Work

Synthesis and Thermoelectric Properties of Magneticallyc-Axis-Oriented [Ca2CoO3-δ]0.62CoO2Bulk with Various Oxygen Contents

Year: 2003

Type: article

Abstract: We report the preparation of highly grain-aligned and densified [Ca 2 CoO 3-δ ] 0.62 CoO 2 bulks and their high thermoelectric performance. The highly c -axis aligned ( F =0.94) and densified samples with low resistivity at room temperature (∼5 mΩ·cm) were obtained by the combination of magnetic alignment and spark-plasma-sintering (SPS) methods. Resistivity ρ and Seebeck coefficient S along the a b plane were systematically changed with oxygen content and, consequently, a power factor (= S 2 /ρ) was enhanced up to 3.5 × 10 -6 W·cm -1 ·K -2 at 300 K for the sample annealed at 500°C in air.

Source: Japanese Journal of Applied Physics

DOI: 10.1143/jjap.42.l198

Authors: Mitsuhiro Sano, Shigeru Horii, Ichiro Matsubara, Ryoji Funahashi, Masahiro Shikano, Jun-ichi Shimoyama, Kohji Kishio

Institutions: The University of Tokyo, National Institute of Advanced Industrial Science and Technology, Japan Science and Technology Agency

Language: English

Topic: Advanced Thermoelectric Materials and Devices

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: bronze

Funders: Japan Science and Technology Corporation, Japan Society for the Promotion of Science

OpenAlex ID: W2070865893

FWCI: 3.875

Cites: 1

Cited by: 42

Related to: 10