Thermal and electrical conductivity of a suspended platinum nanofilm
Thermal and electrical conductivity of a suspended platinum nanofilm
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DOI：
10.1063/1.1921350
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发表时间：
2005-04
影响因子：
4
通讯作者：
Xing Zhang;Huaqing Xie;M. Fujii;H. Ago;Koji Takahashi;T. Ikuta;H. Abe;Tetsuo Shimizu
中科院分区：
文献类型：
--
作者：
Xing Zhang;Huaqing Xie;M. Fujii;H. Ago;Koji Takahashi;T. Ikuta;H. Abe;Tetsuo Shimizu
本文报道了宽度260 nm、厚度28 nm、长度5.3μm的微细悬浮纳米铂薄膜的面内热导率和电导率的测量结果，实验结果表明，在77~330K温度范围内，纳米薄膜的电导率、电阻温度系数和面内热导率都大大低于相应的体积值。比较结果表明，该纳米膜的导热系数与导电率之间的关系可能不符合描述块体金属材料导热系数与导电率关系的Wiedemann-Franz定律。
This letter reports on the measurements of the in-plane thermal conductivity and the electrical conductivity of a microfabricated, suspended, nanosized platinum thin film with the width of 260nm, the thickness of 28nm, and the length of 5.3μm. The experimental results show that the electrical conductivity, the resistance-temperature coefficient and the in-plane thermal conductivity of the nanofilm are greatly lower than the corresponding bulk values from 77to330K. The comparison results indicate that the relation between the thermal conductivity and the electrical conductivity of this nanofilm might not follow the Wiedemann–Franz law that describes the relation between the thermal conductivity and the electrical conductivity of a bulk metallic material.