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3000 2500 2000 1500 1000 500 794 792 790 788 786 Binding Energy (eV) 1000 950 900 850 800 750 700 650 475 470 465 460 Binding Energy (eV) 455 450 4000 3500 3000 2500 2000 1500 1000 2500 2000 1500 1000 500 784 782 780 778 776 774 772 Figure 4.18: XPS spectra of Ba 3d (left) and Ti 2p (right) finger print regions of sample BT5. Ba is present, however Ti is not. Deposited from supercritical H2O/EtOH at 290 oC with a 0.01 M propoxide concentration and a H2O/Ti molar ratio of 500. 500 0 546 544 542 540 538 536 534 532 530 528 526 524 Binding Energy (eV) 298 296 294 292 290 288 286 284 282 Binding Energy (eV) 280 278 Figure 4.19: XPS spectra of O 1s (left) and C 1s (right) finger print regions of sample BT6. Both C and O are present in high concentration confirming the formation of BaCO3. Deposited from supercritical H2O/EtOH at 290 oC with a 0.01 M propoxide concentration and a H2O/Ti molar ratio of 100. 4.2.3.3 Conclusions The method for single step synthesis of BaTiO3 powders is modified to attempt BaTiO3 film deposition from supercritical ethanol/water solutions. Two studies are performed in order to analyze their ability to induce BaTiO3 film formation in this new process. Both the water ratio, which controls BaTiO3 crystallinity, and the propoxide molality, used in precursor synthesis, are tested and found to have no affect on the ability 110 c/s c/s c/s c/sPDF Image | Supercritical Fluid Deposition Of Thin Metal Films
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