Sol-gel derived PMN, PMN-PT and PZT powders and thin films from novel precursors
- Sandia National Labs., Albuquerque, NM (United States); and others
Perovskite Pb(Mg{sub 1/3}Nb{sub 2/3})O{sub 3} (PMN), PMN-PbTiO{sub 3} (PMN-PT) and Pb(Zr{sub 1/2}T{sub 1/2})O{sub 3} thin films are of interest for thin film capacitors and micro-electromechanical systems due to the high dielectric constant and good electromechanical properties these materials possess. Previous sol-gel efforts which have been used for the preparation these thin films employ a methoxyethanol (MeOEt) or acetic acid (HOAc) based system. However, water is generated as a by-product and further uncontrolled modifications occur. Therefore, we are developing an alternative sol-gel methodology for fabricating these thin films. To accomplish this, we have synthesized a number of neo-pentoxide derivatives combined with commercially available reagents which are soluble in organic solvents but do not undergo further modifications. These compounds and other tridentate alkoxide modifiers have been used to make multi-component powders and thin films. These sol-gel processes have been identified by: single crystal X-ray diffraction, XRD, NMR, FT-IR, elemental, and thermal analysis.
- OSTI ID:
- 126645
- Report Number(s):
- CONF-950402--
- Country of Publication:
- United States
- Language:
- English
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