Emergence of ambient temperature ferroelectricity in meso-tetrakis(1-methylpyridinium-4-yl)porphyrin chloride thin films

M. Vasilopoulou, P. Dimitrakis, D. G. Georgiadou, D. Velessiotis, G. Papadimitropoulos, D. Davazoglou, A.G. Coutsolelos, P. Argitis, Applied Physics Letters (2013) 103, 022908.