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The Crystal Structures of the Cubic and Tetragonal Phases of Y1Ba3Cu2O6.5 + δ and Y1Ba4Cu2O7.5 + δ

Published online by Cambridge University Press:  06 March 2019

M. A. Rodriguez ,
J. J. Simmins ,
P. H. McCluskey ,
R. S. Zhou  and
R. L. Snyder
M. A. Rodriguez
Affiliation:
Institute for Ceramic Superconductivity New York State College of Ceramics at, Alfred University Alfred, NY 14802-1296
J. J. Simmins
Affiliation:
Institute for Ceramic Superconductivity New York State College of Ceramics at, Alfred University Alfred, NY 14802-1296
P. H. McCluskey
Affiliation:
Institute for Ceramic Superconductivity New York State College of Ceramics at, Alfred University Alfred, NY 14802-1296
R. S. Zhou
Affiliation:
Institute for Ceramic Superconductivity New York State College of Ceramics at, Alfred University Alfred, NY 14802-1296
R. L. Snyder
Affiliation:
Institute for Ceramic Superconductivity New York State College of Ceramics at, Alfred University Alfred, NY 14802-1296
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Extract

The discovery of the superconducting material Y1Ba2Cu3O6+δ ( “123” material) resulted in a world wide interest in the pseudo-ternary system BaO·YO·CuO. A complete study of the phases present in this system was initiated to develop a better understanding and processing of the superconducting 123 material. The crystal structures were established for two of the three ternary compounds in this system immediately after the discovery of superconductivity. One such phase was a green insulating compound Y2Ba1Cu1O5 (”211”) which has the space group. The superconducting 123 compound was found to have the space group Pmmm and an ordered triple-celled perovskite structure.

Type
VIII. Applications of Digitized XRD Patterns
Information
Advances in X-Ray Analysis , Volume 32: Thirty-Seventh Annual Conference on Applications of X-ray Analysis, August 1-5, 1988 , 1988 , pp. 497 - 505
Copyright
Copyright © International Centre for Diffraction Data 1988

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References

[1] Chu, C.W., Hor, P.H., Meng, R.L., Gao, L., Huang, Z.J., Wang, Y.Q., Wu, M.K., Ashburn, J.R. and Torng, C.Y., “Superconductivity at 93K in a New Mixed Phase Y-Ba-Cu-0 Compound System at Ambient Pressure”, Phys. Rev. Lett., 58, 908-910, March 1987.Google Scholar
[2] Frase, K.C., Liniger, E.G., Clarke, D.R., “Phase Compatibilities in the System Y2O3-BaO-CuO at 950C”, J. Am. Ceram. Soc. , 70 [9| C204-C205 (1987).Google Scholar
[3] Robinson, A.L., “An Oxygen Key to the New Superconductors”, Science, 236 1063–1065 (1987).Google Scholar
[4] Michel, C. and Raveau, B., “Les Oxydes A2BaCuO5 (A = Y,Sm,Gd,Dy,Ho,Er,Yb)”, J. Sol. St. Chem. 43 73–80 (1982).Google Scholar
[5] Gallagher, W.J., Sandstrom, R.L., Dinger, T.R., Shaw, T.M. and Chance, D.A., “Identification and Preparation Of Single Phase 90K Oxide Superconductor and Structural Determination by Lattice Imaging”, Sol. St. Comm. , 63 [2], 147-150, July 1987.Google Scholar
[6] Beno, M.A., Soderholm, L., Capone, D.W., II, Hinks, D.G., Jorgensen, J.D., Grace, J.D., Schuller, Ivan K., Segre, C.U. and Zhang, K., “Structure Of The Single-Phase High-Temperature Superconductor YBa2Cu3O7-δ ” Appl. Phys. Lett. , 51 (1), 57-59 6 July 1987.Google Scholar
[7] Roth, R.S., Davis, K.L. and Dennis, J.R., “Phase Equilibria and Crystal Chemistry in the System Ba-Y-Cu-O”, Adv. Ceram. Mats, 2 , 303-312 (1987).Google Scholar
[8] Snyder, R.L.,“A Program to Apply Internal Standard Corrections”, New York State College of Ceramics (1984).Google Scholar
[9] Howard, S.A. and Snyder, R.L., “Shadow - A Program for X-ray Powder Diffraction Profile Analysis”, New York State College of Ceramics Report, 62 pages (1984).Google Scholar
[10] Wiles, D.B., Young, R.A., “A New Computer Program for Rietveld Analysis of X-Ray Powder Diffraction Patterns”, J. Appl. Cryst. 14 149–151 (1981).Google Scholar
[11] Johnson, C.K., “ORTEP” , ORNL-37S4, Oak Ridge National Laboratory (1965).Google Scholar
[12] Louer, D. and Louer, M., “Methods d'Essais et Erreurs pour l'Indexation Automatique des Diagrammes des Poudre”, J. Appl. Cryst. 5 271–275 (1972).Google Scholar
[13] Louer, D., and Vargas, R., “Indexation Automatique des Diagrammes de Poudre par Dichotomies Succesives”, J. Appl. Cryst. 15 542–545 (1982).Google Scholar
[14] Visser, J.W., “A Fully Automatic Program for Finding the Unit Cell from Powder Data”, J. Appl. Cryst, 2, 89–95 (1969).Google Scholar
[15] Taupin, D., “A Powder-Diagram Automatic-Indexing Routine” , J. Appl. Cryst, 6, 380–385 (1973).Google Scholar
[16] Goebel, J.B. and Wilson, A.S., “Index, A Computer Program for Indexing X-ray Diffraction Powder Patterns”, Atomic, U.S. Energy Commission R&D Report (Batelle-Northwest Report BNWL-22), (1965).Google Scholar
[17] Stalick, J.K. and Mighell, A.D., “Crystal Data” , NBS Technical Note 1229 (1986).Google Scholar
[18] International Centre for Diffraction Data - JCPDS distributors, 1601 Park Lane, Swarthmore, PA 19081.Google Scholar
[19] Himes, V.L. and Mighell, A.D., “NBS*Lattice: A Program to Analyze Lattice Relationships”, NBS Technical Note 1214 (1985).Google Scholar
[20] Harlow, R. and Johnson, G.G. Jr. , Programs distributed by the JCPDS[18].Google Scholar
[21] Hahn, T., “International Tables for Crystallography”, Vol A. , Reidel, D. Publishing Co. Dordrecht, Holland (1983).Google Scholar
[22] Smith, G.S. and Snyder, R.L., “FN: A Criterion for Rating Powder Diffraction Patterns and Evaluating the Reliability of Powder Pattern Indexing”, J. Appl. Cryst. 12 60–65 (1979).Google Scholar
[23] Howard, S.A. and Snyder, R. L., “Estimation of Particle Size and Strain using Direct Convolution Products in Profile and Pattern Fitting Algorithms”, J. Appl. Cryst. in press (1988).Google Scholar
[24] Snyder, R.L., “Micro-Index A Package of Powder Pattern Indexing Programs” , MDI Inc. PO Box 791, Livermore CA 94550.Google Scholar