Effects of NiobiumDoping on the Structure and Electrical Properties of (Ba,Bi,Na)TiO3-based PTCR Ceramics
LI Yan-Yan,LI Guo-Rong,WANG Tian-Bao,ZHENG Liao-Ying,LENG Sen-Lin,YIN Qing-Rui
Journal of Inorganic Materials . 2009, (2): 374 -378 .  DOI: 10.3724/SP.J.1077.2009.00374