GROWTH OF ZnS SINGLE CRYSTALS BY CVT TECHNIQUE UNDER DIFFERENT MASS TRANSPORT STABILITY CONDITIONS

EFFECT OFMASS TRANSPORT STABILITYAND UNDERCOOLING ON NUCLEATION OF ZNS CRYSTALS IN CLOSED AMPOULE CVT

ریز ریخت‌‌شناسی سطوح تک بلورهای ZnS رشد یافته به‌روش انتقال شیمیایی بخار

Micromorphological studies were carried out on the surfaces of the ZnS single crystals grown by chemical vapour transport (CVT). Different micromorphological patterns such as layers, steps, kinks, stripes and pits were observed using Scanning Electron Microscope. Formation of these patterns was correlated to the growth of crystals under theoretically predicted optimum and nonoptimum conditions.

Growth of Hg _xCdxTe single crystals by travelling heater method under accelerated crucible rotation conditions

The accelerated crucible r9tation technique (ACRT) has been applied to the THM growth of Hg I _xCdxTe crystals to grow the crystals at a higher rate. These higher growth rates, which should be achieved by extending the regions of convectional stirring towards the interfaces, have been used in an attempt to explain the results in terms of simple constitutional supercooling arguments. Some differ...

رشد و بررسی ترمودینامیکی تک بلورهای Se0.5ZnS0.5 به روش انتقال شیمیایی بخار

In this research, a thermodynamic model used to describe the growth of  single crystals by chemical vapor transport technique with iodine as the transporting agent. The optimum growth condition in the  system has been predicted theoretically based on partial of different components. Some experiments were carried out for growing  crystals by the chemical vapor transport method using iodine as a ...

Rock Stability under Different Fluid Flow Conditions

Dielectric anomalies in †111‡ oriented 0.955Pb„Zn1Õ3Nb2Õ3...O3À0.045PbTiO3 single crystals under different electrical and thermal conditions

A detailed investigation has been conducted on the dielectric anomalies induced by different electrical and thermal conditions in @111# oriented 0.955Pb(Zn1/3Nb2/3)O320.045PbTiO3 ~PZN-4.5%PT! single crystals. Application of a dc electrical field to the crystal results in field induced dielectric anomalies to occur at specific temperatures, which can be explained by the structural phase transiti...