%0 Journal Article %1 porat1994defect %A Porat, O %A Riess, I %D 1994 %J Solid State Ionics %K cu2yo defect %N 3–4 %P 229 - 238 %R 10.1016/0167-2738(94)90215-1 %T Defect chemistry of Cu2−yO at elevated temperatures. Part I: Non-stoichiometry, phase width and dominant point defects %U http://www.sciencedirect.com/science/article/pii/0167273894902151 %V 74 %X The deviation from stoichiometry in Cu2−yO was measured as a function of oxygen partial pressure, 10−13≤PO2≤0.1 atm, and temperature, 873≤T≤1245 K, using a solid state electrochemical method. The measurements covered the whole width of the phase Cu2−yO for the temperature range 873≤T≤1245 K. The y−PO2−T relations are analyzed in order to identify the dominant point defects. It is found that in the high PO2 range of the phase, the dominant defects are neutral copper vacancies, VxCu. In the low PO2 range there are two types of defects, dominating at different temperatures. At low temperatures the dominant defects are neutral copper interstitials, Cuxi. The analysis indicates that at temperatures higher than 1245 K the dominant defects are oxygen vacancies, VxO. The enthalpy and entropy for the formation of VCux and Cuix are also determined.

@article{porat1994defect, abstract = {The deviation from stoichiometry in Cu2−yO was measured as a function of oxygen partial pressure, 10−13≤PO2≤0.1 atm, and temperature, 873≤T≤1245 K, using a solid state electrochemical method. The measurements covered the whole width of the phase Cu2−yO for the temperature range 873≤T≤1245 K. The y−PO2−T relations are analyzed in order to identify the dominant point defects. It is found that in the high PO2 range of the phase, the dominant defects are neutral copper vacancies, VxCu. In the low PO2 range there are two types of defects, dominating at different temperatures. At low temperatures the dominant defects are neutral copper interstitials, Cuxi. The analysis indicates that at temperatures higher than 1245 K the dominant defects are oxygen vacancies, VxO. The enthalpy and entropy for the formation of VCux and Cuix are also determined.}, added-at = {2012-11-28T04:31:54.000+0100}, author = {Porat, O and Riess, I}, biburl = {https://www.bibsonomy.org/bibtex/23dc570e4a200c52f4ca4056f87fbaaf9/ddarvish}, description = {ScienceDirect.com - Solid State Ionics - Defect chemistry of Cu2−yO at elevated temperatures. Part I: Non-stoichiometry, phase width and dominant point defects}, doi = {10.1016/0167-2738(94)90215-1}, interhash = {7ea42c65f453cb90c53d80f6d3037d5b}, intrahash = {3dc570e4a200c52f4ca4056f87fbaaf9}, issn = {0167-2738}, journal = {Solid State Ionics}, keywords = {cu2yo defect}, number = {3–4}, pages = {229 - 238}, timestamp = {2012-11-28T04:31:54.000+0100}, title = {Defect chemistry of Cu2−yO at elevated temperatures. Part I: Non-stoichiometry, phase width and dominant point defects}, url = {http://www.sciencedirect.com/science/article/pii/0167273894902151}, volume = 74, year = 1994 }