01277nas a2200169   4500008004100000022001400041245007700055210006900132260007400201300001200275490000700287520065900294100002000953700001800973700001300991856010301004       2005                        eng d  a0957-452200aCo-precipitation method for the preparation of ferroelectric CaBi4Ti4O150 aCoprecipitation method for the preparation of ferroelectric CaBi  aVAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDSbSPRINGERcAPR  a229-2310 v163 a<p>A simple co-precipitation technique has been successfully applied for the preparation of pure single phase CaBi4Ti4O15 (CBT) powders. Ammonium oxalate and ammonium hydroxide were used to precipitate Ca2+, Bi3+ and Ti4+ cations simultaneously. No pyrochlore phase was found while heating powder at 600&amp;DEG; C and pure CBT phase was found to be formed by X-ray diffraction. Particle size and morphology was studied by transmission electron microscopy (TEM). The room temperature dielectric constant at 1 kHz is 400. The ferroelectric hysteresis loop parameters of these samples were also studied. (C) 2005 Springer Science + Business Media, Inc.</p>1 aGaikwad, S., P.1 aDhage, S., R.1 aRavi, V.  uhttps://library.ncl.res.in/content/co-precipitation-method-preparation-ferroelectric-cabi4ti4o15-001524nas a2200229   4500008004100000022001400041245008000055210006900135260009900204300001200303490000700315520069300322653002601015653002401041653002901065653003301094100002001127700001501147700001401162700001201176856010601188       2005                        eng d  a0272-884200aCo-precipitation method for the preparation of fine ferroelectric BaBi2M2O90 aCoprecipitation method for the preparation of fine ferroelectric  aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLANDbELSEVIER SCI LTDcJAN  a379-3810 v313 a<p>A simple co-precipitation technique had been successfully applied for the preparation of pure fine powders of single phase BaBi2Nb2O9. Ammonium hydroxide and ammonium oxalate were used to precipitate Ba2+, Bi3+ and Nb5+ cations simultaneously. No pyrochlore phase was formed while heating powder at 800 degrees C and pure BaBi2Nb2O9 phase was found to be formed by X-ray diffraction (XRD). Particle size and morphology was studied by transmission electron spectroscopy (TEM). The room temperature dielectric constant at 1 kHz is 100. The ferroelectric hysteresis loop parameters of these samples were also studied. (c) 2004 Elsevier Ltd and Techna Group S.r.l. All rights reserved.</p>10adielectric properties10aElectron microscopy10aferroelectric properties10apowders chemical preparation1 aGaikwad, S., P.1 aPotdar, HS1 aSamuel, V1 aRavi, V  uhttps://library.ncl.res.in/content/co-precipitation-method-preparation-fine-ferroelectric-babi2m2o9-001502nas 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-001583nas a2200217   4500008004100000022001400041245007900055210006900134260010000203300001200303490000700315520077500322653002601097653002401123653002901147653003501176100002001211700001601231700001201247856010601259       2005                        eng d  a0272-884200aPreparation of nanocrystalline ferroelectric CaBi2Ta2O9 by the urea method0 aPreparation of nanocrystalline ferroelectric CaBi2Ta2O9 by the u  aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLANDbELSEVIER SCI LTDcJAN   a773-7750 v313 a<p>A precipitate was formed when a aqueous solution of CaCl2, BiCl3, TaF5 and urea in stoichiometric ratio (total metal cations to urea ratio is 5) is heated on a water bath. This precipitate on decomposition at 600 degrees C yielded the nanocrystallites of ternary oxide CaBi2Ta2O9 (CBT) as confirmed by X-ray diffraction (XRD). Particle size and morphology was studied by transmission electron spectroscopy (TEM). Ferroelectric hysteresis loop parameters such as remnant polarization (P-r) and coercive field (E-C) were also determined. TEM investigations revealed that the average particle size of the polycrystalline powder is 70 nm. The room temperature dielectric constant was found to be 110. (c) 2004 Elsevier Ltd and Techna Group S.r.l. All rights reserved.</p>10adielectric properties10aElectron microscopy10aferroelectric properties10apowders : chemical preparation1 aGaikwad, S., P.1 aPasricha, R1 aRavi, V  uhttps://library.ncl.res.in/content/preparation-nanocrystalline-ferroelectric-cabi2ta2o9-urea-method-001418nas a2200205   4500008004100000022001400041245008100055210006900136260006900205300001200274490000800286520070600294653001201000653001601012653002401028100002001052700001601072700001201088856011201100       2005                        eng d  a0921-510700aPreparation of nanocrystalline ferroelectric CaBi2TaO9 by citrate gel method0 aPreparation of nanocrystalline ferroelectric CaBi2TaO9 by citrat  aPO BOX 564, 1001 LAUSANNE, SWITZERLANDbELSEVIER SCIENCE SAcMAR  a159-1610 v1173 a<p>A gel was formed when an aqueous solution of CaCl2, BiCl3, TaF5 and citric acid in stoichiometric ratio is heated on a water bath. This gel on decomposition at 600degreesC yielded the nano-crystallites of ternary oxide, CaBi2Ta2O9 (CBT) as confirmed by X-ray diffraction study (XRD). Particle size and morphology was studied by transmission electron spectroscopy (TEM). Ferroelectric hysteresis loop parameters such as remnant polarization (P-r) and coercive field (E-C) are also determined. TEM investigations revealed that the average particle size of the polycrystalline powder is 40 nm. The room temperature dielectric constant was found to be 90. (C) 2004 Elsevier B.V All rights reserved.</p>10aBismuth10adiffraction10aElectron microscopy1 aGaikwad, S., P.1 aPasricha, R1 aRavi, V  uhttps://library.ncl.res.in/content/preparation-nanocrystalline-ferroelectric-cabi2tao9-citrate-gel-method-0