Electroforming and conduction in thin anodized Y2O3 films
| Autor: | S. Kuriki, Goro Matsumoto, A. Noya |
|---|---|
| Rok vydání: | 1978 |
| Předmět: |
Materials science
Anodizing Negative resistance Metals and Alloys Oxide Ionic bonding Surfaces and Interfaces Thermal conduction Surfaces Coatings and Films Electronic Optical and Magnetic Materials Electronegativity Metal chemistry.chemical_compound chemistry visual_art Electroforming Materials Chemistry visual_art.visual_art_medium Composite material |
| Zdroj: | Thin Solid Films. 48:27-41 |
| ISSN: | 0040-6090 |
| DOI: | 10.1016/0040-6090(78)90328-0 |
| Popis: | A study of the conduction in anodized Y 2 O 3 films has revealed that YY 2 O 3 -metal junctions undergo two types of electroforming. Experiments on the forming characteristics indicate that one type of forming originates in flaws or weak spots of the oxide film. In the other type the forming voltage, which could be defined for both voltage polarities with good reproducibility, depends on oxide thickness and on temperature. After forming, the voltage-controlled negative resistance appears in such a manner that the probability of its appearance is correlated with the electronegativity of the counterelectrode metal. From the correlation between the forming voltage and the anodizing voltage and from knowledge of the defective structure of Y 2 O 3 crystals which the oxide film may posses, it is suggested that an ionic process is operative in the initiation of forming. |
| Databáze: | OpenAIRE |
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