Directional Bridgman methods

Crystals are grown by Bridgman method using PbO as a flux. As-grown crystals are available in size of several cm in certain crystallographic directions (Shimanuki 1998). 

Single crystals were grown from the melt by the horizontal Bridgman method In sealed cylindrical Ta crucibles [3]. The method of directional crystallization from the melt in a sealed Ta crucible was used by Adamyan et al. [6], the crucible was lowered through a high-frequency inductance furnace. 

Fig. 1.4 An anthracene single crystal made by the Bridgman crystal-growth method, then cleaved and polished. The length of the crystal is about 2 cm and its thickness 1 cm. Along the direction of sight in this photograph, the c direction, the strong double refraction is apparent. Image provided by N. Karl [1]. Cf the coloured plates in the Appendix.

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