Thermoelectric properties of Sr0.61Ba0.39Nb2O6− δ ceramics in different oxygen-reduction conditions*
Li Yia), Liu Jiana),b)†, Wang Chun-Leia),b), Su Wen-Bina),b), Zhu Yuan-Hua), Li Ji-Chaoa),b), Mei Liang-Moa),b)
       
The SEM micrographs (2000×) of samples SBN61Ar (a) and SBN61H1250 (b).