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Growth of Cu-Free Phases in Bi(2212)

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Advances in Cryogenic Engineering Materials

Part of the book series: An International Cryogenic Materials Conference Publication ((ACRE,volume 40))

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Abstract

The solidification of Bi2Sr2CaCu2O8+δ has been studied using high temperature x-ray diffraction in order to determine the relative amounts of Cu-free phase and alkaline earth cuprates that form during melting and freezing in a N2 atmosphere. On melting, three peaks associated with Bi2(Sr,Ca)4O7 are observed in the vicinity of 870°C and disappear at 890°C. Only (Ca,Sr)O is observed in equilibrium with the melt at 890°C. On freezing, this Bi2(Sr,Ca)4O7 grows out of the liquid at 830°C and then disappears again below 820°C. At 820°C, Bi2(Sr,Ca)3O6 begins to grow, and below 780°C, Bi2Sr2CaCu2O8+δ begins to grow.

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References

  1. E. Hellstrom, Materials Center, University of Wiscosin, Madison (private communications) (1993).

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  2. J. Polonka, Ming Xu, A. I. Goldman, D. K Finnemore, Appl. Phys. Lett. 59: 3640 (1991).

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  3. J. Polonka, Ming Xu, A. I. Goldman, and D. K. Finnemore, J. Appl. Phys., Effects of oxygen on the melting and freezing of Bi 2 Sr 2 CaCu 2 O 8+δ , (to be published) (1993).

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Author information

Authors and Affiliations

  1. Department of Chemistry, Iowa State University, Ames, IA, 50011, USA

    J. Polonka

  2. Department of Physics and Astronomy, Iowa State University, Ames, IA, 50011, USA

    A. I. Goldman & D. K. Finnemore

  3. Ames Laboratory, U. S. Department of Energy, Iowa State University, Ames, IA, 50011, USA

    Ming Xu & J. E. Ostenson

Authors
  1. J. Polonka
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  2. Ming Xu
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  3. J. E. Ostenson
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  4. A. I. Goldman
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  5. D. K. Finnemore
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Editor information

Editors and Affiliations

  1. Cryogenic Materials, Inc., Boulder, Colorado, USA

    Richard P. Reed

  2. U.S. Department of Commerce, National Institute of Standards and Technology, Boulder, Colorado, USA

    Fred R. Fickett

  3. National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida, USA

    Leonard T. Summers

  4. MS Publications, Boulder, Colorado, USA

    M. Stieg

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© 1994 Springer Science+Business Media New York

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Polonka, J., Xu, M., Ostenson, J.E., Goldman, A.I., Finnemore, D.K. (1994). Growth of Cu-Free Phases in Bi(2212). In: Reed, R.P., Fickett, F.R., Summers, L.T., Stieg, M. (eds) Advances in Cryogenic Engineering Materials . An International Cryogenic Materials Conference Publication, vol 40. Springer, Boston, MA. https://doi.org/10.1007/978-1-4757-9053-5_6

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  • DOI: https://doi.org/10.1007/978-1-4757-9053-5_6

  • Publisher Name: Springer, Boston, MA

  • Print ISBN: 978-1-4757-9055-9

  • Online ISBN: 978-1-4757-9053-5

  • eBook Packages: Springer Book Archive

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