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DOI: 10.1021/jp0606210

http://pubs.acs.org/doi/abs/10.1021/jp0606210

Article Electrical Properties and Defect Chemistry of TiO 2 Single C...

Dear Gacia thank you for adding answer.  I need electrical conductivity of both tio2 and ceo2 at room temperature.

Electrical conductivity of TiO2 depends strongly on its oxygen nonstoichiometry, i.e. oxygen activity in the gas phase during processing. Some time ago we were measuring the electrical conductivity of polycrystalline TiO2 during cooling after equilibration at high temperature (1073K - 1273K) in the gas phase of different oxygen activity. When cooling in argon (about 10Pa of oxygen activity) we could measure to about 700K only, recording conductivity in the order of 10-5 S/m, before we reach the limits of our instruments. However, we could measure without problems, down to room temperature,  the electrical conductivity of samples equilibrated in strongly reducing conditions (oxygen activity 10-10 - 10-14 Pa). Depending on the initial conditions and the rate of cooling we have obtained values between 20 S/m and 70 S/m at room temperature.

I can not comment on ceria, we have never worked with this oxide.

Regards, Tad

• Dear Tadeusz sir thank you very much for adding very much helpful answer.  and also sending the reference.
• Once again thank you sir
• and warm regards
• Suhail

Dear Tadeusz Bak sir

please send the full text of your article:

Electrical Properties and Defect Chemistry of TiO2 Single Crystal. III. Equilibration Kinetics and Chemical Diffusion†

M. K. Nowotny , T. Bak , and J. Nowotny *

Centre for Materials Research in Energy Conversion, School of Materials Science and Engineering, University of New South Wales, Sydney, NSW 2052, Australia

J. Phys. Chem. B, 2006, 110 (33), pp 16292–16301

DOI: 10.1021/jp060623k

Publication Date (Web): August 1, 2006

I dont have access to this.

Thank you sir

Warm Regards

Suhail