naa a22 4500 51080120X CHVBK 20180411083356.0 cr unu---uuuuu 180411e20130901xx s 000 0 eng 10.1007/s11664-013-2655-3 doi (NATIONALLICENCE)springer-10.1007/s11664-013-2655-3 Structural, Magnetic, and Microwave Properties of SrFe12− x (Ni0.5Co0.5Sn) x /2O19 Particles Synthesized by Sol-Gel Combustion Method [Elektronische Daten] [Mohammad Mousavinia, Ali Ghasemi, Ebrahim Paimozd] This study is intended to evaluate the structural, magnetic, and microwave properties of Ni-Co-Sn-doped strontium hexaferrite SrFe12−x (Ni0.5Co0.5Sn) x/2 O19 particles with x=0 to 2.5 synthesized by a sol-gel combustion method. These particles were evaluated to characterize the structural, magnetic, and reflection loss properties of prepared samples by use of x-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), Fourier-transform infrared (FTIR) spectroscopy, vibrating-sample magnetometer (VSM), and vector network analyzer. The XRD results confirmed the presence of strontium ferrite phase with magnetoplumbite structure in all synthesized samples. The results of FTIR analysis indicated the formation of functional groups such as metal-oxygen (Sr-O and Fe-O) and carboxylic groups during the sol-gel process. In addition, FE-SEM micrographs indicated that submicron particles with different morphologies such as spherical, pyramidal, irregular, and hexagonal platelet shapes appeared in the structure. According to hysteresis loops, magnetization and coercivity decreased due to occupation of Ni-Co-Sn cations at low levels of substitutions. The microwave absorption characteristics of this ferrite were investigated in the 8GHz to 12GHz frequency range. The sample with 80wt.% ferrite content showed a maximum reflection loss of −29dB at 9.6GHz with 4GHz bandwidth through the entire frequency range of 8GHz to 12GHz for absorber thickness of 1.5mm. Based on microwave measurements of reflectivity, this material with the expressed chemical composition could be proposed as a good choice for electromagnetic compatibility and other practical applications such as microwave absorption at high frequencies. TMS, 2013 Strontium ferrites nationallicence magnetic properties nationallicence microwave properties nationallicence Mousavinia Mohammad Department of Materials Engineering, Malek Ashtar University of Technology, Shahin Shahr, Iran aut Ghasemi Ali Department of Materials Engineering, Malek Ashtar University of Technology, Shahin Shahr, Iran aut Paimozd Ebrahim Department of Materials Engineering, Malek Ashtar University of Technology, Shahin Shahr, Iran aut Journal of Electronic Materials Springer US; http://www.springer-ny.com 42/9(2013-09-01), 2784-2792 0361-5235 42:9<2784 2013 42 11664 https://doi.org/10.1007/s11664-013-2655-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11664-013-2655-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Mousavinia Mohammad Department of Materials Engineering, Malek Ashtar University of Technology, Shahin Shahr, Iran aut NATIONALLICENCE 700 1- Ghasemi Ali Department of Materials Engineering, Malek Ashtar University of Technology, Shahin Shahr, Iran aut NATIONALLICENCE 700 1- Paimozd Ebrahim Department of Materials Engineering, Malek Ashtar University of Technology, Shahin Shahr, Iran aut NATIONALLICENCE 773 0- Journal of Electronic Materials Springer US; http://www.springer-ny.com 42/9(2013-09-01), 2784-2792 0361-5235 42:9<2784 2013 42 11664 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer