Experimental study of the proposed super-thermal-conductor: BAs
Abstract
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 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.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Feb 16, 2015
- Source ID
- 10.1063/1.4913441
Entities
People
- Allan J Jacobson
- Bing Lv
- Ching-Wu Chu
- David Broido
- Gang Chen
- Qian Zhang
- Xiqu Wang
- Yongjie Hu
- Yucheng Lan
- Zhifeng Ren
Organizations
- Air Force Office of Scientific Research
- Boston College
- Lawrence Berkeley National Laboratory
- Massachusetts Institute of Technology
- Robert A. Welch Foundation
- University of Houston