Electronic Resource
[S.l.]
:
American Institute of Physics (AIP)
Journal of Applied Physics
74 (1993), S. 139-145
ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
The expression for the intensity distribution and computer-simulated images of screw dislocations with Burgers vector α〈111〉 or α/2〈111〉 viewed end on in cubic crystals subjected to a long-range uniaxial stress has been obtained by considering the anisotropy of both elastic and photoelastic properties of the material. The computer-simulated images of end-on screw dislocations show twofold symmetry with a pair of dark and bright petals which result from the effect of a long-range stress superimposed on that of the screw dislocations. The computer-simulated images are in good agreement with the experimental images observed in Ba(NO3)2 and Gd3Ga5O12 crystals. The principal stress of the long-range uniaxial stress field around the screw dislocation in the crystal wafer has been estimated, based on this theory.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.354146
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