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arXiv · 0805.4633

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
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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.

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J. S. Wen, Z. J. Xu, G. Y. Xu, M. Hücker, J. M. Tranquada, G. D. Gu. 2008-05-29. Large Bi-2212 single crystal growth by the floating-zone technique. https://doi.org/10.1016/j.jcrysgro.2007.09.028

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