'Periodica Polytechnica Budapest University of Technology and Economics'
Abstract
The effect of gravity on dissolution of GaSb in InSb melt and growth of
InGaSb was experimentally investigated using GaSb(seed)/InSb/GaSb(feed)
sandwich samples. Two parameters were considered: (1) the inclination angle
of the sample for gravity as 0°, 53° and 90°, (2) the sample diameter (D) as 9 mm and 5mm. When θ
=0°, the interface was almost flat whereas the interfaces were strongly
distorted when θ = 53° and 90°. The undissolved GaSb(feed)
remained for \theta = 0 °. However, it dissolved completely for
θ
=
90°, and partially for θ = 53°. As the gravitational angle
was increased, the growth length of uniform composition became long. The
decrease of sample diameter reduced the dissolution area of GaSb. These
facts indicated that the dissolution and growth processes were strongly
influenced by gravity
