Preparation of (La0.8Sr0.2)2FeNiO6-Δ Nanopowder by Pechini Method and Its Sensitivity to NO2Lihong Zhou, Wei Duan, Bikang Hu and Jianzhong XiaoMATEC Web Conf., 175 (2018) 01034DOI: https://doi.org/10.1051/matecconf/201817501034