%0 Journal Article
%T Microwave dielectric properties of Ba4.5Nd9Ti18O54 ceramics doped with PbTiO3+Bi2Ti2O7<br>PbTiO3+Bi2Ti2O7掺杂的Ba4.5Nd9Ti18O54微波介质陶瓷
%A FAzough
%A RFreer
%A <br>吕文中
%A F.Azough
%A R.Freer
%J 材料研究学报
%D 2004
%I 
%X 研究了PbTiO3 Bi2Ti2O7掺杂的Ba4.5Nd9Ti18O54微波介质陶瓷材料的结构和介电性能.结果表明,随着掺杂量的增加,陶瓷材料的密度呈现出轻微下降的趋势,介电常数则保持较高的数值,Q值及τf随掺杂量的增加而下降.当PbTiO3 Bi2Ti2O7掺杂量为20%时,材料的εr≈93,Q.f≈5800 GHz,τf≈3×10-5/℃.XRD分析表明,当PbTiO3 Bi2Ti2O7掺杂量小于24%时,Ba4.5Nd9Ti18O54材料仍呈现出单相结构.利用电介质极化理论初步解释了材料介电性能变化的原因.
%K inorganic non-metallic materials
%K Ba_(4
%K 5)Nd_9Ti_(18)O_(54) microwave ceramics
%K PbTiO_3+Bi_2Ti_2O_7 additives
%K microwave dielectric properties<br>无机非金属材料
%K Ba4.5Nd9Ti18O54微波介质陶瓷
%K PbTiO3
%K Bi2Ti2O7添加剂
%K 介电性能
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=C101C4C04993B4D94FCD8446E6CBEB3B&aid=EF7958D46B540A02&yid=D0E58B75BFD8E51C&vid=13553B2D12F347E8&iid=0B39A22176CE99FB&sid=3986B25773CB6C30&eid=856C2E13D1000DB7&journal_id=1005-3093&journal_name=材料研究学报&referenced_num=4&reference_num=14