Study of Vickers' micro hardness on $InBi_{0.85}Sb_{0.15}$ single crystals

Abstract

$InBi_{0.85}Sb_{0.15}$ single crystals have been grown by zone-melting method. The growth velocity was 0.8 cm/h and the freezing interface temperature was 35 ◦C/cm. A Vickers’ projection microscope was used for the study of micro hardness of the crystals. Hardness tests were carried out on the as-cleaved, cold-worked and annealed surfaces of the crystals. The effect of perfection of crystals on micro hardness with respect to the cold-worked, as-cleaved and annealed crystals have been studied and the results are reported.