Physical properties of icosahedral and glassy Pd?U?Si alloys

Bretscher, H.; Grütter, Peter; Indlekofer, G.; Jenny, H.; Lapka, R.; Oelhafen, P.; Wiesendanger, R.; Zingg, Tobias; Güntherodt, H.‐J.

doi:10.1007/bf01304246

Cited by 21 publications

(2 citation statements)

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“…It has to be stressed also that the present work quantifies for the first time the chemical and force constants disorder which was observed earlier in structural or dynamic studies of quasi-crystals [30][31][32].…”

Section: 813mentioning

confidence: 71%

Icosahedral crystals: neutron diffraction tells you where the atoms are

Janot

Boissieu

Dubois

et al. 1989

J. Phys.: Condens. Matter

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Neutron diffraction data were obtained from a single-phase icosahedral powder of the system AI,,Si,Mn,, and its modification by isomorphous substitution on the Mn sites. Amplitudes and phase differencesof the partial structure factors (FA], FMn) were determined. From their Q--dependences within a strip-projection approach, phases were reconstructed. Atomic densities were then calculated in the physical space and in the six-dimensional periodic lattice, resultingin the first experimentally deduced decoration of the quasi-periodic network. The Mackay icosahedron no longer appears as the necessary basic structural unit. In six dimensions the structure has a simple CsCI-like space-group symmetry.

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Section: 813mentioning

confidence: 71%

Icosahedral crystals: neutron diffraction tells you where the atoms are

Janot

Boissieu

Dubois

et al. 1989

J. Phys.: Condens. Matter

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“…Only the presence of Pd within Pd-Si precipitates are reported in this examination because of our limited detection capabilities for Si with EDS. (Poon et al, 1985, Kofalt et al, 1987, Bretscher et al, 1987, Lugg et al, 2015. Differentiating Pd and Ag in these patterns is not resolvable given our uncertainty of measuring patterns within close proximity to neighboring lattice spots (±0.08 Å).…”

Section: Chemistry Of Pd and Agmentioning

confidence: 99%

Advanced Electron Microscopy and Micro analytical technique development and application for Irradiated TRISO Coated Particles from the AGR-1 Experiment

Rooyen

Lillo

Wen

et al. 2017

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The first experiment (AGR-1) was completed in November 2009 at an effective 620 full-power days. Objectives of the AGR-1 experiment were primarily to provide lessons learned on the multi-capsule test train design, provide early data on fuel performance for use in further development of the fuel fabrication process, and to provide fuel specimens for post-irradiation examination and safety testing at high temperatures. Fuel performance assessment focuses on the behavior of the kernel and tristructural isotropic (TRISO) coating layers and retention of fission products by coated particles and fuel compacts. Knowledge and understanding of fission product transport mechanisms are fundamental objectives for facilitating potential improvements that contribute to extension of the performance envelope of modern TRISO-coated particle fuel. This report describes the advanced microscopy and micro-analysis results on selected AGR-1 coated particles from Compacts 6-3-2, 5-3-1, 5-2-3, 1-3-1, 4-1-1, and 4-3-3, which represent compacts from four capsules irradiated to burnups of 11.4 to 19.4% fissions per initial metal atom

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