Dipole of misfit dislocations in axially symmetric structures |
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| Authors: | J. Colin J. Grilh |
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| Affiliation: | 1. The Institute of Scientific and Industrial Research , Osaka University , Ibaraki, Osaka 567-0047, Japan;2. Department of Applied Science for Electronics and Materials , Kyushu University , Kasuga, Fukuoka 816-8580, Japan;3. R&4. D Institute of Metals and Composites for Future Industries , Sendai, Miyagi 980-8577, Japan |
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| Abstract: | The nucleation of a pair of misfit dislocations of Burgers vectors b 1 and b 2 with b 1 + b 2 = 0 has been studied for the case of an axially symmetric two-phase structure. Considering a cylindrical inclusion epitaxially stressed in a unbounded matrix, the variation in the total energy due to the formation of the dipole has first been determined as a function of the radius of the inclusion and the epitaxial stress. The conditions for nucleation of the dipole on the interface have then been investigated as a function of the ratio of the shear modulus and of the misfit stress. |
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