Glassy to icosahedral phase transformation in Pd-U-Si alloys
Journal Article
·
· Phys. Rev. Lett.; (United States)
We observe for the first time the transformation of glassy alloys (Pd/sub 100-x/ - yU/sub x/Si/sub y/, x approx. = y approx. = 20 at.%) into a metastable I phase with quasicrystalline order upon annealing. The icosehdral symmetry of the I phase is confirmed by x-ray and electron diffraction. This phase can be formed only within a very narrow compositional range (<2 at.%) of U and Si, suggestive of a strong chemical ordering in it. The icosahedral and glassy phases have similar electrical transport properties. However, magnetic-susceptibility results indicate that the electronic structure of the I phase is very different from its glassy and crystalline (UPd/sub 3/) counterparts.
- Research Organization:
- Department of Physics, University of Virginia, Charlottesville, Virginia 22901
- DOE Contract Number:
- W-7405-ENG-82
- OSTI ID:
- 6269795
- Journal Information:
- Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 55:21; ISSN PRLTA
- Country of Publication:
- United States
- Language:
- English
Similar Records
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Related Subjects
36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
360602 -- Other Materials-- Structure & Phase Studies
ACTINIDE ALLOYS
ALLOYS
ANNEALING
COHERENT SCATTERING
DATA
DIFFRACTION
ELECTRICAL PROPERTIES
ELECTRON DIFFRACTION
EXPERIMENTAL DATA
GLASS
HEAT TREATMENTS
INFORMATION
NUMERICAL DATA
ORDER PARAMETERS
PALLADIUM ALLOYS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
PLATINUM METAL ALLOYS
SCATTERING
SILICON ALLOYS
TEMPERATURE DEPENDENCE
URANIUM ALLOYS
X-RAY DIFFRACTION
360102* -- Metals & Alloys-- Structure & Phase Studies
360602 -- Other Materials-- Structure & Phase Studies
ACTINIDE ALLOYS
ALLOYS
ANNEALING
COHERENT SCATTERING
DATA
DIFFRACTION
ELECTRICAL PROPERTIES
ELECTRON DIFFRACTION
EXPERIMENTAL DATA
GLASS
HEAT TREATMENTS
INFORMATION
NUMERICAL DATA
ORDER PARAMETERS
PALLADIUM ALLOYS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
PLATINUM METAL ALLOYS
SCATTERING
SILICON ALLOYS
TEMPERATURE DEPENDENCE
URANIUM ALLOYS
X-RAY DIFFRACTION