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Kinetic coefficient on a solid/liquid interface in liquid-phase epitaxial growth of GaP/GaP(1 1 1)B was measured by an in situ observation technique using a near-infrared microscopic interferometer under a static magnetic field of 4 T. The morphological stability of the interface during the growth was quantitatively evaluated based on a linear perturbational approach taking account of the kinetic coefficient. The calculated value of the macrostep wavelength agreed well with the measured one.

Accepted: 2000-06-19, 資料番号: SA1003763000

The acceleration of gravity is often an important factor influencing a processing procedure, in addition to thermodynamic parameters such as temperature and pressure, especially when a fluid phase is involved. Accordingly, the control of acceleration is important to obtain high quality materials, and to understand the heat and mass transport phenomena during the process. In recent years, materials processing experiments have been performed not only in microgravity but also in hypergravity environments. Utilization of a centrifuge is used to generate hypergravity acceleration on earth. Most centrifugal crystal growth experiments were employed to study the relationship between acceleration and 1) composition and defect distributions in the resulting crystal,e. g,1,22) sedimentation during growth,3 3) morphological instability of the solid/liquid (S/L) interface,4,5 4) growth striations,6,7 5) temperature oscillations in the liquid phase, 8,9 and 6) heat transmission.10