一次相転移のカイネティクス [in Japanese] Kinetics of the First-Order Phase Transition [in Japanese]
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A characteristic waiting time appears at fixed temperature above <I>T</I><SUB>c</SUB> or <I>M</I><SUB>s</SUB> for elements, alloys and polymers, where <I>T</I><SUB>c</SUB> is the usual first-order phase transition temperature and <I>M</I><SUB>s</SUB> is the normal martenstic phase transition temperature. This waiting time is called incubation time and related with the nucleation probability derived from a nucleation barrier. That is why nucleation process is regarded as thermal activated process at the non-equilibrium state. In particular, such a long incubation time of In-Tl alloys has a good agreement with experimental results by using Roitburd method. Furthermore, detailed and accurate experiments enable us to be aware that two dimensional growth occurs above <I>T</I><SUB>p</SUB>, where peculiar temperature, <I>T</I><SUB>p</SUB>, controls the time development of diffraction patterns and appears above <I>M</I><SUB>s</SUB> in this system.<BR>In contrast to soft phonon model, incubation time is essential property of the first-order phase transition and the key to resolve nucleation and growth process.
X-RAYS 38(2), 151-159, 1996-04-30
The Crystallographic Society of Japan