摘要
利用Ｈ２／Ｈ２Ｏ体系控制氧分压，采用四电极法测量了掺杂ＳｒＬｉ１／４Ｎｂ３／４Ｏ３的ＳｒＴｉＯ３瓷体在８００～１２００℃，ＰＯ２＝１０－１５～１０５Ｐａ下的电导率，当ｐ＜１００Ｐａ，σ∝Ｐ－１／８Ｏ２；ｐＯ２≥１００Ｐａ，电导率随ｐＯ２变化较为平缓．
Oxygen pressure was obtained by H 2/H 2O system. Four point d-c techniture was used to measure the conductivity(σ) of SrTiO 3 doped with SrLi 1/4 Nb 3/4 O 3 at temperature 800～1200℃ and oxygen pressure p o 2 =10 -15 ～10 5 Pa. On the figure of lg( p o 2 /10 5Pa)-lg( σ /Ω -1 ·cm -1 ),p o 2 <10 0 Pa,σ∝p -1/8 o 2 ; p o 2 ≥10 0 Pa,the change of conductivity is not apparent. The oxygen-sensing properties of SrTiO 3-based materials is discussed.
出处
《云南大学学报（自然科学版）》
CAS
CSCD
1997年第2期153-156,共4页
Journal of Yunnan University(Natural Sciences Edition)
