Development of nanoscale inhomogeneities during drying of sol-gel derived amorphous lead zirconate titanate precursor thin films
| Autor: | Sjoerd A. Veldhuis, Wim Bras, Guy Eeckhaut, Enrico G. Keim, Johan E. ten Elshof, Tomasz M. Stawski, Dave H. A. Blank, Hessel L. Castricum |
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| Přispěvatelé: | Inorganic Materials Science |
| Rok vydání: | 2011 |
| Předmět: |
Materials science
Surface Properties Lead zirconate titanate METIS-280110 chemistry.chemical_compound Electrochemistry General Materials Science Cubic zirconia Thin film Particle Size Spectroscopy Sol-gel Titanium Electron energy loss spectroscopy Membranes Artificial Surfaces and Interfaces Condensed Matter Physics Amorphous solid Nanostructures chemistry Chemical engineering Lead Transmission electron microscopy Zirconium Selected area diffraction Gels |
| Zdroj: | Langmuir Langmuir, 27, 11081-11089. American Chemical Society |
| ISSN: | 0743-7463 |
| Popis: | The structural evolution of sol-gel derived lead zirconate titanate (PZT) precursor films during and after physical drying was investigated by transmission electron microscopy (TEM), electron energy loss spectroscopy (EELS), selected area electron diffraction (SAED), and time-resolved X-ray diffraction (XRD). Films were deposited from initial 0.3 mol/dm(3) precursor sols with varying hydrolysis ratios. Zr-rich grains of 1-10 nm size, embedded in a Pb-, Zr-, and Ti-containing amorphous matrix were found in as-dried films. The Zr-rich regions were crystalline at hydrolysis ratios [H(2)O]/[PZT]27.6, and amorphous at ratios100. X-ray diffraction analysis of PZT and zirconia sols revealed that the crystalline nanoparticles in both sols are identical and are probably composed of nanosized zirconium oxoacetate-like clusters. This study demonstrates that time-resolved X-ray diffraction combined with electron energy loss spectroscopy mapping is a powerful tool to monitor the nanoscale structural evolution of sol-gel derived thin films. |
| Databáze: | OpenAIRE |
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