In situ Observation of Supercooled Liquid--Crystal Phase Transition in Glassy Ferroelectric LaBGeO5

Inelastic light scattering was observed in situ from glassy ferroelectric LaBGeO5, which crystallizes the stillwellite-type stoichiometric phase, in the glass–supercooled liquid (SCL) and subsequent SCL–crystal phase transition regimes. The dynamics of the planar BO3 unit in the crystal growth period of the crystallization process was clarified through in situ observation.