TY - JOUR
T1 - Microwave-hydrothermal synthesis and characterization of barium titanate powders
AU - Newalkar, Bharat L.
AU - Komarneni, Sridhar
AU - Katsuki, Hiroaki
N1 - Funding Information:
This research was supported by Center for Dielectric Studies, Materials Research Laboratory, The Pennsylvania State University.
PY - 2001/11/1
Y1 - 2001/11/1
N2 - The synthesis of barium titanate (BaTiO3) has been investigated under microwave-hydrothermal (M-H) conditions in the temperature range of 60-160°C using BaCl2, and TiCl4 as Ba, and Ti sources, respectively. The crystallized products were characterized by powder X-ray diffraction (XRD), scaning electron microscopy (SEM), thermogravimetric analysis (TGA), transmission electron microscopy (TEM), and particle-size analysis techniques. The results showed the crystallization of BaTiO3 phase at all the synthesis temperatures along with the formation of BaCO3 as a minor impurity. The crystallization of BaTiO3 powder having an average crystallite size of 0.3 μm with CO32- content of 0.8% was achieved at 160°C in the presence of 10 M NaOH in 3 h. These results show that the M-H synthesis route is rapid, cost effective, and could serve as an alternative to obtain BaTiO3 powders with submicron particle size.
AB - The synthesis of barium titanate (BaTiO3) has been investigated under microwave-hydrothermal (M-H) conditions in the temperature range of 60-160°C using BaCl2, and TiCl4 as Ba, and Ti sources, respectively. The crystallized products were characterized by powder X-ray diffraction (XRD), scaning electron microscopy (SEM), thermogravimetric analysis (TGA), transmission electron microscopy (TEM), and particle-size analysis techniques. The results showed the crystallization of BaTiO3 phase at all the synthesis temperatures along with the formation of BaCO3 as a minor impurity. The crystallization of BaTiO3 powder having an average crystallite size of 0.3 μm with CO32- content of 0.8% was achieved at 160°C in the presence of 10 M NaOH in 3 h. These results show that the M-H synthesis route is rapid, cost effective, and could serve as an alternative to obtain BaTiO3 powders with submicron particle size.
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U2 - 10.1016/S0025-5408(01)00729-2
DO - 10.1016/S0025-5408(01)00729-2
M3 - Article
AN - SCOPUS:0035499279
SN - 0025-5408
VL - 36
SP - 2347
EP - 2355
JO - Materials Research Bulletin
JF - Materials Research Bulletin
IS - 13-14
ER -