Introduction of Research

Development of plastic/ferroelectric crystals

We have developed a new class of functional crystals, which we have named plastic/ferroelectric crystals, that exhibit a variety of properties originating from molecular rotation within the crystal lattice. These crystals behave as ferroelectrics at room temperature and undergo a phase transition at higher temperatures into a plastic crystal phase, where molecules rotate isotropically. Due to their softness and malleability, transparent polycrystalline films can be easily fabricated by compressing the powder. Moreover, these crystals demonstrate unique properties not found in conventional molecular crystals, such as the ability to freely control the direction of polarization.

Introduction of laboratory

Our research group investigates the structure and functions of molecular crystals. By analyzing molecular motions, phase transitions, and intermolecular interactions based on detailed crystal structure data, we aim to uncover the mechanisms behind their functional properties and explore ways to precisely control them. Through this approach, we pursue the development of novel molecular crystals with unique and advanced functions.