Journal
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Volume 323, Issue 7, Pages 945-953Publisher
ELSEVIER
DOI: 10.1016/j.jmmm.2010.11.075
Keywords
Co-precipitation/molten salt method; Barium ferrite; Doping; Saturation magnetization; Coercivity
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Barium ferrites substituted by Mn-Sn, Co-Sn, and Mn-Co-Sn with general formulae BaFe12-2xMnxSnxO19 (x=0.2-1.0), BaFe12-2xCoxSnxO19 (x=0.2-0.8), and BaFe12-2xCox/2Mnx/2SnxO19 (x=0.1-0.6), respectively, have been prepared by a previously reported co-precipitation method. The efficiency of the method was refined by lowering the reaction temperature and shortening the required reaction time, due to which crystallinity improved and the value of saturated magnetization increased as well. Low coercivity temperature coefficients, which are adjustable by doping, were achieved by Mn-Sn and Mn-Co-Sn doping. Synthesis efficiency and the effect of doping are discussed taking into account accumulated data concerning the synthesis and crystal structure of ferrites. (C) 2010 Elsevier B.V. All rights reserved.
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