ISSN:
1573-4803
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract The Debye-Waller parameters, the effective valueB eff, the dynamic componentB d and the static componentB s, of lead sulphide powders with different particle sizes were determined for the bulk and for each constituent atom, lead and sulphur. The effective values for each atom,B eff (Pb) andB eff (S), were linearly related to that for the bulk,B eff (PbS). The effective value and the dynamic component for the bulk,B eff (PbS) andB d(PbS), were almost equal to those for lead,B eff(Pb) andB d (Pb), suggesting a small contribution of sulphur atoms to Debye-Waller parameters for the bulk. The mean square displacement of the bulk, 〈u 2〉Pbs, was expressed by the atomic mass averaged mean square displacements 〈;u 2〉;Pb and 〈u 2〉s in PbS crystal. The Debye temperature θD calculated fromB d (PbS) increased with the decrease inB s(PbS), and was extrapolated to the θD-value of the single crystal atB s(PbS) = 0. A similar relation between θD andB s were found for lead atom, where θD (Pb) was a little bit smaller than θD (PbS).
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01132388
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