Preliminary experiments referring to a periodic one-dimensional domain structure in LiNbO 3 are finally described.doi:10.1002/pssa.2210370115Peuzin, J. CLaboratoire de rayons X, C.N.R.S., GrenobleTasson, MLaboratoire de rayons X, C.N.R.S., GrenobleWILEY‐VCH VerlagPhysica Status Solidi...