Microwave absorption characteristics of substituted Ba0.5Sr0.5MxFe(12-2x)O19 (M=Co2+?Zr4+AND Co2+?Ti4+) sintered ferrite at X-band

The microwave reflection loss (RL) of four series of synthesized ferrites, Ba0.5Sr0.5CoxZrxFe(12 - 2x)O19 and Ba0.5Sr0.5CoxTixFe(12 - 2x)O19, have been measured using network analyzer in the frequency range from 8.2 to 12.4 GHz. The comprehensive analysis of RL is carried out as a function of substitution, frequency, and thickness. The various models contributing to large RL are described. The composition accompanying maximum microwave absorption is suggested. (C) 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:16611665, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26912