Journal
SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS
Volume 5, Issue 5-6, Pages 543-547Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1016/j.stam.2004.03.003
Keywords
thermoelectric; seebeck coefficient; vanadium oxide; combinatorial technology; perovskite; pulsed laser deposition; composition-spread film
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La1-xCaxVO3 composition-spread film library was fabricated by combinatorial pulsed laser deposition and their thermoelectric properties were evaluated paralelly by the multi-channel probes of Seebeck coefficient and electric conductivity. Concurrent X-ray analysis verified the formation of solid soluted films in the full composition range (0 less than or equal to x less than or equal to 1) as judged from the linear variation of the lattice constants. The Seebeck coefficients of La1-xCaxVO3 changed from a large negative value to almost zero with the increase of x, due presumably to the variation of valence in vanadium ions. The power factor in this library was as high as 0.6 muW/cm K-2, which was obtained at x = 0, i.e. pure LaVO3 grown at 800 degreesC. (C) 2004 Elsevier Ltd. All rights reserved.
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