TITLE

Mechanochemical Synthesis of Barium Titanate and Mn-doped Barium Titanate

AUTHOR(S)
Mukherjee, S.; Ghosh, S.; Das, G. Chandra; Mitra, M. Kumar
PUB. DATE
March 2013
SOURCE
Interceram: International Ceramic Review;Mar2013, Vol. 62 Issue 1, p45
SOURCE TYPE
Trade Publication
DOC. TYPE
Article
ABSTRACT
Barium titanate samples with and without Mn doping were successfully synthesized mechanochemically using a high-energy planetary ball mill. Barium oxide obtained by calcination of barium carbonate for 30 min in the temperature range 900 °C to 1300 °C was milled with TiO2 at 400 rpm for 3 and 6 h. MnO2 was used for Mn doping. The milled products were then annealed at 650 °C to 850 °C for 3 and 6 h. XRD and FESEM were used for phase identification and characterization. The ferroelectric characteristics of doped and un-doped nanocrystalline barium titanate were investigated by P-E loop analysis. The un-doped barium titanate exhibited a resistive character while the doped sample showed a more lossy capacitor behaviour.
ACCESSION #
86442210

 

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