Reduced thermal conductivity in nanolamellar composite comprising half-Heusler and NiAs-type phases

Ding Bang Xiong; Norihiko L. Okamoto; Haruyuki Inui

doi:10.1016/j.scriptamat.2013.07.006

Reduced thermal conductivity in nanolamellar composite comprising half-Heusler and NiAs-type phases

Ding Bang Xiong, Norihiko L. Okamoto, Haruyuki Inui

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

The major drawback of half-Heusler-based thermoelectric materials lies in their relatively high thermal conductivity. In this work, nanolaminated structures composed of the half-Heusler phase MCoSb or M(Fe_1-xNi _x)Sb and NiAs-type phase MSb (M = Ti, Zr) are fabricated by the arc-melting method. A significant reduction in the thermal conductivity is achieved due to effective phonon scattering in the nanolaminated structure, while the electrical resistivity is low enough for thermoelectric applications because of the formation of coherent interfaces.

Original language	English
Pages (from-to)	557-560
Number of pages	4
Journal	Scripta Materialia
Volume	69
Issue number	7
DOIs	https://doi.org/10.1016/j.scriptamat.2013.07.006
Publication status	Published - 2013 Oct
Externally published	Yes

Keywords

Coherent interface
Half-Heusler phase
Lamellar structure
NiAs-type phase
Thermoelectric

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

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10.1016/j.scriptamat.2013.07.006

Cite this

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title = "Reduced thermal conductivity in nanolamellar composite comprising half-Heusler and NiAs-type phases",

abstract = "The major drawback of half-Heusler-based thermoelectric materials lies in their relatively high thermal conductivity. In this work, nanolaminated structures composed of the half-Heusler phase MCoSb or M(Fe1-xNi x)Sb and NiAs-type phase MSb (M = Ti, Zr) are fabricated by the arc-melting method. A significant reduction in the thermal conductivity is achieved due to effective phonon scattering in the nanolaminated structure, while the electrical resistivity is low enough for thermoelectric applications because of the formation of coherent interfaces.",

keywords = "Coherent interface, Half-Heusler phase, Lamellar structure, NiAs-type phase, Thermoelectric",

author = "Xiong, {Ding Bang} and Okamoto, {Norihiko L.} and Haruyuki Inui",

note = "Funding Information: This work was supported by the Japan Society for the Promotion of Science (JSPS) KAKENHI (Nos. 21246101 , 22.00078 and 23760665 ) from the Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan. D.B.X. thanks the JSPS for a postdoctoral fellowship.",

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doi = "10.1016/j.scriptamat.2013.07.006",

language = "English",

volume = "69",

pages = "557--560",

journal = "Scripta Materialia",

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T1 - Reduced thermal conductivity in nanolamellar composite comprising half-Heusler and NiAs-type phases

AU - Xiong, Ding Bang

AU - Okamoto, Norihiko L.

AU - Inui, Haruyuki

N1 - Funding Information: This work was supported by the Japan Society for the Promotion of Science (JSPS) KAKENHI (Nos. 21246101 , 22.00078 and 23760665 ) from the Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan. D.B.X. thanks the JSPS for a postdoctoral fellowship.

PY - 2013/10

Y1 - 2013/10

N2 - The major drawback of half-Heusler-based thermoelectric materials lies in their relatively high thermal conductivity. In this work, nanolaminated structures composed of the half-Heusler phase MCoSb or M(Fe1-xNi x)Sb and NiAs-type phase MSb (M = Ti, Zr) are fabricated by the arc-melting method. A significant reduction in the thermal conductivity is achieved due to effective phonon scattering in the nanolaminated structure, while the electrical resistivity is low enough for thermoelectric applications because of the formation of coherent interfaces.

AB - The major drawback of half-Heusler-based thermoelectric materials lies in their relatively high thermal conductivity. In this work, nanolaminated structures composed of the half-Heusler phase MCoSb or M(Fe1-xNi x)Sb and NiAs-type phase MSb (M = Ti, Zr) are fabricated by the arc-melting method. A significant reduction in the thermal conductivity is achieved due to effective phonon scattering in the nanolaminated structure, while the electrical resistivity is low enough for thermoelectric applications because of the formation of coherent interfaces.

KW - Coherent interface

KW - Half-Heusler phase

KW - Lamellar structure

KW - NiAs-type phase

KW - Thermoelectric

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DO - 10.1016/j.scriptamat.2013.07.006

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SN - 1359-6462

VL - 69

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JO - Scripta Materialia

JF - Scripta Materialia

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ER -

Reduced thermal conductivity in nanolamellar composite comprising half-Heusler and NiAs-type phases

Abstract

Keywords

ASJC Scopus subject areas

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