High temperature thermoelectric properties of delafossite-type oxides CuFe0.98M0.02O2 (M=Mg, Zn, Ni, Co, Mn, or Ti)

T. Nozaki; K. Hayashi; T. Kajitani

doi:10.1109/ICT.2007.4569449

High temperature thermoelectric properties of delafossite-type oxides CuFe_0.98M_0.02O₂ (M=Mg, Zn, Ni, Co, Mn, or Ti)

T. Nozaki, K. Hayashi, T. Kajitani

ENG - Applied Physics

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

5 Citations (Scopus)

Abstract

We have measured the electrical conductivity σ and Seebeck coefficient S of CuFe_0.98M_0.02O₂ (M=Mg, Zn, Ni, Co, Mn, or Ti) at high temperatures. The highest electrical conductivity of 30 S/cm was obtained with the Mg-doped sample above 600 K. The Seebeck coefficient of the doped samples were still high (higher than 210 μV/K). The maximum power factor P=σS²=4.1×10^-4 W/mK² at 1150 K was obtained with CuFe_0.98Mg_0.02O₂. The above results were well explained in terms of the valence states and ionic radii of the dopants. The chemical stability of the doped samples was discussed by measuring the temperature dependent power factor during the repeated cycles of heating and cooling processes.

Original language	English
Title of host publication	Proceedings ICT'07 - 26th International Conference on Thermoelectrics
Pages	167-170
Number of pages	4
DOIs	https://doi.org/10.1109/ICT.2007.4569449
Publication status	Published - 2007
Event	ICT'07 - 26th International Conference on Thermoelectrics - Jeju, Korea, Republic of Duration: 2007 Jun 3 → 2007 Jun 7

Publication series

Name	International Conference on Thermoelectrics, ICT, Proceedings

Conference

Conference	ICT'07 - 26th International Conference on Thermoelectrics
Country/Territory	Korea, Republic of
City	Jeju
Period	07/6/3 → 07/6/7

Access to Document

10.1109/ICT.2007.4569449

Cite this

Nozaki, T., Hayashi, K., & Kajitani, T. (2007). High temperature thermoelectric properties of delafossite-type oxides CuFe_0.98M_0.02O₂ (M=Mg, Zn, Ni, Co, Mn, or Ti). In Proceedings ICT'07 - 26th International Conference on Thermoelectrics (pp. 167-170). Article 4569449 (International Conference on Thermoelectrics, ICT, Proceedings). https://doi.org/10.1109/ICT.2007.4569449

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title = "High temperature thermoelectric properties of delafossite-type oxides CuFe0.98M0.02O2 (M=Mg, Zn, Ni, Co, Mn, or Ti)",

abstract = "We have measured the electrical conductivity σ and Seebeck coefficient S of CuFe0.98M0.02O2 (M=Mg, Zn, Ni, Co, Mn, or Ti) at high temperatures. The highest electrical conductivity of 30 S/cm was obtained with the Mg-doped sample above 600 K. The Seebeck coefficient of the doped samples were still high (higher than 210 μV/K). The maximum power factor P=σS2=4.1×10-4 W/mK2 at 1150 K was obtained with CuFe0.98Mg0.02O2. The above results were well explained in terms of the valence states and ionic radii of the dopants. The chemical stability of the doped samples was discussed by measuring the temperature dependent power factor during the repeated cycles of heating and cooling processes.",

author = "T. Nozaki and K. Hayashi and T. Kajitani",

year = "2007",

doi = "10.1109/ICT.2007.4569449",

language = "English",

isbn = "9781424422623",

series = "International Conference on Thermoelectrics, ICT, Proceedings",

pages = "167--170",

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note = "ICT'07 - 26th International Conference on Thermoelectrics ; Conference date: 03-06-2007 Through 07-06-2007",

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Nozaki, T, Hayashi, K & Kajitani, T 2007, High temperature thermoelectric properties of delafossite-type oxides CuFe_0.98M_0.02O₂ (M=Mg, Zn, Ni, Co, Mn, or Ti). in Proceedings ICT'07 - 26th International Conference on Thermoelectrics., 4569449, International Conference on Thermoelectrics, ICT, Proceedings, pp. 167-170, ICT'07 - 26th International Conference on Thermoelectrics, Jeju, Korea, Republic of, 07/6/3. https://doi.org/10.1109/ICT.2007.4569449

High temperature thermoelectric properties of delafossite-type oxides CuFe_0.98M_0.02O₂ (M=Mg, Zn, Ni, Co, Mn, or Ti). / Nozaki, T.; Hayashi, K.; Kajitani, T.
Proceedings ICT'07 - 26th International Conference on Thermoelectrics. 2007. p. 167-170 4569449 (International Conference on Thermoelectrics, ICT, Proceedings).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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N2 - We have measured the electrical conductivity σ and Seebeck coefficient S of CuFe0.98M0.02O2 (M=Mg, Zn, Ni, Co, Mn, or Ti) at high temperatures. The highest electrical conductivity of 30 S/cm was obtained with the Mg-doped sample above 600 K. The Seebeck coefficient of the doped samples were still high (higher than 210 μV/K). The maximum power factor P=σS2=4.1×10-4 W/mK2 at 1150 K was obtained with CuFe0.98Mg0.02O2. The above results were well explained in terms of the valence states and ionic radii of the dopants. The chemical stability of the doped samples was discussed by measuring the temperature dependent power factor during the repeated cycles of heating and cooling processes.

AB - We have measured the electrical conductivity σ and Seebeck coefficient S of CuFe0.98M0.02O2 (M=Mg, Zn, Ni, Co, Mn, or Ti) at high temperatures. The highest electrical conductivity of 30 S/cm was obtained with the Mg-doped sample above 600 K. The Seebeck coefficient of the doped samples were still high (higher than 210 μV/K). The maximum power factor P=σS2=4.1×10-4 W/mK2 at 1150 K was obtained with CuFe0.98Mg0.02O2. The above results were well explained in terms of the valence states and ionic radii of the dopants. The chemical stability of the doped samples was discussed by measuring the temperature dependent power factor during the repeated cycles of heating and cooling processes.

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