Electrochemical potential gradients in Pb(Zr,Ti)O 3 thin films

M. Brazier, Said Mansour, M. McElfresh

Research output: Chapter in Book/Report/Conference proceedingChapter

4 Citations (Scopus)

Abstract

Thin film PbZr 0.55Ti 0.45O 3 (PZT) capacitors were observed to develop a dc voltage offset when driven with an ac applied electric field. This voltage offset displayed a strong dependence on the ambient oxygen partial pressure, pO 2, of the atmosphere above the film, in addition to applied electric field and temperature dependencies. A scenario is proposed wherein a chemical potential gradient is established in the film, the magnitude of which is determined by the ambient pO 2. The subsequent redistribution of oxygen vacancies is thought to create the observed voltage offset. This hypothesis was supported by the observation of similar voltage offsets in compositionally graded PZT films. This effect shows promise for novel low-temperature oxygen sensing applications.

Original languageEnglish
Title of host publicationMaterials Research Society Symposium - Proceedings
PublisherMaterials Research Society
Pages507-510
Number of pages4
Volume541
Publication statusPublished - 1999
Externally publishedYes
EventProceedings of the 1998 MRS Fall Meeting - The Symposium 'Advanced Catalytic Materials-1998' - Boston, MA, USA
Duration: 30 Nov 19983 Dec 1998

Other

OtherProceedings of the 1998 MRS Fall Meeting - The Symposium 'Advanced Catalytic Materials-1998'
CityBoston, MA, USA
Period30/11/983/12/98

Fingerprint

Thin films
Electric potential
Electric fields
Oxygen
Chemical potential
Oxygen vacancies
Partial pressure
Capacitors
Temperature

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

Cite this

Brazier, M., Mansour, S., & McElfresh, M. (1999). Electrochemical potential gradients in Pb(Zr,Ti)O 3 thin films In Materials Research Society Symposium - Proceedings (Vol. 541, pp. 507-510). Materials Research Society.

Electrochemical potential gradients in Pb(Zr,Ti)O 3 thin films . / Brazier, M.; Mansour, Said; McElfresh, M.

Materials Research Society Symposium - Proceedings. Vol. 541 Materials Research Society, 1999. p. 507-510.

Research output: Chapter in Book/Report/Conference proceedingChapter

Brazier, M, Mansour, S & McElfresh, M 1999, Electrochemical potential gradients in Pb(Zr,Ti)O 3 thin films in Materials Research Society Symposium - Proceedings. vol. 541, Materials Research Society, pp. 507-510, Proceedings of the 1998 MRS Fall Meeting - The Symposium 'Advanced Catalytic Materials-1998', Boston, MA, USA, 30/11/98.
Brazier M, Mansour S, McElfresh M. Electrochemical potential gradients in Pb(Zr,Ti)O 3 thin films In Materials Research Society Symposium - Proceedings. Vol. 541. Materials Research Society. 1999. p. 507-510
Brazier, M. ; Mansour, Said ; McElfresh, M. / Electrochemical potential gradients in Pb(Zr,Ti)O 3 thin films Materials Research Society Symposium - Proceedings. Vol. 541 Materials Research Society, 1999. pp. 507-510
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