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Heat propagation in high Tc films investigated by optical response measurements

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Zeuner, S. ; Lengfellner, Hans ; Betz, J. ; Renk, Karl Friedrich ; Prettl, Wilhelm
Date of publication of this fulltext: 11 Oct 2010 12:19


The optical response of granular Tl‐Ba‐Ca‐Cu‐O films has been used to investigate thermal properties of the films. An analysis of the response using a heat transfer model yields a thermal diffusivity D=10−3 cm2/s at 150 K which rises to 6×10−3 cm2/s at a temperature of 30 K and allows for an estimation of the boundary resistance Rbd≊10−3 K cm2/W between film and substrate. The dependence of the ...


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