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Direct preparation of ultrafine BaTiO3 nanoparticles by chemical vapor synthesis

Mojić-Lanté, Bojana and Djenadic, Ruzica and Srdić, Vladimir V. and Hahn, Horst (2014):
Direct preparation of ultrafine BaTiO3 nanoparticles by chemical vapor synthesis.
In: Journal of Nanoparticle Research, Springer Netherlands, p. 2618, 16, (9), ISSN 1388-0764,
[Online-Edition: http://dx.doi.org/10.1007/s11051-014-2618-5],
[Article]

Abstract

Ultrafine, crystalline barium titanate (BaTiO3) nanoparticles were synthesized by chemical vapor synthesis (CVS). Titanium- and Barium-organometallic solid precursors were vaporized using a laser flash evaporator as precursor delivery unit. The process parameters such as precursor ratio, reactor temperature, and reactor length were varied in order to find the optimal conditions to allow the direct synthesis of crystalline particles with the stoichiometric composition. Crystalline, spherical nanoparticles with a size of about 8 nm, free of barium carbonates and with low degree of agglomeration were obtained using a precursor ratio of Ba/Ti = 4, a maximum reactor temperature of 1,700 A degrees C, and a total reactor length of 165 cm. The potential of the CVS process for the synthesis of nanoscaled, impurity-free, and phase-pure BaTiO3 particles in one step is presented. The results demonstrate the capabilities of the CVS method, not only for the preparation of BaTiO3, but also for many other multi-component systems.

Item Type: Article
Erschienen: 2014
Creators: Mojić-Lanté, Bojana and Djenadic, Ruzica and Srdić, Vladimir V. and Hahn, Horst
Title: Direct preparation of ultrafine BaTiO3 nanoparticles by chemical vapor synthesis
Language: English
Abstract:

Ultrafine, crystalline barium titanate (BaTiO3) nanoparticles were synthesized by chemical vapor synthesis (CVS). Titanium- and Barium-organometallic solid precursors were vaporized using a laser flash evaporator as precursor delivery unit. The process parameters such as precursor ratio, reactor temperature, and reactor length were varied in order to find the optimal conditions to allow the direct synthesis of crystalline particles with the stoichiometric composition. Crystalline, spherical nanoparticles with a size of about 8 nm, free of barium carbonates and with low degree of agglomeration were obtained using a precursor ratio of Ba/Ti = 4, a maximum reactor temperature of 1,700 A degrees C, and a total reactor length of 165 cm. The potential of the CVS process for the synthesis of nanoscaled, impurity-free, and phase-pure BaTiO3 particles in one step is presented. The results demonstrate the capabilities of the CVS method, not only for the preparation of BaTiO3, but also for many other multi-component systems.

Journal or Publication Title: Journal of Nanoparticle Research
Volume: 16
Number: 9
Publisher: Springer Netherlands
Uncontrolled Keywords: Nanoparticles, Barium titanate, Chemical vapor synthesis, Gas phase synthesis
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Joint Research Laboratory Nanomaterials
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 16 Feb 2015 13:00
Official URL: http://dx.doi.org/10.1007/s11051-014-2618-5
Identification Number: doi:10.1007/s11051-014-2618-5
Funders: B. M. L. acknowledges the support of the German Academic Exchange Service Fellowship (DAAD A/11/84495)., Financial support from Ministry of Science of Republic of Serbia (project III45021) is also acknowledged.
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