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After deuterium spillover from Pt supported on NaY zeolite onto Nay, t h e spilt-over particles diffuse into t h e HNaY part of a two-component Pt/NaY-HNaY sample where an H-D exchange of t h e OH groups takes place, as

Measurements of the dielectric permittivity are reported for a solid solution of deuterated antiferroelectric betaine and ferroelectric betaine at frequencies in the range . This crystal orders antiferroelectrically at . The dielectric response over the whole of the temperature region 50 - 300 K shows ac and dc conduction. The activation energy of the dc conduction was found to be (0.015 eV).