K. Yamamoto, K. Machida, Y. Oikawa, C. Kim, H. Ozaki
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引用次数: 0
Abstract
P-type thermoelectric materials based on magnetite have been obtained by cobalt substitution (CoxFe3-x-xO4 ). For x ges 1.1, Seebeck coefficient (S) was positive and showed a maximum at a temperature which shifted toward high temperature. For x les 1.0, S was negative, and for x ap 1.0, S changes its sign from positive to negative with increasing temperature. The Co content of Co1.5Fe1.5-xO4 yielded a lowest electrical resistivity of 40 mOmegacm at 973K. Effects of Ni and Co co-doping were also discussed
采用钴取代法制备了基于磁铁矿的p型热电材料(CoxFe3-x-xO4)。对于x ges 1.1，塞贝克系数(S)为正，并在温度向高温方向移动时达到最大值。对于x les 1.0, S为负，对于x ap 1.0, S的符号随着温度的升高从正变为负。Co1.5Fe1.5-xO4的Co含量在973K时电阻率最低，为40 mOmegacm。还讨论了镍和钴共掺杂的影响
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