Elemental engineering: Epitaxial uranium thin films

R. Springell; B. Detlefs; G. H. Lander; R. C. C. Ward; R. A. Cowley; N. Ling; W. Goetze; R. Ahuja; W. Luo; B. Johansson

doi:10.1103/PhysRevB.78.193403

Elemental engineering: Epitaxial uranium thin films

R. Springell^*, B. Detlefs, G. H. Lander, R. C. C. Ward, R. A. Cowley, N. Ling, W. Goetze, R. Ahuja, W. Luo, B. Johansson

^*Corresponding author for this work

Interface Analysis Centre

Research output: Contribution to journal › Article (Academic Journal) › peer-review

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Abstract

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.

Original language	English
Article number	193403
Number of pages	4
Journal	Physical Review B: Condensed Matter and Materials Physics
Volume	78
Issue number	19
DOIs	https://doi.org/10.1103/PhysRevB.78.193403
Publication status	Published - Nov 2008

Keywords

buffer layers
charge density waves
crystal structure
gadolinium
magnetic epitaxial layers
niobium
sputter deposition
uranium
CHARGE-DENSITY-WAVE
INTRINSIC STRESS
ALPHA-URANIUM
X-RAY
SCATTERING
SYSTEMS
GROWTH
METALS
STATE

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@article{57e24e71525242ac932c89798c3ba7f5,

title = "Elemental engineering: Epitaxial uranium thin films",

abstract = "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.",

keywords = "buffer layers, charge density waves, crystal structure, gadolinium, magnetic epitaxial layers, niobium, sputter deposition, uranium, CHARGE-DENSITY-WAVE, INTRINSIC STRESS, ALPHA-URANIUM, X-RAY, SCATTERING, SYSTEMS, GROWTH, METALS, STATE",

author = "R. Springell and B. Detlefs and Lander, {G. H.} and Ward, {R. C. C.} and Cowley, {R. A.} and N. Ling and W. Goetze and R. Ahuja and W. Luo and B. Johansson",

year = "2008",

month = nov,

doi = "10.1103/PhysRevB.78.193403",

language = "English",

volume = "78",

journal = "Physical Review B: Condensed Matter and Materials Physics",

issn = "1098-0121",

publisher = "American Physical Society (APS)",

number = "19",

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TY - JOUR

T1 - Elemental engineering: Epitaxial uranium thin films

AU - Springell, R.

AU - Detlefs, B.

AU - Lander, G. H.

AU - Ward, R. C. C.

AU - Cowley, R. A.

AU - Ling, N.

AU - Goetze, W.

AU - Ahuja, R.

AU - Luo, W.

AU - Johansson, B.

PY - 2008/11

Y1 - 2008/11

N2 - 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.

AB - 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.

KW - buffer layers

KW - charge density waves

KW - crystal structure

KW - gadolinium

KW - magnetic epitaxial layers

KW - niobium

KW - sputter deposition

KW - uranium

KW - CHARGE-DENSITY-WAVE

KW - INTRINSIC STRESS

KW - ALPHA-URANIUM

KW - X-RAY

KW - SCATTERING

KW - SYSTEMS

KW - GROWTH

KW - METALS

KW - STATE

U2 - 10.1103/PhysRevB.78.193403

DO - 10.1103/PhysRevB.78.193403

M3 - Article (Academic Journal)

SN - 1098-0121

VL - 78

JO - Physical Review B: Condensed Matter and Materials Physics

JF - Physical Review B: Condensed Matter and Materials Physics

IS - 19

M1 - 193403

ER -

Elemental engineering: Epitaxial uranium thin films

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