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Electrical instability of composite aluminum oxide films

✍ Scribed by R.S. Alwitt; C.K. Dyer

Publisher
Elsevier Science
Year
1978
Tongue
English
Weight
821 KB
Volume
23
Category
Article
ISSN
0013-4686

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✦ Synopsis

Akstrsct -Composite fi!ms of hydrous + anodii AI,O, have the peculiar property of losing field stren& after anodization. After some time on open circuit a film that had supported several hundred volts wi!! suddenly sustain no more than 10-M V. A "refomation" to the original voltage brings the film to a stable slate. Properties of this instability are described here. It is shown to result from diffusion ofwater into internal voids within the barrier oxide layer. The voids become filled with anodic oxide during the reformation.

πŸ“œ SIMILAR VOLUMES

Ellipsometric measurements of the barrie
Ellipsometric measurements of the barrier layer in composite aluminum oxide films
✍ C.K. Dyer; R.S. Alwitt πŸ“‚ Article πŸ“… 1978 πŸ› Elsevier Science 🌐 English βš– 715 KB

Ahatract -The composite oxide film (hydrous + anodic) formed on aluminum foil was chemically stripped to remove only the outer hydrous layer. Ellipsometry of the remaining barrier film showed it to be thinner and have a higher refractive index than conventional anodic barrier films grown to the same