| Autor: |
A.C. Moleman, A.A. Menovsky, J.J.M. Franse |
| Rok vydání: |
1984 |
| Předmět: |
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| Zdroj: |
Journal of Crystal Growth. 67:31-36 |
| ISSN: |
0022-0248 |
| DOI: |
10.1016/0022-0248(84)90127-1 |
| Popis: |
We describe our observations on the unusual formation and morphology of whiskers of the intermetallic uranium compound UPt3 (MgCd3 hexagonal-type of structure). Needle-like whiskers of this compound grow spontaneously from the stoichiometric UPt3 melt at fast cooling on a water-cooled copper hearth. A “1 - s” screw dislocation growth mechanism is suggested. Most of the whiskers have a regular shape with a typical cross-section in the form of an equilateral trapezium. The c-axis is always found to be parallel to the whisker axis. Lattice parameters from Weisenberg X-ray measurements are: a = 5.7530 (4) A, c = 4.9010 (4) A. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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