The preparation of high Tc superconductors from nitrates
作者： M.L. Kaplan , J.J. Hauser
DOI: 10.1016/0025-5408(88)90106-7
关键词: Copper 、 Electrical resistivity and conductivity 、 Ceramic 、 Alkaline earth metal 、 Superconductivity 、 Transition metal 、 Inorganic chemistry 、 Thin film 、 Materials science 、 Yttrium
摘要: The preparation of high T/sub c/ superconductors, in most cases, proceeds by ceramic methodology from the metal oxides and carbonates. In this paper authors show that same materials can easily be derived, as well, nitrates. Nitrates are a potentially useful class starting because their solubility thus possible use technologies require deposition thin films precursors to superconductors. When appropriate mixture nitrate salts is prepared ground together, then fired, first air, pure oxygen, superconducting material results. Both La/sub 1.85/Sr/sub 0.15/CuO/sub 4/ Ba/sub 2/YCu/sub 3/O/sub 7/ have been way. Their authenticities confirmed comparison x-ray powder patterns resistivity properties with those published for known materials. addition demonstrated solutions analyzed purity simple spectroscopic method.
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sci-hub.se 参考文章(20)
Y. LePage, W. R. McKinnon, J. M. Tarascon, L. H. Greene, G. W. Hull, and D. M. Hwang, Room-temperature structure of the 90-K bulk superconductor YBa2Cu3O8-x. Physical Review B. ,vol. 35, pp. 7245- 7248 ,(1987) , 10.1103/PHYSREVB.35.7245
W. John Williams, Handbook of anion determination ,(1979)
J. G. Bednorz, K. A. M�ller, Possible high Tc superconductivity in the Ba-La-Cu-O system European Physical Journal B. ,vol. 64, pp. 189- 193 ,(1986) , 10.1007/BF01303701
Angelica M. Stacy, John V. Badding, Margret J. Geselbracht, William K. Ham, Gary F. Holland, Renata L. Hoskins, Steven W. Keller, Clark F. Millikan, Hans Conrad Zur Loye, High Temperature Superconductivity in Y-Ba-Cu-O: Identification of a Copper-rich Superconducting Phase Journal of the American Chemical Society. ,vol. 109, pp. 2528- 2530 ,(1987) , 10.1021/JA00242A056
Clément Duval, Inorganic Thermogravimetric Analysis ,(1963)
R. J. Cava, R. B. van Dover, B. Batlogg, E. A. Rietman, Bulk superconductivity at 36 K inLa1.8Sr0.2CuO4 Physical Review Letters. ,vol. 58, pp. 408- 410 ,(1987) , 10.1103/PHYSREVLETT.58.408
C. W. Chu, P. H. Hor, R. L. Meng, L. Gao, Z. J. Huang, and Y. Q. Wang, Evidence for superconductivity above 40 K in the La-Ba-Cu-O compound system Physical Review Letters. ,vol. 58, pp. 405- 407 ,(1987) , 10.1103/PHYSREVLETT.58.405
J. R. Gavaler, Superconductivity in Nb–Ge films above 22 K Applied Physics Letters. ,vol. 23, pp. 480- 482 ,(1973) , 10.1063/1.1654966
Wesley W. Wendlandt, The thermolysis of the rare earth and other metal nitrates Analytica Chimica Acta. ,vol. 15, pp. 435- 439 ,(1956) , 10.1016/0003-2670(56)80082-2
R. J. Cava, B. Batlogg, R. B. van Dover, D. W. Murphy, S. Sunshine, T. Siegrist, J. P. Remeika, E. A. Rietman, S. Zahurak, G. P. Espinosa, Bulk superconductivity at 91 K in single-phase oxygen-deficient perovskite Ba 2 YCu 3 O 9 − δ Physical Review Letters. ,vol. 58, pp. 1676- 1679 ,(1987) , 10.1103/PHYSREVLETT.58.1676