Single-crystal growth of the ternary BaFe$_2$As$_2$ phase using the vertical Bridgman technique

Ternary Ba-Fe-As system has been studied to determine a primary solidification field of the BaFe $_{2}$ As $_{2}$ phase. We found that the BaFe $_{2}$ As $_{2}$ phase most likely melts congruently and primarily solidifies either in the FeAs excess or Ba $_{x}$ As $_{100 - x}$ excess liquid. Knowing the primary solidification field, we have performed the vertical Bridgman growth using the starting liquid composition of Ba $_{15}$ Fe $_{42.5}$ As $_{42.5}$ . Large single crystals of the typical size 10x4x2 mm $^{3}$ were obtained and their quality was confirmed by X-ray Laue and neutron diffraction.

Single-crystal growth of the ternary BaFe $_{2}$ As $_{2}$ phase using the vertical Bridgman technique

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Single-crystal growth of the ternary BaFe $_{2}$ As $_{2}$ phase using the vertical Bridgman technique

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Single-crystal growth of the ternary BaFe22​As22​ phase using the vertical Bridgman technique

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Single-crystal growth of the ternary BaFe22​As22​ phase using the vertical Bridgman technique

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Single-crystal growth of the ternary BaFe $_{2}$ As $_{2}$ phase using the vertical Bridgman technique

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Single-crystal growth of the ternary BaFe $_{2}$ As $_{2}$ phase using the vertical Bridgman technique

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AI智能校验