Electrochemical permeability of Sr0.7(Ti,Fe)O3-δ materials

被引：54

作者：

Jurado, JR

Figueiredo, FM

Gharbage, B

Frade, JR ^{[1
]}

机构：

[1] Univ Aveiro, Dept Engn Ceram & Vidro, P-3810 Aveiro, Portugal

[2] Inst Ceram & Vidrio, Madrid, Spain

来源：

SOLID STATE IONICS | 1999年 / 118卷 / 1-2期

关键词：

strontium titanate; electrochemical permeability; ionic conductivity;

D O I：

10.1016/S0167-2738(98)00471-8

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Chemically stable Sr-0.97(Ti, Fe)O3-delta materials were prepared by a conventional solid state reaction procedure. Their transport properties were evaluated by electrochemical permeability experiments. Our results confirm that Fe additions yield SrTiO3 based materials with relatively good electronic and oxygen ion conductivities. However, the permeability experiments could not be fitted by a model behaviour derived on assuming that the ionic conductivity is independent of Po-2, and a simple power law for the p-type contribution, sigma(p) = sigma(p1)(Po-2)(1/4). (C) 1999 Elsevier Science B.V. All rights reserved.

引用

收藏

页码：89 / 97

页数：9

相关论文

共 25 条

[1] Ionic and electronic conduction in Fe and Cr doped (La,Sr)GaO3-delta [J].

Baker, RT ;

Gharbage, B ;

Marques, FMB .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1997, 144 (09) :3130-3135

[2] OPTICAL INVESTIGATION OF OXYGEN INCORPORATION IN SRTIO3 [J].

BIEGER, T ;

MAIER, J ;

WASER, R .

SOLID STATE IONICS, 1992, 53 (pt 1) :578-582

[3] KINETICS OF OXYGEN INCORPORATION IN SRTIO3 (FE-DOPED) - AN OPTICAL INVESTIGATION [J].

BIEGER, T ;

MAIER, J ;

WASER, R .

SENSORS AND ACTUATORS B-CHEMICAL, 1992, 7 (1-3) :763-768

[4] IMPORTANCE OF THE SURFACE EXCHANGE KINETICS AS RATE-LIMITING STEP IN OXYGEN PERMEATION THROUGH MIXED-CONDUCTING OXIDES [J].

BOUWMEESTER, HJM ;

KRUIDHOF, H ;

BURGGRAAF, AJ .

SOLID STATE IONICS, 1994, 72 (pt 2) :185-194

[5] PREPARATION AND PROPERTIES OF SRTIL-XFEXO3-X/20X/2 SYSTEM [J].

BRIXNER, LH .

MATERIALS RESEARCH BULLETIN, 1968, 3 (04) :299-&

[6] NON-STOICHIOMETRY IN SRTIO3 [J].

CHAN, NH ;

SHARMA, RK ;

SMYTH, DM .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1981, 128 (08) :1762-1769

[7] Partial conductivities in SrTiO3: Bulk polarization experiments, oxygen concentration cell measurements, and defect-chemical modeling [J].

Denk, I ;

Munch, W ;

Maier, J .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1995, 78 (12) :3265-3272

[8] On the accuracy of electrochemical permeability measurements [J].

Figueiredo, FM ;

Marques, FMB ;

Frade, JR .

SOLID STATE IONICS, 1998, 110 (1-2) :45-51

[9]

FLANDERMEYER BK, 1984, J AM CERAM SOC, V67, P195, DOI 10.1111/j.1151-2916.1984.tb19741.x

[10] FAST OXYGEN SENSORS BASED ON SPUTTERED STRONTIUM-TITANATE [J].

GERBLINGER, J ;

MEIXNER, H .

SENSORS AND ACTUATORS B-CHEMICAL, 1991, 4 (1-2) :99-102