Figure 14.

(a) Schematic diagram of apparatus setup of the optical zone-melting method. The red arrows represent the light path of the light source, and the black arrow represents the direction of single crystal growth. (b) Single crystal boule of as-grown FeTe_0.7Se_0.3 single crystal on a 1 mm grid. The shiny surface is the a–b plane. (c) The crystal flakes with the (001) face. Crystals from A–F represent FeSe_xTe_1−x single crystals of x = 0.3, 0.5, 0.6, 0.7, 0.9, and 1.0, respectively. Reprinted with permission from Ref. [96]. Copyright 2009, copyright the American Chemical Society.