Philosophical magazine. A/Philosophical magazine. A. Physics of condensed matter. Structure, defects and mechanical properties · 1997 · 38 citations · 8 references
Materials ScienceInorganic ChemistryDecaprismatic Al-co-ni CrystalsCorrelation LengthDiffraction PatternEngineeringCrystal StructureAluminium NitrideCrystal MaterialX-ray DiffractionApplied PhysicsX-ray Diffraction StudyChemistryCrystal FormationCrystallographyCrystal Structure DesignMicrostructure
Abstract The phase transformations of a series of decaprismatic Al-Co-Ni crystals were studied in situ by X-ray diffraction between ambient temperature and 1573 K. Five samples in the composition range Al74—70Co22—6Ni4—23 were investigated. In a small range at high temperatures, all specimens showed the diffraction pattern of the basic decagonal phase which has a 4 Å translation period. At lower temperatures and depending on the chemical composition, transformation to oriented nanodomain structures and a number of different superstructures were observed. The translation period of the superstructures is twice the translation period of the basic decagonal phase. Characteristic for these superstructures is a correlation length which is large in the periodic direction and small in directions perpendicular to it. The correlation length decreases with increasing temperature.
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Atomic structure of a decagonal Al-Co-Ni quasicrystal
Akiji Yamamoto, K. Kato, Tadaharu Shibuya et al. · Physical Review Letters · 1990 · 101 citations
X-ray Crystallography, Materials Science, Diffraction Intensity +15