Experimental study of the proposed super-thermal-conductor: BAs
- Univ. of Houston, TX (United States). Dept. of Physics. Texas Center for Superconductivity
- Univ. of Houston, TX (United States). Dept. of Chemistry. Texas Center for Superconductivity
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Dept. of Mechanical Engineering
- Boston College, Chestnut Hill, MA (United States). Dept. of Physics
- Univ. of Houston, TX (United States). Dept. of Physics. Texas Center for Superconductivity; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Recent calculations predict a super-thermal-conductivity of ~2000 Wm-1 K-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 here 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-1 K-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.
- Research Organization:
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- SC0001299
- OSTI ID:
- 1387754
- Journal Information:
- Applied Physics Letters, Vol. 106, Issue 7; ISSN 0003-6951
- Publisher:
- American Institute of Physics (AIP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
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