The procedure of simulating convergent beam electron diffraction (CBED) pattern of quasicrystals by dynamical theory is described. The simulated patterns are generally coincide with the experimental patterns. The var...The procedure of simulating convergent beam electron diffraction (CBED) pattern of quasicrystals by dynamical theory is described. The simulated patterns are generally coincide with the experimental patterns. The variations of intensity distribution in CBED pattern with the amplitude and phase of the structure factor of quasicrystal are calculated with dynamical theory. The sensitivity of intensity distribution to the structure factor is investigated.展开更多
The obvious residual strains were observed at the interface of Gr(C)/Mg composite. The lattice parameters in the strained area were determined by fitting the distances between a projecting center and HOLZ lines in CBE...The obvious residual strains were observed at the interface of Gr(C)/Mg composite. The lattice parameters in the strained area were determined by fitting the distances between a projecting center and HOLZ lines in CBED patterns with the least square method. Because it is difficult to ascertain the accurate position of the projecting center, an experimental center was set up and its coordinates relative to the projecting center were introduced as system parameters. In addition, an analysis of the distribution of the residual strains in the interface and matrix was carried out with the LACBED technique.展开更多
基金the National Natural Science Foundation of China!59871034
文摘The procedure of simulating convergent beam electron diffraction (CBED) pattern of quasicrystals by dynamical theory is described. The simulated patterns are generally coincide with the experimental patterns. The variations of intensity distribution in CBED pattern with the amplitude and phase of the structure factor of quasicrystal are calculated with dynamical theory. The sensitivity of intensity distribution to the structure factor is investigated.
文摘The obvious residual strains were observed at the interface of Gr(C)/Mg composite. The lattice parameters in the strained area were determined by fitting the distances between a projecting center and HOLZ lines in CBED patterns with the least square method. Because it is difficult to ascertain the accurate position of the projecting center, an experimental center was set up and its coordinates relative to the projecting center were introduced as system parameters. In addition, an analysis of the distribution of the residual strains in the interface and matrix was carried out with the LACBED technique.
