ISSN:
1432-0630
Keywords:
05.40−j
;
82.65.−i
;
68.90.+g
;
73.90.+f
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Abstract The spectral density functionsW(f) of the field-emission flicker noise of potassium adsorbed on the tungsten (111) region were determined. The analysis in terms of the Gesley-Swanson or the Timm and Van der Ziel model gives surface diffusion energies between 0.54 and 0.31 eV for (average) coverages from 0.15 to 0.38 and diffusion prefactors between 3×10−1 and 10−4 cm2/s. The fitting procedures are successful for both bounded and unbounded diffusion though in opposite order of temperature, as expected.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00616481
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