01882nas a2200205   4500008004100000022001400041245006800055210006800123260008100191300001200272490000600284520115900290100002501449700001901474700002101493700002401514700002401538700001701562856009701579       2008                        eng d  a1546-542X00aNovel synthesis of SrBi2Nb2O9 powders from hydroxide precursors0 aNovel synthesis of SrBi2Nb2O9 powders from hydroxide precursors  a9600 GARSINGTON RD, OXFORD OX4 2DQ, OXON, ENGLANDbBLACKWELL PUBLISHINGcJAN  a101-1040 v53 a<p>Simple hydroxide precursors were used for the first time for the synthesis of a typical Aurivillius compound (SrBi2Nb2O9 (SBN)) at a low temperature. This method is very advantageous because it circumvents the use of SrCO3 in the case of conventional ceramics as well in the coprecipitation methods, thereby lowering the formation of the product phase. Commercially purchased strontium hydroxide is mixed thoroughly with freshly precipitated bismuth and niobium hydroxides in a stoichiometric ratio and heated at different temperatures ranging from 100 degrees C to 750 degrees C for 12 h. The sequence of the reaction and evolution of the product phase was monitored by X-ray diffraction (XRD) studies by recording the XRD for samples calcined at different temperatures. The incipient SBN phase begins to form at temperatures as low as 400 degrees C, and phase formation was complete only at 650 degrees C as revealed by the XRD observations. The differential thermal/thermogravimetric analyses) also corroborate this result. The morphology and average particle size of these powders were investigated by transmission electron microscopy studies.</p>1 aGupta, Upendra, Nath1 aRao, Koteswara1 aPradhan, Sivaram1 aJha, Ratnesh, Kumar1 aMuthurajan, Harries1 aRavi, Venkat  uhttps://library.ncl.res.in/content/novel-synthesis-srbi2nb2o9-powders-hydroxide-precursors-0