J. Phys. 30
Wu M K, Ashburn J R, Torng C J, Hor P M, Meng R L, Gao L, Huang Z J, Wang Y Q and Chu C W 1987Phys. Rev. Lett. 58 908
Zhang J P, Shibahara H, Li D J, Marks L D, Wiley J B, Hwu S-J, Poeppelmeier K R, Song S N, Ketterson J B and Wood B 1988 (submitted)
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Prasad, R., Soni, N.C., Gulnar, A. et al. Superconductivity in Bi2.2Ca2.8−x Sr x Cu2O y system and effect of rare earth substitution. Pramana - J. Phys. 30, L477–L481 (1988). https://doi.org/10.1007/BF02935606
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DOI: https://doi.org/10.1007/BF02935606