01469nas a2200241   4500008004100000022001400041245005000055210005000105260007300155300001400228490000700242520071400249653002300963653002400986653002501010653001801035100001301053700002301066700002001089700002101109700001301130856008401143       2006                        eng d  a0167-577X00aChemical methods to synthesize FeTiO3 powders0 aChemical methods to synthesize FeTiO3 powders  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcMAY  a1425-14270 v603 a<p>Three different techniques were used to synthesize FeTiO3 powders. The first method is simple coprecipitation of both Fe and Ti ions under basic conditions using standard ammonia solution from aqueous ferric nitrate and titanium oxy chloride. This precipitate on heating at 400 degrees C produces ilmenite phase. The second method is to digest hydroxide precipitates at 100 degrees C to form FeTiO3 phase. The third technique is to make use of citrate process to form FeTiO3 powders. The phase contents and lattice parameters were Studied by powder X-ray diffraction (XRD). Particle size and morphology were studied by Transmission Electron Microscopy (TEM). (c) 2005 Elsevier B.V. All tights reserved.</p>10aChemical synthesis10aElectron microscopy10aelectronic materials10aX-ray methods1 aMona, J.1 aKale, Sangeeta, N.1 aGaikwad, A., B.1 aMurugan, Vadivel1 aRavi, V.  uhttps://library.ncl.res.in/content/chemical-methods-synthesize-fetio3-powders-001365nas a2200217   4500008004100000022001400041245005600055210005600111260007300167300001400240490000700254520066500261653001300926653002400939653002500963653002200988100001501010700002001025700001201045856009001057       2006                        eng d  a0167-577X00aCoprecipitation technique to prepare LiTaO3 powders0 aCoprecipitation technique to prepare LiTaO3 powders  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcAPR  a1047-10480 v603 a<p>A simple coprecipitation technique had been successfully applied for the preparation of pure ultrafine single phase LiTaO3 (LT). An aqueous mixture of ammonium carbonate and ammonium hydroxide was used to precipitate Li+ and Ta5+ cations as carbonate and hydroxide respectively. This precursor oil heating at 750 degrees C produces LT powders. For comparison, LT 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). (c) 2005 Elsevier B.V. All rights reserved.</p>10aCeramics10aElectron microscopy10aelectronic materials10aX-ray diffraction1 aNavale, SC1 aGaikwad, A., B.1 aRavi, V  uhttps://library.ncl.res.in/content/coprecipitation-technique-prepare-litao3-powders-001483nas a2200241   4500008004100000022001400041245005900055210005900114260010500173300001200278490000700290520069100297653001300988653002301001653002401024653002501048653001101073653001801084100001401102700002001116700001201136856009301148       2006                        eng d  a0250-470700aCoprecipitation technique to prepare NaNbO3 and NaTaO30 aCoprecipitation technique to prepare NaNbO3 and NaTaO3  aC V RAMAN AVENUE, SADASHIVANAGAR, P B \#8005, BANGALORE 560 080, INDIAbINDIAN ACADEMY SCIENCEScAPR  a123-1250 v293 a<p>A simple coprecipitation technique has been used successfully for the preparation of pure, ultrafine, single phases of NaNbO3 (NN) and NaTaO3 (NT). An alcoholic solution of ammonium carbonate and ammonium hydroxide was used to precipitate Na+ and Nb5+ (or Ta5+) cations under basic conditions as carbonate and hydroxide, respectively. On heating at 700 degrees C, these precursors produce respective products. For comparison, both NN and NT powders were also prepared by the traditional solid state method. The phase purity and lattice parameters were studied by powder X-ray diffraction (XRD). The particle size and morphology were studied by scanning electron microscopy (SEM).</p>10aCeramics10aChemical synthesis10aElectron microscopy10aelectronic materials10aOxides10aX-ray methods1 aSamuel, V1 aGaikwad, A., B.1 aRavi, V  uhttps://library.ncl.res.in/content/coprecipitation-technique-prepare-nanbo3-and-natao3-001406nas 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-001466nas a2200253   4500008004100000022001400041245006100055210006100116260007300177300001400250490000700264520066400271653002300935653002500958653001100983653001800994100002201012700001801034700002001052700001501072700001901087700001301106856009301119       2007                        eng d  a0167-577X00aCoprecipitation technique to prepare CoTa2O6 and CoNb2O60 aCoprecipitation technique to prepare CoTa2O6 and CoNb2O6  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcMAY  a2127-21290 v613 a<p>An aqueous solution of sodium hydroxide was used to coprecipitate cobalt and tantalum (or niobium) ions from their precursors as hydroxides under basic conditions. This precipitate yielded CoTa2O6 (CT) or CoNb2O6 (CN) ceramics on calcining at 700 degrees C, i.e. at a temperature much lower than 900 degrees C, reported for the formation of these powders prepared by the traditional solid state method. The X-ray diffraction (XRD) studies were employed to investigate phase contents and lattice parameters. The morphology of the synthesized powders was investigated by transmission electron microscopy (TEM). (c) 2006 Elsevier B.V. All rights reserved.</p>10aChemical synthesis10aelectronic materials10aOxides10aX-ray methods1 aMulla, Imtiaz, S.1 aNatarajan, N.1 aGaikwad, A., B.1 aSamuel, V.1 aGuptha, U., N.1 aRavi, V.  uhttps://library.ncl.res.in/content/coprecipitation-technique-prepare-cota2o6-and-conb2o601333nas a2200253   4500008004100000022001400041245004900055210004900104260007300153300001400226490000700240520056500247653002300812653002400835653002500859653001100884653001800895100001500913700002000928700001900948700001800967700001300985856008100998       2007                        eng d  a0167-577X00aCoprecipitation technique to prepare NiNb2O60 aCoprecipitation technique to prepare NiNb2O6  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcMAY  a2354-23550 v613 a<p>A mixture of ammonium carbonate and ammonium hydroxide was used to coprecipitate nickel and niobium ions as nickel carbonate and niobium hydroxide under basic conditions. This precursor yielded NiNb2O6 (NN) ceramics on calcining at 700 degrees C (at a temperature lower than 800 degrees C which is necessary for the formation of NiNb2O6 when prepared by the traditional solid state method). The average particle size and morphology of these powders were investigated by transmission electron microscope (TEM). (c) 2006 Elsevier B.V. All rights reserved.</p>10aChemical synthesis10aElectron microscopy10aelectronic materials10aOxides10aX-ray methods1 aSamuel, V.1 aGaikwad, A., B.1 aJadhav, A., D.1 aNatarajan, N.1 aRavi, V.  uhttps://library.ncl.res.in/content/coprecipitation-technique-prepare-ninb2o601416nas a2200253   4500008004100000022001400041245005700055210005700112260007300169300001200242490000700254520062500261653002300886653002400909653002500933653001100958653002200969100001500991700002001006700001901026700001801045700001301063856008601076       2007                        eng d  a0167-577X00aNovel technique to prepare LiNbO3 at low temperature0 aNovel technique to prepare LiNbO3 at low temperature  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcFEB  a765-7660 v613 a<p>Fresh niobium hydroxide was first precipitated from NbF5 solution using an aqueous ammonium hydroxide under basic conditions. Then a simple procedure of mixing lithium and niobium hydroxides together and heating at a low temperature (400 degrees C) produced pure ultrafine single phase LiNbO3 (LN). In the literature, this is the lowest temperature so far reported on the formation of LN. The phase content and lattice parameters are determined by X-ray diffraction (XRD). The average particle size and morphology were studied by transmission electron microscopy (TEM). (c) 2006 Elsevier B.V. All rights reserved.</p>10aChemical synthesis10aElectron microscopy10aelectronic materials10aLiNbO310aX-ray diffraction1 aSamuel, V.1 aGaikwad, A., B.1 aJadhav, A., D.1 aMirji, S., A.1 aRavi, V.  uhttps://library.ncl.res.in/content/novel-technique-prepare-linbo3-low-temperature