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Experimental study of the proposed super-thermal-conductor: BAs

Journal Article · · Applied Physics Letters
DOI:https://doi.org/10.1063/1.4913441· OSTI ID:1387754
 [1];  [1];  [2];  [1];  [3];  [2];  [4];  [3];  [1];  [5]
  1. Univ. of Houston, TX (United States). Dept. of Physics. Texas Center for Superconductivity
  2. Univ. of Houston, TX (United States). Dept. of Chemistry. Texas Center for Superconductivity
  3. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Dept. of Mechanical Engineering
  4. Boston College, Chestnut Hill, MA (United States). Dept. of Physics
  5. 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) (SC-22)
Grant/Contract Number:
SC0001299
OSTI ID:
1387754
Alternate ID(s):
OSTI ID: 1210672
OSTI ID: 22412673
Journal Information:
Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 7 Vol. 106; ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English

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Cited By (16)

High Thermal Conductivity in Isotopically Enriched Cubic Boron Phosphide journal September 2018
High Thermal Conductivity in Boron Arsenide: From Prediction to Reality journal April 2019
High Thermal Conductivity in Boron Arsenide: From Prediction to Reality journal April 2019
Seeded growth of boron arsenide single crystals with high thermal conductivity journal January 2018
Impurity-derived p -type conductivity in cubic boron arsenide journal December 2018
Mechanical properties of boron arsenide single crystal journal April 2019
Perspective on ab initio phonon thermal transport journal August 2019
Thermodynamic calculation and its experimental correlation with the growth process of boron arsenide single crystals journal October 2019
Effect of boron sources on the growth of boron arsenide single crystals by chemical vapor transport journal August 2019
Comparison of four-probe thermal and thermoelectric transport measurements of thin films and nanostructures with microfabricated electro-thermal transducers journal February 2018
Ab initio study of the effect of vacancies on the thermal conductivity of boron arsenide journal July 2016
Ab initio phonon point defect scattering and thermal transport in graphene journal January 2018
Antisite Pairs Suppress the Thermal Conductivity of BAs journal September 2018
Experimental observation of high thermal conductivity in boron arsenide journal July 2018
Unusual high thermal conductivity in boron arsenide bulk crystals journal July 2018
High thermal conductivity in cubic boron arsenide crystals journal July 2018

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