02023nas a2200241   4500008004100000022001400041245010300055210006900158260007400227300001200301490000700313520114200320653002001462653002101482653001901503653002601522653002301548100002201571700002001593700002001613700001901633856012901652       2005                        eng d  a1385-344900aCharacterization of barium titanate: BaTiO3 (BT) ceramics prepared from sol-gel derived BT powders0 aCharacterization of barium titanate BaTiO3 BT ceramics prepared   aVAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDSbSPRINGERcNOV  a103-1080 v153 a<p>Sol-gel synthesis was attempted at room temperature by adding drop wise a clear solution (made by reacting BaCO3 with glacial acetic acid) to an equi-molar solution of titanium tetrabutoxide in isopropanol (IPA) and acetic acid. The gelation occurred within 30 minutes. The as-dried gel was calcined at 750 degrees C/6 h in air to obtain carbon free BaTiO3 powders. The resulting BT powders were further pressed into pellets and sintered at 1280 degrees C/4 h in air to get dense ceramics (density similar to 94%). XRD and SEM techniques were used for phase and microstructure analysis respectively. The room temperature relative permittivity (e) of 1280 increased to 7200 (at Curie temperature of 127 degrees C) at 1 kHz frequency. The dissipation factor (tan delta) similar to 1.6% was observed in these samples. Also, the ferroelectric properties such as spontaneous polarization (Ps similar to 13 mu C/cm(2)), coercive field (E-c similar to 4.0 kV/cm) and dielectric strength (similar to 34 kV/cm) are estimated for these samples. These performance parameters are compared with the available standard data from the literature.</p>10abarium titanate10aferroelectricity10aMicrostructure10arelative permittivity10asol-gel processing1 aDeshpande, S., B.1 aGodbole, P., D.1 aKhollam, Y., B.1 aPotdar, H., S.  uhttps://library.ncl.res.in/content/characterization-barium-titanate-batio3-bt-ceramics-prepared-sol-gel-derived-bt-powders-0