Composition distribution in the Mn_xCd_1-xIn₂Te₄ ingot grown by ACRT-B method

Mn_xCd_1-xIn₂Te₄ (x=0.1) ingot was successfully grown by the modified Bridgman technique, which applied the accelerated crucible rotation technique (ACRT) in Bridgman process or briefly ACRT-B. The growth interface profile shape and the composition distribution in the Mn_xCd_1-xIn₂Te₄ (x=0.1) ingot were analyzed. Even though the stoichiometric composition was synthesized in the original ingot, the composition has been redistributed during the ACRT-B growth process. The Mn and Cd contents decrease while the In content increases along the longitudinal axis. The partition ratios of solutes Mn, Cd and In at the growth interface are evaluated by a mathematical method based on the experimental data, which are found to be 1.286, 1.926 and 0.729 in the α phase growth process and 1.120, 1.055 and 0.985 in the β phase growth process, respectively. In the radial direction, the Mn and Cd contents increase while the In content decreases with the increase of the distance from the centerline of the ingot.