Thermal conductivity of Grafoil from 0.2 to 3 K
Thermal conductivity of Grafoil from 0.2 to 3 K
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Grafoil 的导热系数为 0.2 至 3 K
DOI：
10.1007/bf00681503
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发表时间：
1985
影响因子：
2
通讯作者：
O. Vilches
中科院分区：
文献类型：
--
作者：
L. D. Dillon;R. Rapp;O. Vilches
压缩剥落石墨的导热系数在与滚动平面平行（K∥）和法向（K⊥）的方向上测量，温度范围为0.2-3 K。测定了两种情况下的温度依赖性。在0.2-0.7 K的温度范围内，我们得到的值为0.95 ForK∥和1.6 ForK⊥；在0.7 - 2k范围内，我们得到1.6 forK∥和2.1 forK⊥；在2-3 K范围内，我们得到1.9 forK∥。温度依赖性f <0.7 K小于预期值。ForK∥，晶格和电子贡献的评价表明，在0.7 K以下，导热系数基本上是电子的。在2 K以上，在文献中发现的结果，我们的数据与他们很好地吻合。
The thermal conductivity of compressed exfoliated graphite was measured in the directions parallel (K∥) and normal (K⊥) to the rolling plane, in the temperature range of 0.2–3 K. The temperature dependence was determined in both cases. ForK=aTbin the temperature range of 0.2–0.7 K we get values forb of 0.95 forK∥and 1.6 forK⊥; in the range 0.7–2 K we get 1.6 forK∥and 2.1 forK⊥; and in the range 2–3 K we get 1.9 forK∥. TheK⊥temperature dependence forT<0.7 K is smaller than what would be expected. ForK∥, evaluations of lattice and electronic contributions show that below 0.7 K the thermal conductivity is basically electronic. Above 2 K, where results are found in the literature, our data are in good agreement with them.