Effects of divalent ions substitution on the microstructure, magnetic and electromagnetic parameters of Co2W hexagonal ferrites synthesized by sol–gel method
作者： Mukhtar Ahmad , Ihsan Ali , R. Grössinger , M. Kriegisch , F. Kubel
DOI: 10.1016/J.JALLCOM.2013.04.115
关键词:
摘要: Abstract Divalent (Me) ions substituted W-type hexagonal ferrites with chemical formula Ba0.5Sr0.5Co2−xMexFe16O27 (x = 0, 0.5 and Me = Mn, Mg, Zn, Ni) were prepared by sol–gel autocombustion method at 1300 °C for 5 h. Thermal IR spectral studies carried out means of differential thermal/thermogravimetric analysis Fourier transform infrared spectroscopy respectively. The microstructure was investigated using the powder X-ray diffractometer field emission gun scanning electron microscope. results showed that divalent single phase appeared as platelet-like shape which is better microwave absorption. M–H loops a selected sample measured up to maximum applied 9T in temperature range 4.2–400 K. values saturation magnetization calculated law approach saturation. room value coercivity found be few oersteds favorable EM materials. Based on electromagnetic parameters, reflection losses are depend thickness absorber.
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