Spin-current-driven thermoelectric coating

Akihiro Kirihara; Ken Ichi Uchida; Yosuke Kajiwara; Masahiko Ishida; Yasunobu Nakamura; Takashi Manako; Eiji Saitoh; Shinichi Yorozu

doi:10.1038/nmat3360

Spin-current-driven thermoelectric coating

Akihiro Kirihara, Ken Ichi Uchida, Yosuke Kajiwara, Masahiko Ishida, Yasunobu Nakamura, Takashi Manako, Eiji Saitoh, Shinichi Yorozu

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

241 Citations (Scopus)

Abstract

Energy harvesting technologies, which generate electricity from environmental energy, have been attracting great interest because of their potential to power ubiquitously deployed sensor networks and mobile electronics. Of these technologies, thermoelectric (TE) conversion is a particularly promising candidate, because it can directly generate electricity from the thermal energy that is available in various places. Here we show a novel TE concept based on the spin Seebeck effect, called 'spin-thermoelectric (STE) coating', which is characterized by a simple film structure, convenient scaling capability, and easy fabrication. The STE coating, with a 60-nm-thick bismuth-substituted yttrium iron garnet (Bi:YIG) film, is applied by means of a highly efficient process on a non-magnetic substrate. Notably, spin-current-driven TE conversion is successfully demonstrated under a temperature gradient perpendicular to such an ultrathin STE-coating layer (amounting to only 0.01% of the total sample thickness). We also show that the STE coating is applicable even on glass surfaces with amorphous structures. Such a versatile implementation of the TE function may pave the way for novel applications making full use of omnipresent heat.

Original language	English
Pages (from-to)	686-689
Number of pages	4
Journal	Nature Materials
Volume	11
Issue number	8
DOIs	https://doi.org/10.1038/nmat3360
Publication status	Published - 2012 Aug

ASJC Scopus subject areas

Chemistry(all)
Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1038/nmat3360

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@article{552bd6d33cdc498fa7eb347400a3f630,

title = "Spin-current-driven thermoelectric coating",

abstract = "Energy harvesting technologies, which generate electricity from environmental energy, have been attracting great interest because of their potential to power ubiquitously deployed sensor networks and mobile electronics. Of these technologies, thermoelectric (TE) conversion is a particularly promising candidate, because it can directly generate electricity from the thermal energy that is available in various places. Here we show a novel TE concept based on the spin Seebeck effect, called 'spin-thermoelectric (STE) coating', which is characterized by a simple film structure, convenient scaling capability, and easy fabrication. The STE coating, with a 60-nm-thick bismuth-substituted yttrium iron garnet (Bi:YIG) film, is applied by means of a highly efficient process on a non-magnetic substrate. Notably, spin-current-driven TE conversion is successfully demonstrated under a temperature gradient perpendicular to such an ultrathin STE-coating layer (amounting to only 0.01% of the total sample thickness). We also show that the STE coating is applicable even on glass surfaces with amorphous structures. Such a versatile implementation of the TE function may pave the way for novel applications making full use of omnipresent heat.",

author = "Akihiro Kirihara and Uchida, {Ken Ichi} and Yosuke Kajiwara and Masahiko Ishida and Yasunobu Nakamura and Takashi Manako and Eiji Saitoh and Shinichi Yorozu",

note = "Funding Information: The authors thank G. E. W. Bauer, S. Maekawa, H. Adachi, J. P. Heremans and S. Kohmoto for valuable discussions. This work was supported by a Grant-in-Aid for Scientific Research A (21244058) from MEXT, Japan, the global COE for the {\textquoteleft}Materials Integration International Centre of Education and Research{\textquoteright} from MEXT, Japan, and CREST-JST {\textquoteleft}Creation of Nanosystems with Novel Functions through Process Integration{\textquoteright}, Japan.",

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doi = "10.1038/nmat3360",

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AU - Kirihara, Akihiro

AU - Uchida, Ken Ichi

AU - Kajiwara, Yosuke

AU - Ishida, Masahiko

AU - Nakamura, Yasunobu

AU - Manako, Takashi

AU - Saitoh, Eiji

AU - Yorozu, Shinichi

N1 - Funding Information: The authors thank G. E. W. Bauer, S. Maekawa, H. Adachi, J. P. Heremans and S. Kohmoto for valuable discussions. This work was supported by a Grant-in-Aid for Scientific Research A (21244058) from MEXT, Japan, the global COE for the ‘Materials Integration International Centre of Education and Research’ from MEXT, Japan, and CREST-JST ‘Creation of Nanosystems with Novel Functions through Process Integration’, Japan.

PY - 2012/8

Y1 - 2012/8

N2 - Energy harvesting technologies, which generate electricity from environmental energy, have been attracting great interest because of their potential to power ubiquitously deployed sensor networks and mobile electronics. Of these technologies, thermoelectric (TE) conversion is a particularly promising candidate, because it can directly generate electricity from the thermal energy that is available in various places. Here we show a novel TE concept based on the spin Seebeck effect, called 'spin-thermoelectric (STE) coating', which is characterized by a simple film structure, convenient scaling capability, and easy fabrication. The STE coating, with a 60-nm-thick bismuth-substituted yttrium iron garnet (Bi:YIG) film, is applied by means of a highly efficient process on a non-magnetic substrate. Notably, spin-current-driven TE conversion is successfully demonstrated under a temperature gradient perpendicular to such an ultrathin STE-coating layer (amounting to only 0.01% of the total sample thickness). We also show that the STE coating is applicable even on glass surfaces with amorphous structures. Such a versatile implementation of the TE function may pave the way for novel applications making full use of omnipresent heat.

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Spin-current-driven thermoelectric coating

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