High-resolution time-of-flight measurements of the lattice parameter and thermal expansion of the icosahedral phase Al62Cu25.5Fe12.5

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作者：
Quivy, A. [1 ]
Lefebvre, S. [1 ]
Soubeyroux, J.L. [1 ]
Filhol, A. [1 ]
Bellissent, R. [1 ]
Ibberson, R.M. [1 ]
机构：
[1] CECM, Vitry-sur-Seine, France
来源：
| 1600年 / Int Union of Crystallography, Copenhagen, Denmark卷 / 27期
关键词：
Cryogenic liquids - Crystal lattices - Lattice constants - Nitrogen - Spalling - Thermal effects - Thermal expansion - X ray crystallography;
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摘要：
The lattice parameter of the stable icosahedral phase Al62Cu25.5Fe12.5 has been accurately measured over a wide temperature range from liquid nitrogen up to 873 K by powder diffraction. The experiment has been carried out on the High-Resolution Powder Diffractometer time-of-flight instrument at the ISIS spallation source and a particular analysis of the peak profiles is given. The thermal-expansion coefficient at room temperature of the i-AlCuFe is half the value of pure aluminum but its temperature dependence is the same.
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