Full-Text Search:
Home|About CNKI|User Service|中文
Add to Favorite Get Latest Update

Humidity Sensitive Properties of La_(1-x)Sr_xFeO_3 Electronic Ceramics

Zhang Jingli,Lu Yuedong,Wu Guobiao and Li Biaorong (Huazhong University of Science and Technology)  
By using solid phase reaction method,perovskite-type La_(1-x)Sr_xFe_3(0≤x≤0.7)electronic ceramics were synthesized in oxygen atmosphere.Their resistance vs relativehumidity(R.H.)characteristics as well as dielectric and complex impedance spectrawere investigated.The experimental results were analyzed and discussed by non-De-bye model,and the equivalent circuit parameters were calculated.The results indi-cate that La_(1-x)Sr_xFeO_3 is a kind of n-type semiconducting ceramics,the resistanceof LaFeO_3 decreases with the increase of R.H.,on the other hand,the resistanceof La_(1-x)Sr_xFeO_3(0.1≤x≤0.3)increases with the increase of R.H.,and the humi-dity sensitivity increases with the increase of x value.
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©CNKI All Rights Reserved