New Technique for Crystal Growth and Phase Transition in TlInS2 Crystals

Crystal Growth by Traveling Heater Method

“…Such simpler systems use for the vertical translation motion either the evaporation of water or the progressive emptying of a liquid, like oil, through a valve [14].…”

The conduction mechanism and thermoelectric phenomenon in layer crystals

“…This is because the other semiconductor materials of the same class, i.e. A III B VI , have different results as observed earlier by the present author [7,8,10]. The energy gap can be determined from the inclination angle of the linear dependence of the (σ -10 3 /T ) plot.…”

“…Crystals, in the present investigation, were grown using the new technique which was published recently [7]. This technique was based on a modification of the travelling heater method (THM) and was designed by the present author.…”

“…The tapered ampoule with its charge at one end was supported in its place in the centre of the movable three-zone tube furnace. Melting, agitating the ampoule, crystallization and solidification processes were achieved as described earlier [7]. According to the phase diagram 19 days were needed for the complete crystal growth programme [1].…”

“…Many authors have investigated the absorption band edge [3], the reflection spectra [4], the long-wave optical phonons [5] and the switching effect [6] in the In 6 S 7 layer crystals. To the best of our knowledge the electrical properties, Hall effect, thermoelectric power and scattering mechanism of In 6 S 7 have not yet been investigated. The main reason for the scarcity of these data is the difficulty of synthesizing the In 6 S 7 crystal.…”