Previously only the direction of the Burgers vector of these types of defects has been determined unequivocally from experiment alone. The direct experimental determination of the Burgers vector has been achieved by combining conventional diffraction contrast experiments with a detailed analysis of the ...
(1980): Determination of the Burgers vector of a dislocation by weak-beam imaging in a HVEM. Phil. Mag. A, 42, 453-462.Y. Ishida, H. Ishida, K. Kohra, and H. Ichinose, Determination of the Burgers vector of a dislocation by weak-beam imaging in a HVEM , Philos. Mag. A 42 (...
we shall work with the euclidean norm of the vector \(u(x)\) . we shall write that \(\psi \in \delta _2\) if it satisfies the \(\delta _2\) -condition: \(\psi (2\lambda )\le c\psi (\lambda )\) , for every \(\lambda >0\) , with a constant \(c\) independent of ...
Article history: Different definitions of the Burgers vector and the corresponding construction of the Burgers Received 10 May 2018 circuit for dislocation loops and straight dislocations, created by the displacement discon- Accepted 20 August 2018 tinuity imposed across different surface cuts are rev...
In this case, the disclination intensity may also be written in terms of the Burgers vector length as β0 = 1 − n b0 Γ , thus the energy density becomes (54) n = b0 4Γ n, (55) i.e., a discrete energy per unit of length. This fact may have consequences on the number of...
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The relaxation was carried out until the residual forces per degree of freedom were reduced to a force-norm of 10−8 eV Å−1. These relaxed configurations were then homogeneously scaled up to the lattice constant at 300 K (a300 K = 4.096 Å) and equilibrated for ...
where εM is the norm of the strain in the Maxwell element in a Burgers material (see Methods), AM is a pre-exponential factor, COH and r are the water concentration and its exponent, σ is the norm of deviatoric stress tensor, n is the stress exponent, H = Q + pΩ is...
This criterion is used for characterization of Burgers vector of dislocations in feldspars. The validity of the criterion in elastically anisotropic medium is discussed. 展开 关键词: Technical Report DOI: 10.1080/01418618208236178 被引量: 7
The Burgers vector of dislocations in the quasicrystalline AlCuFe icosahedral phase has been studied by means of diffraction contrast analyses and defocused convergent-beam electron diffraction. The size of the Burgers vector in real space is found to be 0路307 nm. This is the first observation ...