Abstract
In the diffraction specimen chamber of an HU–11A electron microscope an evaporater and cryostat are equipped, and copper is evaporated on a copper substrate kept at temperatures between 77 K and 100 K. The films produced are observed by reflection electron diffraction. When condensed at 77 K with an impinging rate of 20 Å/sec, the films show a remarkable fiber texture, in which the <111> crystallite axes are normal to the substrate surface. When the films with remarkable fiber texture are annealed at 360 K, the texture disappears and notable grain growth occurs. The fiber texture becomes difficult to detect as the substrate temperature is raised. The mechanism of texture formation is discussed according to nucleation and growth theory. The results confirm the suggestion that the fiber texture formation at low temperature is a common phenomenon in f.c.c. metals.
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