Experimental study of the proposed super-thermal-conductor: BAs
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Recent calculations predict a super-thermal-conductivity of ∼2000 Wm-1K-1, comparable to that of diamond, in cubic boron arsenide (BAs) crystals, which may offer inexpensive insulators with super-thermal-conductivity for microelectronic device applications. We have synthesized and characterized single crystals of BAs with a zinc blende cubic structure and lattice parameters of a = 4.7830(7) Å. A relatively high thermal conductivity of ∼200 Wm-1K-1is obtained, close to those of best non-carbon crystal insulators, such as SiC, although still an order of magnitude smaller than the value predicted. Based on our XPS, X-ray single crystal diffraction, and Raman scattering results, steps to achieve the predicted super-thermal conductivity in BAs are proposed.
Date issued
2015-02Department
Massachusetts Institute of Technology. Department of Mechanical EngineeringJournal
Applied Physics Letters
Publisher
AIP Publishing
Citation
Lv, Bing et al. “Experimental Study of the Proposed Super-Thermal-Conductor: BAs.” Applied Physics Letters 106, 7 (February 2015): 074105 © 2015 AIP Publishing LLC
Version: Final published version
ISSN
0003-6951
1077-3118