Experimental study of the proposed super-thermal-conductor: BAs
- Department of Physics and Texas Center for Superconductivity, University of Houston, Houston, Texas 77204-5002 (United States)
- Department of Chemistry and Texas Center for Superconductivity, University of Houston, Houston, Texas 77204-5003 (United States)
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)
- Department of Physics, Boston College, Chestnut Hill, Massachusetts 02467 (United States)
Recent calculations predict a super-thermal-conductivity of ∼2000 Wm{sup −1} K{sup −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{sup −1} K{sup −1} is 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.
- OSTI ID:
- 22412673
- Journal Information:
- Applied Physics Letters, Vol. 106, Issue 7; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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