New growth technique of potassium niobate crystal with peritectic system from molten zone in stoichiometric composition

KNbO3 crystal is an incongruent melting crystal from a peritectic system. At first, a crystal was formed from the molten zone center of the stoichiometric composition using our original modified floating zone technique. Then the crystal was grown continuously using the firstly formed crystal as seed crystal. A small crystal with facets could be grown. The phase of the grown crystal was investigated in comparison to the phase grown by the conventional floating zone technique.