Electrical conductivity relaxation of polycrystalline PrBaCo2O5+δ thin films

2012 ◽  
Vol 228 ◽  
pp. 14-18 ◽  
Author(s):  
Rosemary A. Cox-Galhotra ◽  
Steven McIntosh
Keyword(s):  
Thin Films ◽  
Electrical Conductivity ◽  
Conductivity Relaxation ◽  
Electrical Conductivity Relaxation

Electrical Conductivity Relaxation Study of Solid Oxide Fuel Cell Cathodes using Epitaxial (001)-Oriented Strontium-Doped Lanthanum Manganite Thin Films

2010 ◽  
Vol 1255 ◽  
Author(s):  
Lu Yan ◽  
Balasubramaniam Kavaipatti ◽  
Shanling Wang ◽  
Hui Du ◽  
Paul Salvador
Keyword(s):  
Thin Films ◽  
Electrical Conductivity ◽  
Elevated Temperatures ◽  
Reduction Process ◽  
Lanthanum Manganite ◽  
Conductivity Relaxation ◽  
Surface Exchange ◽  
Electrical Conductivity Relaxation ◽  
Crystal Films ◽  
Surface Exchange Coefficient

AbstractEpitaxial single-crystal films of La0.7Sr0.3MnO3 (100) having smooth surface morphology were deposited on SrTiO3 (100) substrates by pulsed laser deposition (PLD). Electrical conductivity relaxation (ECR) measurements were carried out at elevated temperatures over a range of absolute oxygen pressures to determine the oxygen surface exchange coefficient. Steady-state conductivity data of the thin films show good agreement with the bulk material's properties. The values of the oxygen exchange coefficients (Kchem) are found to be similar for both oxidation and reduction process between 50 and 500 mTorr O2. The activation energy (Ea) of Kchem is 1.00±0.27 eV at temperatures above 600 °C and Kchem (T=612°C)≈1.2×10-6 cm/s.

scholarly journals Untangling surface oxygen exchange effects in YBa2Cu3O6+x thin films by electrical conductivity relaxation

2017 ◽  
Vol 19 (21) ◽  
pp. 14129-14140 ◽  
Author(s):  
P. Cayado ◽  
C. F. Sánchez-Valdés ◽  
A. Stangl ◽  
M. Coll ◽  
P. Roura ◽  
...  
Keyword(s):  
Thin Films ◽  
Electrical Conductivity ◽  
Exchange Process ◽  
Bulk Diffusion ◽  
Epitaxial Thin Films ◽  
Conductivity Relaxation ◽  
Surface Exchange ◽  
Electrical Conductivity Relaxation ◽  
Relaxation Measurements ◽  
Kinetics Of

The kinetics of oxygen incorporation and excorporation in YBCO epitaxial thin films was investigated by electrical conductivity relaxation measurements showing that the oxygenation kinetics of YBCO films is limited by the surface exchange process of oxygen molecules prior to bulk diffusion into the films.

Microstructural effects on electrical conductivity relaxation in nanoscale ceria thin films

2009 ◽  
Vol 130 (17) ◽  
pp. 174711 ◽  
Author(s):  
Masaru Tsuchiya ◽  
Nestor A. Bojarczuk ◽  
Supratik Guha ◽  
Shriram Ramanathan
Keyword(s):  
Thin Films ◽  
Electrical Conductivity ◽  
Conductivity Relaxation ◽  
Electrical Conductivity Relaxation ◽  
Microstructural Effects

Electrical conductivity relaxation of Sr2Fe1.5Mo0.5O6−δ–Sm0.2Ce0.8O1.9dual-phase composites

2014 ◽  
Vol 2 (1) ◽  
pp. 136-143 ◽  
Author(s):  
Yunlong Wang ◽  
Bobing Hu ◽  
Zhuoying Zhu ◽  
Henny J. M. Bouwmeester ◽  
Changrong Xia
Keyword(s):  
Electrical Conductivity ◽  
Conductivity Relaxation ◽  
Electrical Conductivity Relaxation

An electrical conductivity relaxation study of La0.6Sr0.4Fe0.8Co0.2O3−

2003 ◽  
Vol 156 (1-2) ◽  
pp. 201-208 ◽  
Author(s):  
S Wang ◽  
P.A.W van der Heide ◽  
C Chavez ◽  
A.J Jacobson ◽  
S.B Adler
Keyword(s):  
Electrical Conductivity ◽  
Conductivity Relaxation ◽  
Electrical Conductivity Relaxation ◽  
Relaxation Study
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