Superconducting FeSe1-xTex Single Crystals Grown by Optical Zone-Melting Technique

Details Superconducting FeSe1-xTex Single Crystals Grown by Optical Zone-Melting Technique Superconducting FeSe1-xTex Single Crystals Grown by Optical Zone-Melting Technique

2009-08-20

arxiv.org/abs/0908.2855v1

Cryst. Growth Des. 9 (11), 4847 (2009)

Physics

Condensed Matter

Superconductivity

To appear in Crystal Growth and Design

Scientific paper

A new approach to grow FeSe1-xTex single crystals with optical zone-melting technique was successfully employed. Crystals with actual composition 0.4 < x < 1.0 all show high crystallinity with no phase separation. The ability to visually observe the locally heated melt, and ease of use and control of the image furnace make this method a promising and time-efficient way for obtaining high-quality FeSe1-xTex crystals. Our results indicate that with adequate heat treatment, the non-uniform distribution of Se and Te atoms in crystal lattice can be effectively eliminated, while the transition width of superconductivity can be reduced to about 2 K, which suggest the crystals are homogeneous in nature.

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