Photoinduced surface deformations in ion-conducting Ag-As-S glasses. I. Isotropic deformations produced by small light spots

Journal of Applied Physics

Volumn 89, Issue 9, 2001, Pages 4697-4702

  Gotoh, T ^a   Tanaka, K ^a  

^a HOKKAIDO UNIVERSITY   (Japan)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0035340820     PISSN: 00218979     EISSN: None     Source Type: Journal    
DOI: 10.1063/1.1357471     Document Type: Article

References (27)

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19. This magnitude is obtained as follows: A simple calculation shows ΔV/V = {(dv/dx)/v + m(Ag)/m}Δx, where ΔV/V is the fractional volume change of an illuminated region, v the specific volume, x the fractional atomic content of Ag, m(Ag) the atomic weight of Ag, and m the averaged atomic weight for the initial composition. In this equation, the first term of the right-hand side reflects some structural change with the Ag content, and the second term represents the volume increase of the illuminated region with the Ag accumulation. Figure 2 implies that the first term is negative, which means that the amorphous structure becomes compact with x, while the second term is always positive. Quantitatively, using the solid line in Fig. 2, we obtain ΔV/V∼Δx at around x = 0.25, i.e., the second term prevails in the volume change.
20. -1) is the absorption coefficient of the film, d the film thickness, l the light intensity, κ (= 0.02 W/cm K) the thermal conductivity of the substrate glass, and r the radius of light spots.
21. 1/2, where D is the diffusion coefficient and t is a relevant time.
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