Abstract
This report is a summary of our past five years experiments on the crystal growth in gels.
A technique for the growing of crystals in silicate gels was attempted. By controlling the softness and pH values of the gel at room temperature, various kinds of organic salt-crystals were grown. Acicular or needle-like crystals of Cu and Ni-oxalates and Ba-tartrate, granular or globular crystals of Fe and Co-tartrates, and single crystals of Ca, Sr, Cu and Mn tartrates were obtained. In particular, by means of the "double-layer technique" using the tube-method (T-method), the authors have attempted to enlarge a seed crystal to a larger single crystal. The growth behaviours in gel which concern the present experiment have been discussed in terms of "nucleation and growth" mechanism.
