![ff mod db ff mod db](https://www.researchgate.net/profile/Uwe-Baumann-2/publication/351831604/figure/fig4/AS:1027202107846656@1621915475086/Mean-SRT-Depending-on-Subject-Group-Averaged-Across-Four-Acoustic-Environments-With.png)
This study indicates the necessity of further reducing the nucleation temperature of YBCO films processed by FF-MOD routes.", Because of the different chemical reaction path compared to conventional TFA-MOD routes, it seems that the polycrystalline BaCeO3 formation takes place prior to the YBCO-Ag epitaxial growth associated with the melting process, which results in structural deterioration at high growth temperatures and, therefore, no superconductivity. Based on the structural analysis of the partially converted films, we found that interfacial reactions between the film and the CLO cap layer play an essential role on the epitaxial growth of YBCO-Ag films from the FF-MOD solution. SEM and XRD results reveal that c-axis and a/b-axis orientations coexist in the YBCO-Ag films grown on the CSD-CLO/YSZ substrate deposited by the FF-MOD route, while the BaCeO3 by-product is a dominating phase in the fully reacted film. Although conventional TFA-MOD derived YBCO films exhibit high performance on both substrates, the results vary when using the FF-MOD precursor. In this paper, a comparison study was performed on the YBCO-Ag superconducting thin films deposited on two types substrates, LaAlO3 and CSD-Ce0.9La0.1O2-y (CLO)/YSZ, respectively. This study indicates the necessity of further reducing the nucleation temperature of YBCO films processed by FF-MOD routes.Ībstract = "Recently, fluorine-free metal organic deposition routes (FF-MOD) for growth of YBCO superconducting films have attracted increased attentions.
![ff mod db ff mod db](https://media.moddb.com/images/mods/1/18/17331/vickers-b.jpg)
Because of the different chemical reaction path compared to conventional TFA-MOD routes, it seems that the polycrystalline BaCeO 3 formation takes place prior to the YBCO-Ag epitaxial growth associated with the melting process, which results in structural deterioration at high growth temperatures and, therefore, no superconductivity. SEM and XRD results reveal that c-axis and a/b-axis orientations coexist in the YBCO-Ag films grown on the CSD-CLO/YSZ substrate deposited by the FF-MOD route, while the BaCeO 3 by-product is a dominating phase in the fully reacted film. In this paper, a comparison study was performed on the YBCO-Ag superconducting thin films deposited on two types substrates, LaAlO 3 and CSD-Ce 0.9La 0.1O 2-y (CLO)/YSZ, respectively. Recently, fluorine-free metal organic deposition routes (FF-MOD) for growth of YBCO superconducting films have attracted increased attentions.