Study of ferroelectric domains structure on TGS crystals doped with L-? alanine

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Abstract
The domain structure of T.G.S. crystals doped with L-α alanine is investigated by scanning electron microscopy without metallization of the observed surface. Big zones observed in these crystals have, versus the voltage applied to the primary electron beam, a different contrast evolution from that we can observe for pure T. G. S. crystals. For domains obtained after heating the crystals above the Curie point, the evolution of the contrast observed for the ferroelectric domains is the same as for the ferroelectric domains of pure T.G.S. crystals and the shape of these domains is also lenticular.