Tip-induced domain structures and polarization switching in ferroelectric amino acid glycine

摘要: Bioorganic ferroelectrics and piezoelectrics are becoming increasingly important in view of their intrinsic compatibility with biological environment biofunctionality combined strong piezoelectric effect a switchable polarization at room temperature. Here, we study tip-induced domain structures switching the smallest amino acid β-glycine, representing broad class non-centrosymmetric acids. We show that β-glycine is indeed room-temperature ferroelectric can be switched by applying bias to non-polar cuts via conducting tip atomic force microscope (AFM). Dynamics these in-plane domains studied as function an applied voltage pulse duration. The shape dictated screening boundaries mediated growth defects. Thermodynamic theory explain propagation induced AFM tip. Our findings suggest properties controlled charged walls which turn manipulated external bias.