Journal
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
Volume 29, Issue 12, Pages 2575-2579Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jeurceramsoc.2009.02.004
Keywords
Powders-chemical preparation; Sol-gel processes; Nanotubes; Perovskites; PbTiO3
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Funding
- International Section at the Norwegian University of Science and Technology (NTNU)
- Scandinavia-Japan Sasakawa Foundation
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Nanotubes of ferroelectric lead titanate (PbTiO3) have been made by a template-assisted method. An equimolar Pb-Ti sol was dropped onto porous alumina membranes and penetrated into the channels of the template. Single-phase PbTiO3 perovskite nanotubes were obtained by annealing at 700 degrees C for 6 h. The nanotubes had diameters of 200-400 nm with a wall thickness of approximately 20 nm. Excess PbO or annealing in a Pb-containing atmosphere was not necessary in order to achieve single-phase PbTiO3 nanotubes. The influence of the heating procedure and the sol concentration is discussed. (C) 2009 Elsevier Ltd. All rights reserved.
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