2014 年 40 巻 4 号 p. 225-230
The nucleation and growth of two crystal phases were observed in situ in Sr(NO_3)_2-H_2O peritectic system. The high temperature phase, Sr(NO_3)_2, appeared as an initial phase in almost all the conditions studied although the low temperature phase, Sr(NO_3)_<2.>4H_2O, grew faster than the high temperature phase. These relations in the nucleation and growth were necessary for the evolution of the peritectic structure in which the high temperature phase was enclosed by the low temperature phase.