Influence of oxygen partial pressure on the synthesis of barium yttrium copper oxide (Ba2YCu3O7) from a novel oxalate precursor

1989 ◽  
Vol 1 (6) ◽  
pp. 659-664 ◽  
Author(s):  
P. K. Gallagher ◽  
D. A. Fleming
Keyword(s):  
Oxygen Partial Pressure ◽  
Copper Oxide ◽  
Partial Pressure ◽  
Oxalate Precursor ◽  
Barium Yttrium Copper Oxide ◽  
Barium Yttrium ◽  
Yttrium Copper Oxide

Barium Yttrium Copper Oxide Crystals

2007 ◽  
pp. 210-218
Author(s):  
L. F. Schneemeyer ◽  
J. V. Waszczak ◽  
R. B. Van Dover ◽  
T. A. Vanderah
Keyword(s):  
Copper Oxide ◽  
Barium Yttrium Copper Oxide ◽  
Oxide Crystals ◽  
Barium Yttrium ◽  
Yttrium Copper Oxide

Iron Manganites Synthesis by the Soft Chemistry Method

2001 ◽  
Vol 674 ◽  
Author(s):  
Herve Coradin ◽  
Sophie Guillemet-Fritsch ◽  
Fabrice Agnoli ◽  
Philippe Tailhades ◽  
Abel Rousset
Keyword(s):  
Low Temperature ◽  
Oxygen Partial Pressure ◽  
Partial Pressure ◽  
Mixed Valence ◽  
High Specific Surface Area ◽  
Soft Chemistry ◽  
Oxalate Precursor ◽  
Chemistry Method ◽  
Phase Spinel ◽  
Precursor Powders

ABSTRACTThe iron manganites FexMn(3−x)O4 synthesis by soft chemistry method have been studied. The main difficulty is to obtain single phase spinel with high Mn content (0.4< x < 1.3). Oxalate precursor powders of these materials with controlled shape and nanoscopic size have been prepared. The precursors are then heat treated with a H2/H2O/N2 gas mixture at low temperature. The resulting stoechiometric spinels are metastable phases with high specific surface area and are highly reactive toward oxygen. Therefore, these oxide can be oxidized in air at low temperature in order to produce mixed valence defect manganites FexMn(3−x)O4+δ with a good reproducibility on the oxygen content. Although, some problems persist for the higher Mn contents, as the oxygen partial pressure for the reduction must be controlled precisely in order to produce the stoechiometric spinel at low temperature. The development of a low temperature reduction system, with oxygen partial pressure controlled by oxygen electrochemical pumping, is in progress.

Effect of oxygen partial pressure on the tuning of copper oxide thin films by reactive sputtering for solar light driven photocatalysis

Solar Energy ◽  
2019 ◽  
Vol 187 ◽  
pp. 368-378 ◽  
Author(s):  
S. Sai Guru Srinivasan ◽  
B. Govardhanan ◽  
P. Aabel ◽  
M. Ashok ◽  
M.C. Santhosh Kumar
Keyword(s):  
Thin Films ◽  
Oxygen Partial Pressure ◽  
Copper Oxide ◽  
Partial Pressure ◽  
Reactive Sputtering ◽  
Solar Light ◽  
Oxide Thin Films ◽  
Effect Of Oxygen
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