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Ten Minute Preparation Of Yba2Cu3O7−x Using Barium Hydroxide

  • N. Coppa (a1), A. Kebede (a1), J. W. Schwegler (a1), I. Perez (a1), R. E. Salomon (a1), G. H. Myer (a1) and J. E. Crow (a2)...


High quality bulk YBa2CuOx−7 was synthesized by fusing stoichiometric amounts of yttrium and copper nitrates and barium hydroxide, in air, using an ordinary Bunsen burner. The starting materials go through a short-lived liquid phase yielding a solid black product which was subsequently heat treated, (900 C, 18–24 h, in air, followed by 500 C, 5 h., in O2). These materials were greater than 99% phase pure with CuO as the only other phase and they exhibited a transition temperature of 92 K, a 15.5% perfect diamagnetic response (field cooled), 76% (zero field cooled). This synthesis represents an improvement over the much more labor and time intensive conventional methods in that it allows high quality materials of various compositions to be prepared quickly



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1. Coppa, N., Nichols, D., Schwegler, J., Salomon, R. E., Myer, G. H., Crow, J. E., J. Mat. Res., 4, 1307 (1989).
2. Ham, W. K., Holland, G. F., Stacey, A. M., J. Am. Chem. Soc., 110, 5214 (1988).
3. Coppa, N., doctoral dissertation, Temple University, Philadelphia PA, (1990).
4. Wallace, J. S., in Ceramic Superconductors, II, edited by Yan, M. F., (Am. Cer. Soc., Waterville, 1988), pp 243251.
5. Weast, R. C., CRC Handbook of Chemistry and Physics, 66th ed., (CRC, Cleveland, OH 1985) p B76.
6. Rossini, F. D., Wagman, D. D., Evans, W. H., Levine, S., Jaffe, I., Natl. Bur. Std. (U. S. A.), Cir. 500, (1952).
7. Rao, C. N. R. and Gopalakrishnan, J., New Directions in Solid State Chemistry, Cambridge, Chapter 3, (1989).
8. Chen, I. W., Keating, S, Keating, C. Y., Wu, X., Xu, J., Reyes-Morel, P. E. and Tein, T. Y., Adv. Ceram. Mater. 2[3B], 457, (1980).
9. Tarascon, J. M., Green, L. H., Bagley, B. G., McKinnon, W. R., Barboux, P. and Hull, G. W., in Novel Superconductivity, edited by Wolf, S. A. and Kresin, V. Z., (Plenum Press, New York, 1987), pp 705724.
10. Coppa, N.,Bura, A., Schwegler, J. W., Salomon, R. E., Myer, G. H. and Crow, J. E., this publication.
11. See for example, Maple, M. B., DeLong, L. E., Sales, B. C., in Handbook on the Physics and Chemistry of the Rare Earths, edited by Gschneidnen, K. A., Eyring, L., (North-Holland, Amsterdam, 1978), Vol 1, p 797.
12. Appleman, D. E., Evans, H. T. Jr, U. S. Geological Survey Computer Contribution 20, U. S. National Technical Information Service Document PB2–16188, (1973).
13. Reynolds, R. C., in Modern Powder Diffraction, Reviews in Mineralology, Bish, D. L.,, Post, J. E., (Mineralogical Soc. Amer., Washington D. C., 1989), Vol 20, p 145.
14. For example see, Sakka, S., MRS Int'l. Mtg. Adv. Mats., 6, 221 (1989).
15. Wong-Ng, W., McMurdie, H. F., Paretzkin, B., Hubbard, C. R., Dragoo, A. L., Stewart, J. M., Powder Diffract., 2, 106 (1987).
16. Wu, M. K., Ashburn, J. R., Torng, C. J., Hor, P. H., Meng, R. L., Gao, L., Haung, Z. J., Wang, Y. Q., Chu, C. C., Phys. Rev. Lett., 58, 908 (1987).

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Ten Minute Preparation Of Yba2Cu3O7−x Using Barium Hydroxide

  • N. Coppa (a1), A. Kebede (a1), J. W. Schwegler (a1), I. Perez (a1), R. E. Salomon (a1), G. H. Myer (a1) and J. E. Crow (a2)...


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