Abstract
The composition, structure and properties, as well as the current-voltage characteristics of a layered structure consisting of two 50 nm thick amorphous SiO2 films deposited by electron beam evaporation, between which a Zn film with a thickness that varied from 10 to 50 nm was deposited. Then these structures were annealed in air in the temperature range from 300 up to 450°C with a step of 50°C for 30 minutes. Planar electrodes with different configuration were used. They were made from gold, platinum and aluminum. It was found that after deposition on the sample surface, a granular structure with a grain size of 50-100 nm of SiO2 composition was formed. After annealing at 400°C, the sample roughness decreases from 25nm after deposition to 10 nm, and the grain size in plan increases to 100-200 nm. For films annealed at 400°C the current-voltage characteristics with hysteresis were obtained.
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