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Elemental engineering: Epitaxial uranium thin films
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DOI：10.1103/PhysRevB.78.193403.png)
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Epitaxial films of the well-known alpha (orthorhombic) structure and an unusual hcp form of uranium have been grown on Nb and Gd buffers, respectively, by sputtering techniques. In a 5000 A film of alpha-U a charge-density wave has been observed, and its properties are different from those found in the bulk. The 500 A hcp-U film has a c/a ratio of 1.90(1), which is unusually large for the hcp structure. Theoretical calculations show that this hcp form is metastable and predict that it orders magnetically.
Keyword:
buffer layers
charge density waves
crystal structure
gadolinium
magnetic epitaxial layers
niobium
sputter deposition
uranium
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期刊
IF:
3.7
论文数:
15.4W
被引数:
41.0W
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