ISSN:
1600-5724
Source:
Crystallography Journals Online : IUCR Backfile Archive 1948-2001
Topics:
Chemistry and Pharmacology
,
Geosciences
,
Physics
Notes:
The high-pressure form of cerium metal stable above 51 kbar, α'-Ce, is found to be orthorhombic with the α-uranium type of structure. At 58 kbar the cell dimensions of α'-Ce are a = 3.049, b = 5.998, c = 5.215 Å. A second, metastable, phase of cerium metal, α”-Ce, has also been observed. It is monoclinic body-centered with a deformed cubic face-centered structure. The cell dimensions of α”-Ce at 56 kbar are a = 4.762, b = 3.170, c = 3.169 Å, flβ = 91.73°. The volume change at the a-α' transition point is ΔV/V = 0.011. Cerium metal is fully tetravalent in both α'-Ce and α”-Ce.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1107/S0567739477000321
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