Fabrication of multilayered oxide thermoelectric modules by electrophoretic deposition under high magnetic fields

Taichi Okamoto, Shigeru Horii, Tetsuo Uchikoshi, Tohru S. Suzuki, Yoshio Sakka, Ryoji Funahashi, Naoko Ando, Masayuki Sakurai, Jun Ichi Shimoyama, Kohji Kishio

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30 Citations (Scopus)

Abstract

The authors report the fabrication of grain-aligned [Ca2CoO 3-δ]0.62CoO2 (Ca349) thick films and a multilayered thermoelectric unicouple of Ca349 and Ca0.9La 0.1MnO3-δ (Mn113) using electrophoretic deposition (EPD) and magnetic alignment methods. Strongly c-axis-oriented Ca349 thick films were obtained by EPD performed under magnetic fields. In addition, the c axis of grains was found to always align parallel to the direction of field, independently of the EPD cell configuration. The required conditions for magnetic grain alignment of fine Ca349 powders were quantitatively discussed based on magnetization anisotropy. An α-Al2O 3/Mn113/α-Al2O3/Ca349/α-Al 2O3 multilayered thick film was successfully developed.

Original languageEnglish
Article number081912
JournalApplied Physics Letters
Volume89
Issue number8
DOIs
Publication statusPublished - 2006 Aug 31
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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    Okamoto, T., Horii, S., Uchikoshi, T., Suzuki, T. S., Sakka, Y., Funahashi, R., Ando, N., Sakurai, M., Shimoyama, J. I., & Kishio, K. (2006). Fabrication of multilayered oxide thermoelectric modules by electrophoretic deposition under high magnetic fields. Applied Physics Letters, 89(8), [081912]. https://doi.org/10.1063/1.2338749