抄録
The electrical resistance and nitrogen sorption at liquid oxygen temperature were measured for barium films evaporated and heat-treated under various conditions. The conditions which provided the properties of the film were:
1. Temperature of substrate during deposition, Td,
2. Temperature of substrate at annealing, Ta, and
3. Pressure of residual gas during deposition, Pd.
Comparing the temperature variation of electrical resistance with sorption property for nitrogen, the authors reached the following conclusions:
1. Granular structure plays an important role in resistance as well as in nitrogen sorption,
2. The contribution of the imperfections included in each crystalline lattice is also remarkable at low temperature, but decays easily at higher temperature.
Discussions are also given on the mechanism of nitrogen sorption on barium film.
