%0 Journal Article
%T Synthesis and Conducting Properties of La9(SiO4)6-x(VO4)xO1.5+0.5x<br>La9(SiO4)6-x(VO4)xO1.5+0.5x的合成及其导电性能的研究
%A WANG Gui-Ling
%A ZHANG Mi-Lin
%A ZHAO Hui
%A HUO Li-Hua
%A SUN Li-Ping
%A <br>王贵领
%A 张密林
%A 赵辉
%A 霍丽华
%A 孙丽萍
%J 无机材料学报
%D 2006
%I Science Press
%X The V-doped silicate oxyapatites La9(SiO4)6-x(VO4)xO1.5+0.5x (x=0, 0.5 and 1) were synthesized successfully via a sol-gel method at 800circC. The apatite phases were characterized by X-ray diffraction (XRD). Conducting properties were studied by electrochemical impedance spectroscopy (EIS). It is found that the conductivities are influenced by increasing vanadium content, the conductivity of La9(SiO4)5(VO4)O2 is 5.23×times 10-3S·cm-1 at 700circC, it is about 5 times higher than La9(SiO4)6O1.5. The electrical conductivity of La9(SiO4)6O1.5 is almost independent of the oxygen partial pressure from 105 to 1Pa, but that of La9(SiO4)_5(VO4)O2 is minor increased. This result may indicate n-type electron conduction generated in the vanadium doped system.
%K sol-gel method
%K oxyapatite
%K interstitial oxygen ion conduction
%K electrochemical impedance spectroscopy (EIS)<br>溶胶-凝胶法
%K 氧基磷灰石
%K 间隙氧传导
%K 电化学阻抗谱
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=ABC0063016AF57E1C73EF43C8D2212BD&aid=9153BE8A9156476F&yid=37904DC365DD7266&vid=659D3B06EBF534A7&iid=94C357A881DFC066&sid=A35E3FD659BF2630&eid=D45398EB9ED445AA&journal_id=1000-324X&journal_name=无机材料学报&referenced_num=0&reference_num=16