This title appears in the Scientific Report :
2020
Please use the identifier:
http://dx.doi.org/10.1016/j.scriptamat.2020.01.007 in citations.
Please use the identifier: http://hdl.handle.net/2128/24316 in citations.
Electronic conductivity in gadolinium doped ceria under direct current as a trigger for flash sintering
Electronic conductivity in gadolinium doped ceria under direct current as a trigger for flash sintering
In this paper, we discuss the progression of flash sintering in 10mol% gadolinium-doped ceria specimens. Flash transition is correlated with the generation of n-type electronic conductivity in air under direct-current bias. Its origin is attributed to partial reduction of the material which propagat...
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Personal Name(s): | Mishra, Tarini Prasad (Corresponding author) |
---|---|
Neto, Rubens Roberto Ingraci / Speranza, Giorgio / Quaranta, Alberto / Sglavo, Vincenzo M. / Raj, Rishi / Guillon, Olivier / Bram, Martin / Biesuz, Mattia (Corresponding author) | |
Contributing Institute: |
Werkstoffsynthese und Herstellungsverfahren; IEK-1 |
Published in: | Scripta materialia, 179 (2020) S. 55 - 60 |
Imprint: |
Amsterdam [u.a.]
Elsevier Science
2020
|
DOI: |
10.1016/j.scriptamat.2020.01.007 |
Document Type: |
Journal Article |
Research Program: |
SPP 1959: Manipulation of matter controlled by electric and magnetic fields: Towards novel synthesis and processing routes of inorganic materials ohne Topic |
Link: |
Published on 2020-01-20. Available in OpenAccess from 2022-01-20. Published on 2020-01-20. Available in OpenAccess from 2022-01-20. |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/24316 in citations.
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520 | |a In this paper, we discuss the progression of flash sintering in 10mol% gadolinium-doped ceria specimens. Flash transition is correlated with the generation of n-type electronic conductivity in air under direct-current bias. Its origin is attributed to partial reduction of the material which propagates from the cathodic-to-anodic region. The phenomenon was observed, in-situ, by monitoring the development of electrochemical blackening during the incubation period of the flash-experiment. Anomalous features, including shift in the valence band edge, shrinkage of the band-gap and change in the oxidation state of Ce in flashed samples was confirmed by X-ray photoelectron spectroscopy and diffuse reflectance measurements. | ||
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