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Electron Microscopy and Holography II by Peter W. Hawkes (Eds.)

By Peter W. Hawkes (Eds.)

Advances in Imaging and Electron Physics merges long-running serials--Advances in Electronics and Electron Physics and Advances in Optical and Electron Microscopy. The sequence positive factors prolonged articles at the physics of electron units (especially semiconductor devices), particle optics at low and high energies, microlithography, photo technological know-how and electronic picture processing, electromagnetic wave propagation, electron microscopy, and the computing equipment utilized in these types of domain names.

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S. alloy A1-Li-Cu IQ Zone-melted A1-Li-Cu alloy A1-Li-Cu CA C. S. S. S. 6-nm period: A1-Pd DQ A1-Pd CA A1-Ni-Ru DQ Heat treatments Structures 900~ 14 h 900~ 48 h 900~ 40 h 1000 oC, 65 h 900~ 72 h 900 ~ 120 h 900~ 40 h llO0~ 11 h 900~ 280 h 1160~ 3 h Ni-basic structure S 1-type superstructure S 1-type superstructure Type-I superstructure Type-II superstructure Crystalline approximant Co-rich basic structure One-dimensional quasicrystal W-(A1CoNi) crystalline phase Pentagonal superstructure C. S.

It should be noted that diffuse scattering is apparently visible on the background around strong Bragg spots in diffraction patterns of the decagonal quasicrystals, taken with the incident beam parallel to the periodic axis, as can be seen clearly in Figures 2 ld and 24d. Such scattering results from local disordering from the ideal Penrose filing in an atomic arrangement. We know that the Penrose lattice, obtained mathematically from the projection of hypercubic lattices in the higher-dimensional space to three- or two-dimensional space, produces diffraction patterns consisting of sharp spots, described as a 28 KENJI HIRAGA FIGURE24.

D) Sublattices formed by connecting the ring contrasts with the same orientations of pentagonal symmetryas in (a). , 2000. Decagonal quasicrystal with ordered bodycentered (CsCl-type) hypercubic lattice. Philos. Mag. Lett. 80, pp. uk/journals) linear phason strain, associated with a window function on the internal subspace. Figure 16 shows the random phason strain, which is formed with the strip function randomly varied with the coordinate of Xll. The random phason strain produces local disordering in the quasiperiodic arrangement of L and S in the one-dimensional quasilattice, and flipping of lattice points in the twodimensional quasilattice (Fig.

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