%0 Journal Article
%T Structure and Property of Y and YF3 Doped Barium Titanate<br>Y和YF3掺杂钛酸钡系PTCR材料的结构及性能
%A HUANG Chuan-Yong
%A TANG Zi-Long
%A ZHANG Zhong-Tai
%A <br>黄传勇
%A 唐子龙
%A 张中太
%J 无机材料学报
%D 2000
%I Science Press
%X Positive Temperature Coefficient of Resistivity (PTCR) materials based on Yttrium and Yttrium Fluoride (YF3) doped Barium titanate (BaTiO3) ceramics were prepared in different sintering atmospheres, respectively. The effects of sintering atmospheres on the microstructure, property and mechanism of substitution of doped BaTiO3 ceramics were investigated by the means of XRD, SEM, XRF and R-T measuring instrument. Sintering in a low oxygen partial atmosphere can increase the densities of Y and YF3 doped BaTiO3 and make grain particle grow. Both Y and YF3 doped BaTiO3 ceramics are n-type semiconductor in which Y substitutes A-site and F substitutes O-site. Sintered in a argon atmosphere, Y doped BaTiO3 exhibited little PTCR effect, however, an anomalous PTCR effect was observed when 0.3mol% YF3doped BaTiO3 ceramics was fired in Argon atmosphere. This phenomenon may be explained by a new O site substitution mechanism.
%K barium titanate
%K PTCR effect
%K sintering atmosphere
%K substitution<br>钛酸钡
%K PTCR效应
%K 烧结
%K 结构
%K 铁电陶瓷
%K 掺杂
%K 钇
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=ABC0063016AF57E1C73EF43C8D2212BD&aid=8648E11605828207&yid=9806D0D4EAA9BED3&vid=23CCDDCD68FFCC2F&iid=E158A972A605785F&sid=09F7C8D609E885AE&eid=A7379F6713A46835&journal_id=1000-324X&journal_name=无机材料学报&referenced_num=1&reference_num=10