%0 Journal Article
%T XPS Analysis of Ni and Oxygen in Single-Sintered SrTiO3 Multifunction Ceramic<br>
%A Qing XU
%A WEN Chen
%A Runzhang YUAN
%A <br>
%J 材料科学技术学报
%D 2001
%I 
%X XPS analyses have been performed to investigate the chemical conditions of Ni and oxygen on grain surfaces in single-sintered SrTiO3 capacitor-varistor ceramic doped with Nb2O5 and NiO. It is ascertained that Ni is in form of Ni2+ ions, which substitute for Ti4+ ions on grain surfaces during the oxidizing annealing. Moreover, it is confirmed that three kinds of chemically adsorbed oxygen such as O2-, O- and O-2(-) are formed on grain surfaces. It is proposed that these behaviors contribute greatly to the generation of multiple types of grain boundary acceptor states in the ceramic.
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=324DC3CAB22330DB19158AE0A9B7BFA5&aid=54B12702EAA05BF371F8185E47787048&yid=14E7EF987E4155E6&vid=BCA2697F357F2001&iid=94C357A881DFC066&sid=A726E84831FE609B&eid=FD207D3C5E9776FA&journal_id=1005-0302&journal_name=材料科学技术学报&referenced_num=0&reference_num=0