Low temperature hydrothermal synthesis of nanophase BaTiO3and BaFe12O19 powders
Abstract
Nanocrystalline powders with an average particle size of 50 nm has been synthesized two materials systems under hydrothermal conditions below 100 C. Processing variables, such as temperature, concentration and molar ratio of reactants and reaction time were optimized to obtain particles of reduced size and stoichiometric compositions. Hydrothermal reaction takes place between Ba(OH){sub 2} solution and titanium/iron precursors in sealed polyethylene bottles in the BaTiO{sub 3} and BaFe{sub 12}O{sub 19} systems, respectively. While crystalline BaTiO{sub 3} forms relatively fast within a few hours, formation of fully crystalline and stoichiometric BaFe{sub 12}O{sub 19} require considerably longer reaction times up to several weeks and strongly dependent on the Ba:Fe ratio of the precursors. The structural and compositional evaluation of the nanosphere powders are studied by XRD and TEM technologies.
Recommended Citation
F. Dogan et al., "Low temperature hydrothermal synthesis of nanophase BaTiO3and BaFe12O19 powders," Materials Research Society, Sep 1997.
Department(s)
Materials Science and Engineering
International Standard Book Number (ISBN)
1-55899-361-4
Document Type
Book - Chapter
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2026 Materials Research Society, All rights reserved
Publication Date
1997-09-01
Comments
Report Number(s): CONF-961202--