Influence of Eu Substitution for Y on the High Temperature Electric Transport Properties of YBaCo4O7+δ
Year: 2013
Type: article
Abstract: The electric resistivity, Seebeck coefficients and power factors of Y1-xEuxBaCo4O7+δ (x = 0.0, 0.05, 0.1, 0.2) ceramics were investigated from 400K to 1000K. The results show that the presence of Eu decreases electrical resistivity, and has little effect on Seebeck coefficients of the samples. The activation energy of conductivity is calculated by the Arrhenius plots in the semiconductive region. According to power factors, the optimum Eu substitution amount is x = 0.1, which results in a higher power factor of 67.5 μWm-1K-2 at 1000K, 30% higher than unmodified sample YBaCo4O7+δ.
Source: Advanced materials research
Authors: Qing Lin He, Feng Gao, Hong Zhang Song, Xing Hu
Institution: Zhengzhou University
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W1987227385