✍ Scribed by V.A. Lisovenko; M.T. Shpak; V.G. Antoniuk
No coin nor oath required. For personal study only.
Luminescence spectra(4.2 K) and etch patterns of thermally deformed anthraccnc single crystals are investigated. It is shown that the Dt band with AE = 235 cm-t (where AE is the energy gap between the bottom of the exciton band and the DI band) is due to the edge dislocations with the emergences at the (001) face running in the [OlO] direction whereas the D2 band with AE = 275 cm-' due to those with the emergences along the [ 1001 direction. The former are assumed to be (OlO)[ lOO]-type dislocations whereas the latter of (lOO)[OlO] type.
📜 SIMILAR VOLUMES
The frictional stress, 7B, which has to be overcome by moving dislocations, has boon determined by means of micro stress-strain measurements. A modification of the cyclic hysteresis method is being described, and this technique has been applied to a-brass crystals deformed into stages I and II. It