Thermoelectric property studies on bulk TiO x with x from 1 to 2

Qinyu He, Qing Hao, Gang Chen, Bed Poudel, Xiaowei Wang, Dezhi Wang, Zhifeng Ren

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Abstract

100% dense bulk Ti Ox samples have been made by first oxidizing TiO and then direct current induced hot press. It was found that the Seebeck coefficients are negative at room temperature and change to positive at higher temperature for 1<x<1.25, positive at room temperature and change to negative at higher temperature for 1.25<x<53, and always negative up to 800 °C for 53<x<2. The highest achieved dimensionless figure of merit is about 0.2-0.23 for 1.83<x<1.9, about eight times lower than the reported value.

Original languageEnglish (US)
Article number052505
JournalApplied Physics Letters
Volume91
Issue number5
DOIs
Publication statusPublished - Aug 13 2007

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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