Thermoelectric Properties of Cu-Substituted Bi2Ca2Co2Oy Misfit Oxides
β Scribed by Hao, Hao Shan; He, Qing Lin; Zhao, Li Min
- Book ID
- 120401512
- Publisher
- Trans Tech Publications, Ltd.
- Year
- 2011
- Tongue
- English
- Weight
- 491 KB
- Volume
- 284-286
- Category
- Article
- ISSN
- 1662-8958
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π SIMILAR VOLUMES
Layered misfit cobaltite Bi 2 Ca 2.4 Co 2 O y has been synthesized by a sol-gel method. This compound exhibits large thermoelectric (TE) power (S 300 K $ 170 mV K Γ 1 ), low resistivity (r 300 K $ 42 mO cm) and relatively small thermal conductivity (k 300 K $ 2.8 W K Γ 1 m Γ 1 ) at room temperature.
Transport properties of Bi2\_xPbxCa2Sr2Cu30y (x=0, 0.2, 0.4 and 0.6) were investigated by means of measuring Hall coefficient between Tc up Β£o 300K. The experimental results show that the carrier density n H is linearly T-dependent, e.g. the formula nx(T)=n o (l+aT) is well satlsified in normal sta