01433nas a2200241   4500008004100000022001400041245004900055210004900104260006900153300001200222490000800234520072900242653001200971653001300983653002400996653001801020653001101038100001701049700001401066700001601080700001201096856008301108       2005                        eng d  a0921-510700aCoprecipitation technique to prepare BaNb2O60 aCoprecipitation technique to prepare BaNb2O6  aPO BOX 564, 1001 LAUSANNE, SWITZERLANDbELSEVIER SCIENCE SAcMAR  a169-1710 v1173 a<p>A mixture of ammonium oxalate and ammonium hydroxide was used to coprecipitate barium and niobium ions as barium oxalate and niobium hydroxide under basic conditions. This precursor on calcination at 750degreesC yielded BaNb2O6 ceramics. This is a much lower temperature as compared to that prepared by traditional solid-state method (1000degreesC), as reported for the formation of BaNb2O6. Transmission electron microscope (TEM) investigations revealed that the average particle size is 100 nm for the calcined powders. The room temperature dielectric constant at 1 kHz is found to be 1100. The ferroelectric hysteresis loop parameters of these samples were also studied. (C) 2004 Elsevier B.V. All rights reserved.</p>10aAmmonia10aCeramics10aElectron microscopy10aniobium oxide10aOxides1 aNatarajan, N1 aSamuel, V1 aPasricha, R1 aRavi, V  uhttps://library.ncl.res.in/content/coprecipitation-technique-prepare-banb2o6-001539nas a2200241   4500008004100000022001400041245008100055210006900136260010500205300001200310490000700322520070400329653001301033653002301046653002401069653002101093653001101114100002001125700001401145700001601159700001201175856011001187       2005                        eng d  a0250-470700aPreparation of nanocrystalline ferroelectric BaNb(2)O6 by citrate gel method0 aPreparation of nanocrystalline ferroelectric BaNb2O6 by citrate   aC V RAMAN AVENUE, SADASHIVANAGAR, P B \#8005, BANGALORE 560 080, INDIAbINDIAN ACADEMY SCIENCEScAPR  a121-1230 v283 a<p>A gel was formed when a aqueous solution of BaCl2, NbF5 and citric acid in stoichiometric ratio is heated on a water bath. This gel on decomposition at 600 degrees C yielded the nano crystallites of BaNb2O6, as confirmed by X-ray diffraction study (XRD). This is a much lower temperature as compared to that prepared by traditional solid state method (1000 degrees C) as reported for the formation of BaNb2O6. Transmission electron microscopic. (TEM) investigations revealed that the average particle size is 50 nm for the calcined powders. The room temperature dielectric constant at 1 kHz is found to be 1000. The ferroelectric hysteresis loop parameters of these samples were also studied.</p>10aCeramics10aChemical synthesis10aelectronic material10aferroelectricity10aOxides1 aGaikwad, S., P.1 aSamuel, V1 aPasricha, R1 aRavi, V  uhttps://library.ncl.res.in/content/preparation-nanocrystalline-ferroelectric-banb2o6-citrate-gel-method-001244nas a2200205   4500008004100000022001400041245005500055210005300110260006900163300001000232490000700242520060800249653001300857653002400870653002100894653001100915100001600926700001200942856008400954       2005                        eng d  a0254-058400aSynthesis of Sr0.5Ba0.5Nb2O6 by citrate gel method0 aSynthesis of Sr05Ba05Nb2O6 by citrate gel method  aPO BOX 564, 1001 LAUSANNE, SWITZERLANDbELSEVIER SCIENCE SAcNOV  a34-360 v943 a<p>A gel was formed when an aqueous solution of BaCl2, SrCl2, NbF5 and citric acid in stoichiometric ratio is heated on a water bath. This gel on decomposition at 700 degrees C yielded the nanocrystallites of ternary oxide, Sr0.5Ba0.5Nb2O6 (SBN) as confirmed by X-ray diffraction study (XRD). Particle size and morphology was studied by transmission electron spectroscopy (TEM). The room temperature dielectric constant at I kHz is 1000. The ferroelectric hysteresis loop parameters of these samples were also studied by a home built Sawyer-Tower circuit. (c) 2005 Elsevier B.V. All rights reserved.</p>10aCeramics10aElectron microscopy10aferroelectricity10aOxides1 aPasricha, R1 aRavi, V  uhttps://library.ncl.res.in/content/synthesis-sr05ba05nb2o6-citrate-gel-method-0