CHEN Song TANG Yu WANG Xuanli HANG Yanling HUANG Yuyang DENG Wen. Positron annihilation study on microstructure and thermoelectric properties of Fe-doped CuAlO2[J]. Nuclear techniques, 2010, 33(7): 517-521.
CHEN Song TANG Yu WANG Xuanli HANG Yanling HUANG Yuyang DENG Wen. Positron annihilation study on microstructure and thermoelectric properties of Fe-doped CuAlO2[J]. Nuclear techniques, 2010, 33(7): 517-521.DOI:
positron lifetime and its coincidence Doppler broadening spectra for the samples of CuAl1-xFexO2(0≤x≤0.20) were performed.The results show that doping the CuAlO2 with small amount of Fe(x≤0.10) enhances the 3d electron signals of positron coincidence Doppler broadening spectra of the sample
and reduces the S parameter and mean lifetime of the positrons
and resistivity of the sample as well
whereas for x>0.10
the S parameter
and lifetime of positron
and the sample resistivity
increase with the Fe contents
but the 3d electron signal decreases with increasing Fe contents.The Seebeck coefficients of CuAl1-xFexO2 at room temperature increase with defect concentration.The Fe dopant effects on microstructure and thermoelectric properties of CuAlO2 are discussed.