Accession Number:

AD0432857

Title:

VOIDS IN AGED SINGLE CRYSTAL PERMALLOY FILMS,

Descriptive Note:

Corporate Author:

FRANKLIN INST PHILADELPHIA PA

Personal Author(s):

Report Date:

1963-12-01

Pagination or Media Count:

15.0

Abstract:

Permalloy films epitaxially grown on NaCl in a vacuum of 10 to the -9th torr were examined before and after aging at room temperature. The original films were near perfect single crystals exhibiting rather sharp Kikuchi lines. After aging the films for two months, regions were observed which were considerably thinner than the rest of the film. Diffraction patterns of these thin regions showed that they were polycrystalline and could be identified as nickel oxide. The remainder of the film was still single crystalline. After aging for three months the thin regions had deteriorated into voids whose sides were oriented along crystallographic directions. Square, rectangular and octagonal voids were observed, depending upon whether the voids lay in 100 110 or 111 planes. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE