Premium
Synthesis of Nanosized Cesium Ferrite by Precursor and Combustion Method: A Comparative Study
Author(s) -
Gupta Manik,
Gupta Munish,
Randhawa Balwinder S.
Publication year - 2012
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/j.1744-7402.2012.02856.x
Subject(s) - anhydrous , materials science , thermal decomposition , combustion , caesium , formate , ferrite (magnet) , inorganic chemistry , decomposition , nuclear chemistry , chemistry , organic chemistry , composite material , catalysis
Thermolysis of cesium hexa(carboxylato)ferrate(III) precursors, Cs 3 [Fe(L) 6 ].xH 2 O ( L = formate, acetate, propionate, butyrate), has been carried out in flowing air atmosphere from ambient temperature to 1000°C. Various physico‐chemical techniques, that is, simultaneous TG ‐ DTG ‐ DTA , XRD , TEM , IR , M össbauer spectroscopy, have been employed to characterize the intermediates and end products. After dehydration, the anhydrous precursors undergo exothermic decomposition to yield various intermediates, that is, cesium carbonate/propionate/butyrate and α‐ Fe 2 O 3 . A subsequent decomposition of these intermediates leads to the formation of cesium ferrite above 800°C. Similar ferrite has been prepared by the combustion method at comparatively lower temperature (600°C) and in less time than that of conventional ceramic method.