The structure and electrical resistance of thin scandium films (II). F.C.C.–lattice phase observed in films obtained in a vacuum of 10−8 Torr
✍ Scribed by Dipl.-Phys. V. B. Loboda; C.f.-m.n.; dozent I. E. Protsenko
- Publisher
- John Wiley and Sons
- Year
- 1981
- Tongue
- English
- Weight
- 453 KB
- Volume
- 16
- Category
- Article
- ISSN
- 0232-1300
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✦ Synopsis
Abstract
Phase composition of the Sc‐films up to 200 Å thick obtained in a vacuum of 3 · 10^−8^ Torr, condensation rate being ω ⋍ 1 to 6 Å/s and ω ⋍ 40 å/s up to 10^−7^ Torr, have been studied by an electron‐diffraction examination. A phase with an f.c.c.‐lattice and a lattice parameter a = 4.76 to 4.80 ± 0.01 Å 0.01 Å is observed in films d ≲ 60 Å thick, whilst with films having a thickness d ≳ 90 Å a h.c.p.‐phase is characteristic for solid specimens. Two‐phase composition is observed in an interjacent interval of thicknesses.
An analysis performed permitted to conclude that the f.c.c.‐phase observed is a ScH~x~‐hydride forming during the post‐condensation delay time on a basis of a poly‐morphic modification.