Abstract
In this communication, the synthesis and characterization of the first perovskite nanotubes made by sol−gel template synthesis is demonstrated. SEM shows that the structures formed are 200-nm outer diameter tubes with 50-μm lengths. TEM and electron diffraction reveal that the tubes are polycrystalline. In a comparison of the d-spacing between electron and bulk powder X-ray diffraction patterns, the crystalline phase of the nanotubes were assigned cubic for barium titatnate (BaTiO3) and tetragonal for lead titanate (PbTiO3).
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