The domain structure of the electrically biaxial β‐phase of a ferroelectric NaH3(SeO3)2 crystal and its change with the applied electric field have been studied by means of scanning electron microscopy. The 180°‐domain structure corresponding to the model earlier proposed has been visualized for the first time. The supposed appearance of bound charges on non‐180°‐domain walls at 180°‐switching under the applied field not parallel to the bisectrix between the Ps‐axes is confirmed.
The mirror electron microscopy observation of an electrical instability in compensated germanium due to the propagation of recombination waves is described. The potential and field distributions along the crystal are obtained by evaluation of the electron mirror images on a digital computer. c l I O M O U b H ) 3JleKTpOHHOrO 3epRaJILHOrO MHKpOCIcOIIa IIOJIyqeHO H306paXeHMe 3neKTpHqeCROfi HeyCTOfiqHBOCTH B KOMlTeHCHpOBaHHOM repMaHHH, CBfi3aHHOfi C 06pa3OBaHHeM peKOM6EIHaqHOHHbIX BOJIH. n o KOHTpaCTy IlOJlyqeHHbIX 3JIeIFTpOHHOa e p~a n b~b~x Mmpo@oTorpa@Hfi n p o m s e~e~ pacueT pacnpeneneHm HanpsmeH-HOCTM n o m EI noTeaqnana no nosepxHocm o6pa3ua.
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