01502nas a2200253   4500008004100000022001400041245010100055210006900156260007400225300001000299490000700309520062700316653001300943653002300956653002500979653002101004653001101025100002001036700001801056700001901074700001501093700001301108856012701121       2005                        eng d  a1385-344900aCo-precipitation method for the preparation of nanocrystalline ferroelectric SrBi2Nb2O9 ceramics0 aCoprecipitation method for the preparation of nanocrystalline fe  aVAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDSbSPRINGERcJAN  a83-870 v143 a<p>A simple co-precipitation technique had been successfully applied for the preparation of pure ultrafine single phase SrBi2Nb2O9. Ammonium hydroxide and ammonium oxalate were used to precipitate Sr2+, Bi3+ and Nb5+ cations simultaneously. No pyrochlore phase was found while heating powder at 850 C and pure SrBi2Nb2O9 (SBN) phase was formed as revealed by the X-ray diffraction (XRD) studies. Particle size and morphology was studied by transmission electron microscopy (TEM). The room temperature dielectric constant at 1 kHz is 100. The ferroelectric hysteresis loop parameters of these samples were also studied.</p>10aCeramics10aChemical synthesis10aelectronic materials10aferroelectricity10aOxides1 aGaikwad, S., P.1 aDhage, S., R.1 aPotdar, H., S.1 aSamuel, V.1 aRavi, V.  uhttps://library.ncl.res.in/content/co-precipitation-method-preparation-nanocrystalline-ferroelectric-srbi2nb2o9-ceramics-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-0