Large Bi-2212 single crystal growth by the floating-zone technique

J. S. Wen; Z. J. Xu; G. Y. Xu; M. Hücker; J. M. Tranquada; G. D. Gu

doi:10.1016/j.jcrysgro.2007.09.028

Large Bi-2212 single crystal growth by the floating-zone technique

Materials Science 2008-06-02 v1 Superconductivity

Authors: J. S. Wen , Z. J. Xu , G. Y. Xu , M. Hücker , J. M. Tranquada , G. D. Gu

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Abstract

Effects of the growth velocity on the crystal growth behavior of Bi_2Sr_2Ca_1Cu_2O_x (Bi-2212) have been studied by floating zone technique. The results show that a necessary condition for obtaining large single crystals along the c-axis is that the solid-liquid interface of a growing rod maintains a stable planar growth front. The planar liquid-solid growth interface tends to break down into a cellular interface, while the growth velocity is higher than 0.25 mm/h. Single crystals of up to 50x7.2x7 mm3 along the a-, b- and caxes have been cut in a 7.2 mm diameter rod with optimum growth conditions. Tconset is 91 K measured by magnetic properties measurement system (MPMS) for as-grown crystals. Optical polarization microscope and neutron diffraction show that the quality of the single crystals is good.

Keywords

Bi-2212 single crystal floating zone technique crystal growth velocity solid-liquid interface planar growth front cellular interface Tconset neutron diffraction

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@article{arxiv.0805.4633,
  title  = {Large Bi-2212 single crystal growth by the floating-zone technique},
  author = {J. S. Wen and Z. J. Xu and G. Y. Xu and M. Hücker and J. M. Tranquada and G. D. Gu},
  journal= {arXiv preprint arXiv:0805.4633},
  year   = {2008}
}

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5 pages, 4 figures

Large Bi-2212 single crystal growth by the floating-zone technique

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