physica status solidi (a) · 2009 · 23 citations · 17 references
Natural SciencesMaterials EngineeringMaterials ScienceCrystal StructureMechanical Behavior Of MaterialsSolid State PhysicsCrystal LatticeCrystal SystemsCrystallographyDislocation MechanicsX-ray CrystallographyX-ray DiffractionDislocation CharacterizationDislocationsEdge DislocationsEgg LysozymeOrthorhombic SystemScrew DislocationsSlipTetragonal System
Abstract Dislocations in large hen egg‐white lysozyme (HEWL) crystals with tetragonal and orthorhombic forms were investigated by means of synchrotron monochromatic‐beam X‐ray topography. For the tetragonal form, not only screw dislocations but also edge ones are found to be included in predominant ones parallel to 〈110〉 directions. In addition, curved dislocations that can be related to (001)〈110〉 slip system are observed at the crystal edges. For the orthorhombic form, predominant edge dislocations with [001] Burgers vector are stereoscopically observed. It is clarified that they are generated at or around the nucleus centre or sector boundary.
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Titus J. Boggon, John R. Helliwell, Russell A. Judge et al. · Acta Crystallographica Section D Biological Crystallography · 2000 · 65 citations