Electronic Resource
[S.l.]
:
International Union of Crystallography (IUCr)
Acta crystallographica
38 (1982), S. 163-165
ISSN:
1600-5724
Source:
Crystallography Journals Online : IUCR Backfile Archive 1948-2001
Topics:
Chemistry and Pharmacology
,
Geosciences
,
Physics
Notes:
An accurate X-ray diffraction investigation has been carried out on two single crystals of lithium. The data from crystal 1 were obtained at temperatures of 248 and 296 K, and those for crystal 2 in the temperature range 293 to 423 K. The measured integrated intensities have been analysed for the presence of anharmonicity in the atomic vibrations by using a temperature factor based on a one-particle potential of the form V(u) = ½ αu2 + γu4 + δ(u4x + uy4 + uz4 - u4). An average value for the parameter δ of 290 ± 140 eV nm-4 was found. No significant value of γ was found in the analysis of data from crystal 1, but a value of -360 ± 40 eV nm-4 was obtained from the higher-temperature data of crystal 2.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1107/S0567739482000291
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