Molecular beam synthesis and high temperature electrical properties of crystalline ceria thin films

Molecular beam synthesis and high temperature electrical properties of crystalline ceria thin films

We report on molecular beam synthesis and high temperature electrical characterization of crystalline ceria thin films. It is found that CeO2 forms a mismatched interface with Al2O3 (0001) with the orientation relation of (111) CeO2‖(0001)Al2O3 and [110] CeO2‖[12¯10]Al2O3. The electrical conductivit...

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Bibliographic Details
Published in:Applied physics letters Vol. 91; no. 22
Main Authors: Tsuchiya, Masaru, Bojarczuk, Nestor A., Ramanathan, Shriram
Format: Journal Article
Language:English
Published: 26-11-2007
Online Access:Get full text
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Summary:We report on molecular beam synthesis and high temperature electrical characterization of crystalline ceria thin films. It is found that CeO2 forms a mismatched interface with Al2O3 (0001) with the orientation relation of (111) CeO2‖(0001)Al2O3 and [110] CeO2‖[12¯10]Al2O3. The electrical conductivity was found to be 0.08S∕cm in air and independent of PO2 down to 10−16atm at 1058K. It is likely that the highly oriented nature of the film leads to altered electrical conductivity phenomena at lower oxygen partial pressures.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.2818666