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Pourashraf, Tolou, Yousefi, Mohammad, Shokri, Saeid, Ahmadi, َAbbas, Aberoomand Azar, Parviz. (1402). Synthesis, characterization and Microwave Absorption Properties of Novel Hard-soft Ferrite and Polyaniline-loaded Nanocomposite. نشریه علمی پژوهشی دانشگاه آزاد اسلامی, 17(4), 63-80.
Tolou Pourashraf; Mohammad Yousefi; Saeid Shokri; َAbbas Ahmadi; Parviz Aberoomand Azar. "Synthesis, characterization and Microwave Absorption Properties of Novel Hard-soft Ferrite and Polyaniline-loaded Nanocomposite". نشریه علمی پژوهشی دانشگاه آزاد اسلامی, 17, 4, 1402, 63-80.
Pourashraf, Tolou, Yousefi, Mohammad, Shokri, Saeid, Ahmadi, َAbbas, Aberoomand Azar, Parviz. (1402). 'Synthesis, characterization and Microwave Absorption Properties of Novel Hard-soft Ferrite and Polyaniline-loaded Nanocomposite', نشریه علمی پژوهشی دانشگاه آزاد اسلامی, 17(4), pp. 63-80.
Pourashraf, Tolou, Yousefi, Mohammad, Shokri, Saeid, Ahmadi, َAbbas, Aberoomand Azar, Parviz. Synthesis, characterization and Microwave Absorption Properties of Novel Hard-soft Ferrite and Polyaniline-loaded Nanocomposite. نشریه علمی پژوهشی دانشگاه آزاد اسلامی, 1402; 17(4): 63-80.

Synthesis, characterization and Microwave Absorption Properties of Novel Hard-soft Ferrite and Polyaniline-loaded Nanocomposite

Journal of Applied Chemical Research
دوره 17، شماره 4، دی 2023، صفحه 63-80    اصل مقاله (1.17 M)
نوع مقاله: Original Article
نویسندگان
Tolou Pourashraf1؛ Mohammad Yousefi* 2؛ Saeid Shokri3؛ َAbbas Ahmadi4؛ Parviz Aberoomand Azar1
1Department of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, Iran
2Department of Chemistry, Faculty of Pharmaceutical Chemistry, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
3Digital Transformation Center, Research Institute of Petroleum Industry (RIPI), Tehran, Iran
4Department of Chemistry, Faculty of Science, Karaj Branch, Islamic Azad University, Karaj, Iran
چکیده
Nanocomposites of hard-soft ferrites (SrFe12O19) (1-x)/(Ni0.4Mn0.2Zn0.4Fe2O4) x with x = 0.2, 0.4, 0.6,and 0.8 are synthesized by the auto-combustion sol-gel method. In-situ polymerization is used to create polyaniline and hard-soft ferrite nanocomposites. X-ray powder diffractometers (XRD), field emission scanning electron microscopes (FESEM), Fourier transform infrared spectra (FTIR),vibrating sample magnetometers (VSM), and vector network analyzers (VNA) have all been used to evaluate the structure, morphology, magnetic properties, and microwave absorption of
nanocomposites. FT-IR spectra are used to confirm and validate the existence of both tetrahedral and octahedral complexes, as well as the interactions between polymer chains and hard and soft nanoparticles, which show that ferrite nanocomposites are coated with polymers. In hard-soft and polymeric nanocomposites, XRD analysis reveals the presence of pure hard and soft phase characteristics as well as PANI characteristics. SEM images show that the particles agglomerate in hard-soft composites as the soft phase rises as a result of being magnetic, and images for polymeric
composites show cohesive PANI particles that surround the hard-soft ferrite particle's surface.
These findings demonstrate that PANI and hard-soft ferrites can be properly connected. VSM analysis revealed that by adding polymers, the magnetic properties of hard-soft composites dropped significantly due to the nonmagnetic effects of PANI. The VNA test shows that PANI/(SrFe12O19)0.4/(Ni0.4Mn0.2Zn0.4Fe2O4)0.6 exhibits optimized reflection loss from -1.84 to -16.53 in the X-Band (8-12.5 GHz frequency range) when compared to (SrFe12O19)0.4/ (Ni0.4Mn0.2Zn0.4Fe2O4) 0.6 with a matching thickness of 3 mm.
کلیدواژه‌ها
Hard-soft nanocomposites؛ Hexagonal ferrite؛ Polyaniline؛ Magnetic properties؛ Microwave absorption. 
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