Single Crystal Growth and Structural Characterization of ${\rm FeTe}_{1-x}{\rm S}_{x}$

We have synthesized single crystals of FeTe
_1-
x
S
x
and investigated the structural and physical properties. The actual S concentration was found to be significantly smaller than the starting nominal value. The solubility limit of S for the Te site for the crystals grown using a self-flux method was estimated to be around 12%. Although a suppression of antiferromagnetic transition was observed by S substitution, bulk superconductivity was not observed. A phase diagram of as-grown FeTe
_1-
x
S
x
single crystal was established on the basis of the structural and physical properties.