01328nas a2200229   4500008004100000022001400041245005600055210005600111260010500167300001200272490000700284520056100291653001300852653002400865653002500889653002200914100002200936700001800958700001900976700001300995856009001008       2005                        eng d  a0250-470700aCoprecipitation technique to prepare ZnM2O6 powders0 aCoprecipitation technique to prepare ZnM2O6 powders  aC V RAMAN AVENUE, SADASHIVANAGAR, P B \#8005, BANGALORE 560 080, INDIAbINDIAN ACADEMY SCIENCEScJUN  a205-2070 v283 a<p>A simple coprecipitation technique was successfully applied for the preparation of pure ultrafine single phase, ZnNb2O6 (ZN). Ammonium hydroxide was used to precipitate Zn2+ and Nb5+ cations as hydroxides simultaneously. This precursor on heating at 750 degrees, produced ZN powders. For comparison, ZN powders were also prepared by the traditional solid state method. The phase contents and lattice parameters were studied by the powder X-ray diffraction (XRD). Particle size and morphology were studied by transmission electron spectroscopy (TEM).</p>10aCeramics10aElectron microscopy10aelectronic materials10aX-ray diffraction1 aDeshpande, V., V.1 aPatil, M., M.1 aNavale, S., C.1 aRavi, V.  uhttps://library.ncl.res.in/content/coprecipitation-technique-prepare-znm2o6-powders-001534nas a2200253   4500008004100000022001400041245006500055210006500120260007300185300001400258490000700272520073300279653001301012653002301025653002401048653001101072653001101083653002201094100002101116700001501137700001901152700001301171856009601184       2006                        eng d  a0167-577X00aPhase evolution of NiTiO3 prepared by coprecipitation method0 aPhase evolution of NiTiO3 prepared by coprecipitation method  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcJUL  a1791-17920 v603 a<p>A simple coprecipitation technique was used for the preparation of NiTiO3 powders. Ammonium carbonate solution was added to a solution mixture containing stoichiometric amounts of Ni(NO3)(2) and TiOCl2 to precipitate nickel as carbonate and titanium as hydroxide under basic conditions. The precipitate was calcined at different temperatures ranging from 100 to 800 degrees C and phase evolution of NiTiO3 was investigated by X-ray diffraction (XRD) studies. It is observed that nickel titanate was formed at 750 degrees C. For comparison, NiTiO3 was also prepared by standard ceramic process. Particle size and morphology was studied by transmission electron microscopy (TEM). (c) 2005 Elsevier B.V. All fights reserved.</p>10aCeramics10aChemical synthesis10aElectron microscopy10aNiTiO310aOxides10aX-ray diffraction1 aMurugan, Vadivel1 aSamuel, V.1 aNavale, S., C.1 aRavi, V.  uhttps://library.ncl.res.in/content/phase-evolution-nitio3-prepared-coprecipitation-method-001444nas a2200217   4500008004100000022001400041245007900055210006900134260007300203300001400276490000700290520065400297653002600951653002400977653002901001653003301030100002101063700001901084700001301103856011001116       2006                        eng d  a0167-577X00aPreparation of nanocrystalline ferroelectric BaBi4Ti4O15 by Pechini method0 aPreparation of nanocrystalline ferroelectric BaBi4Ti4O15 by Pech  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcAPR  a1023-10250 v603 a<p>A gel was formed when an aqueous solution of BaCl2, BiNO3, TiOCl2 and citric acid in stoichiometric ratio is heated on a water bath. This gel on decomposition at 600 degrees C produced the nano crystallites of ternary oxide, BaBi4Ti4O15 (BBT). The phase contents and lattice parameters were Studied by the powder X-ray diffraction (XRD). Particle size and morphology was studied by transmission electron spectroscopy (TEM). The room temperature dielectric constant at I KHz is 90. 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>10adielectric properties10aElectron microscopy10aferroelectric properties10apowders chemical preparation1 aMurugan, Vadivel1 aNavale, S., C.1 aRavi, V.  uhttps://library.ncl.res.in/content/preparation-nanocrystalline-ferroelectric-babi4ti4o15-pechini-method-001406nas a2200229   4500008004100000022001400041245004400055210004400099260010600143300001400249490000700263520067200270653001300942653002300955653002400978653002501002653002201027100001901049700002001068700001301088856007501101       2006                        eng d  a0025-540800aSynthesis of MgNb2O6 by coprecipitation0 aSynthesis of MgNb2O6 by coprecipitation  aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLANDbPERGAMON-ELSEVIER SCIENCE LTDcJUL  a1353-13560 v413 a<p>A simple coprecipitation technique was used successfully to synthesize fine powders of MgNb2O6 (MN) phase. An aqueous mixture of ammonium carbonate and ammonium hydroxide was used to precipitate Mg2+ and Nb5+ cations as carbonate and hydroxide respectively under basic conditions. This precipitate on heating at 750 degrees C produced MN powders. For comparison MN powders were prepared by the traditional solid state method. The phase content and the lattice parameters were studied by powder X-ray diffraction (XRD). Particle size and morphology of the particles were studied by scanning electron microscopy (SEM). (C) 2006 Elsevier Ltd. All rights reserved.</p>10aCeramics10aChemical synthesis10aElectron microscopy10aelectronic materials10aX-ray diffraction1 aNavale, S., C.1 aGaikwad, A., B.1 aRavi, V.  uhttps://library.ncl.res.in/content/synthesis-mgnb2o6-coprecipitation-001439nas a2200241   4500008004100000022001400041245005000055210004900105260009900154300001200253490000700265520067900272653002100951653001300972653002400985653001101009653002201020100001901042700001901061700002001080700001301100856008401113       2007                        eng d  a0272-884200aCo-precipitation technique to prepare BaTa2O60 aCoprecipitation technique to prepare BaTa2O6  aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLANDbELSEVIER SCI LTDcJAN  a297-2990 v333 a<p>A mixture of ammonium oxalate and ammonium hydroxide was used to co-precipitate barium and tantalum ions as barium oxalate and tantalum hydroxide under basic conditions. On calcination at 750 degrees C, this precursor yielded BaTa2O6 (BT) ceramics. This is much lower temperature as compared to that prepared by traditional solid-state method (1000 degrees C) as reported for the formation of BaTa206. Transmission electron microscope (TEM) investigations revealed that the average particle size is 70 nm for the calcined powders. The room temperature dielectric constant at 1 kHz is found to be 100. (c) 2005 Elsevier Ltd and Techna Group S.r.l. All rights reserved.</p>10abarium tantalate10aCeramics10aElectron microscopy10aOxides10aX-ray diffraction1 aNavale, S., C.1 aSamuel, Violet1 aGaikwad, A., B.1 aRavi, V.  uhttps://library.ncl.res.in/content/co-precipitation-technique-prepare-bata2o6-0