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Title: Proton irradiation effect on thermoelectric properties of nanostructured n-type half-Heusler Hf 0.25 Zr 0.75 NiSn 0.99 Sb 0.01

Abstract

Thermoelectric properties of nanostructured half-Heusler Hf0.25Zr0.75NiSn0.99Sb0.01 were characterized before and after 2.5 MeV proton irradiation. A unique high-sensitivity scanning thermal microprobe was used to simultaneously map the irradiation effect on thermal conductivity and Seebeck coefficient with spatial resolution less than 2 μm. The thermal conductivity profile along the depth from the irradiated surface shows excellent agreement with the irradiation-induced damage profile from simulation. The Seebeck coefficient was unaffected while both electrical and thermal conductivities decreased by 24%, resulting in no change in thermoelectric figure of merit ZT. Reductions in thermal and electrical conductivities are attributed to irradiation-induced defects that act as scattering sources for phonons and charge carriers.

Authors:
 [1]; ORCiD logo [2]; ORCiD logo [2];  [3]; ORCiD logo [3];  [4];  [5];  [5];  [5];  [1]
  1. Department of Aerospace and Mechanical Engineering, University of Notre Dame, Notre Dame, Indiana 46556, USA
  2. Micron School of Materials Science and Engineering, Boise State University, Boise, Idaho 83725-2090, USA
  3. Department of Nuclear Engineering, Texas A&,M University, College Station, Texas 77843-3128, USA
  4. College of Mines and Earth Sciences, University of Utah, Salt Lake City, Utah 84112, USA
  5. Department of Physics and the Texas Center for Superconductivity, University of Houston, Houston, Texas 77204, USA
Publication Date:
Research Org.:
Boise State Univ., ID (United States)
Sponsoring Org.:
USDOE Office of Nuclear Energy (NE)
OSTI Identifier:
1540182
Alternate Identifier(s):
OSTI ID: 1454357
Grant/Contract Number:  
NE0008255; NE0000124
Resource Type:
Accepted Manuscript
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 112; Journal Issue: 24; Journal ID: ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
Physics

Citation Formats

Kempf, Nicholas, Karthik, Chinnathambi, Jaques, Brian J., Gigax, Jonathan, Shao, Lin, Butt, Darryl P., He, Ran, Wang, Dezhi, Ren, Zhifeng, and Zhang, Yanliang. Proton irradiation effect on thermoelectric properties of nanostructured n-type half-Heusler Hf 0.25 Zr 0.75 NiSn 0.99 Sb 0.01. United States: N. p., 2018. Web. doi:10.1063/1.5025071.
Kempf, Nicholas, Karthik, Chinnathambi, Jaques, Brian J., Gigax, Jonathan, Shao, Lin, Butt, Darryl P., He, Ran, Wang, Dezhi, Ren, Zhifeng, & Zhang, Yanliang. Proton irradiation effect on thermoelectric properties of nanostructured n-type half-Heusler Hf 0.25 Zr 0.75 NiSn 0.99 Sb 0.01. United States. doi:10.1063/1.5025071.
Kempf, Nicholas, Karthik, Chinnathambi, Jaques, Brian J., Gigax, Jonathan, Shao, Lin, Butt, Darryl P., He, Ran, Wang, Dezhi, Ren, Zhifeng, and Zhang, Yanliang. Mon . "Proton irradiation effect on thermoelectric properties of nanostructured n-type half-Heusler Hf 0.25 Zr 0.75 NiSn 0.99 Sb 0.01". United States. doi:10.1063/1.5025071. https://www.osti.gov/servlets/purl/1540182.
@article{osti_1540182,
title = {Proton irradiation effect on thermoelectric properties of nanostructured n-type half-Heusler Hf 0.25 Zr 0.75 NiSn 0.99 Sb 0.01},
author = {Kempf, Nicholas and Karthik, Chinnathambi and Jaques, Brian J. and Gigax, Jonathan and Shao, Lin and Butt, Darryl P. and He, Ran and Wang, Dezhi and Ren, Zhifeng and Zhang, Yanliang},
abstractNote = {Thermoelectric properties of nanostructured half-Heusler Hf0.25Zr0.75NiSn0.99Sb0.01 were characterized before and after 2.5 MeV proton irradiation. A unique high-sensitivity scanning thermal microprobe was used to simultaneously map the irradiation effect on thermal conductivity and Seebeck coefficient with spatial resolution less than 2 μm. The thermal conductivity profile along the depth from the irradiated surface shows excellent agreement with the irradiation-induced damage profile from simulation. The Seebeck coefficient was unaffected while both electrical and thermal conductivities decreased by 24%, resulting in no change in thermoelectric figure of merit ZT. Reductions in thermal and electrical conductivities are attributed to irradiation-induced defects that act as scattering sources for phonons and charge carriers.},
doi = {10.1063/1.5025071},
journal = {Applied Physics Letters},
number = 24,
volume = 112,
place = {United States},
year = {2018},
month = {6}
}

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Works referenced in this record:

Enhancement in Thermoelectric Figure-Of-Merit of an N-Type Half-Heusler Compound by the Nanocomposite Approach
journal, May 2011

  • Joshi, Giri; Yan, Xiao; Wang, Hengzhi
  • Advanced Energy Materials, Vol. 1, Issue 4, p. 643-647
  • DOI: 10.1002/aenm.201100126

Complex thermoelectric materials
journal, February 2008

  • Snyder, G. Jeffrey; Toberer, Eric S.
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