In this work, Ternary composites of NiZn ferrite/carbonyl iron/carbon black (Ni_0.5Zn_0.5Fe₂O₄/CI/CB) are prepared via two stages: Firstly, Ni_0.5Zn_0.5Fe₂O₄ is prepared using a self-combustion method. After that, the process is continued via mixing CB, CI, and Ni_0.5Zn_0.5Fe₂O₄ through the grinding balls. Three various weight ratios of Ni_0.5Zn_0.5Fe₂O₄/CI/CB (1:1:1, 1:1:2, and 2:1:1) with various thicknesses (2–4–6 mm) are prepared. The absorbers are prepared by dispersing (Ni_0.5Zn_0.5Fe₂O₄/CI/CB) composites with a weight ratio of 40% w/w within a paraffin wax matrix. X-ray diffractometry and FTIR spectroscopy are utilized in order to characterize the samples. The morphology of the powders is investigated by SEM. The electromagnetic interference (EMI) shielding and microwave absorption properties are measured in the frequency band of 8.8–12 GHz to investigate the microwave characterization. The microwave absorption materials (MAMs) show wide bandwidths under − 10 dB in the range of 2.8–3.2 GHz and reasonable surface density in the range of 3.62–4.04 kg/m². The MAM shows a minimal reflection loss of -19.4 dB at the matching frequency of 9.9 GHz for the thickness of 6 mm. The maximum shielding efficiency is 21.7 dB at 11.0 GHz for 4 mm thickness of the F/CI/CB-111 composite sample.

In this present work, we offer the design of good, wideband microwave absorption materials (MAMs) based on CB/Mn0.1Ni0.5Zn0.4Fe2O4 (carbon black/MnNiZn ferrite). The ferrite is prepared by a self-combustion method using sucrose as fuel. The chemical is utilized for the synthesis of carbon black nanopowder is carbon black powder (2–8 μm). Then, the operation is continued via mixing carbon black and MnNiZn ferrite through the grinding balls. Four various weight ratios of CB/Mn0.1Ni0.5Zn0.4Fe2O4 (1:0, 1:1, 2:1, and 3:1) with various thicknesses (2–4–6 mm) are prepared. X-ray diffractometry and FTIR spectroscopy are utilized in order to characterize samples. The morphology of the powders is investigated by SEM. The electromagnetic interference (EMI) shielding and microwave absorption properties are measured in the frequency band of 8.8–12 GHz to accomplish the practical characterization. The MAMs show broad bandwidths under -10 dB in the range of 0.3–3.2 GHz and reasonable surface density in the range of 2.91–3.66 kg/m2 with a weight ratio within a paraffin matrix of 40% w/w. The MAM shows a minimal reflection loss of -18.3 dB at the frequency of 11.4 GHz for the thickness of 2 mm. The maximum shielding efficiency is 18.5 dB at 11.5 GHz for 2 mm thickness of the CB/F-21 nanocomposite sample. Бұл жұмыста CB/Mn0.1Ni0.5Zn0.4Fe2O4 (қара көміртек /MnNiZn ферриті) негізіндегі кең жолақты микротолқынды сіңіру материалдарының жасалынуы ұсынылған. Ферриттер сахарозаны отын ретінде қолдану арқылы өздігінен жану арқылы алынады. Химиялық зат көміртекті қара ұнтақ (2–8 мкм) болып табылатын наноұнтақ синтезі үшін қолданылады. Операция содан кейін ұнтақтау шарлары арқылы қара көміртекті және MnNiZn ферритін араластыру арқылы жалғасады. Әртүрлі қалыңдықтағы (2, 4, 6 мм) CB/Mn0.1Ni0.5Zn0.4Fe2O4 (1:0, 1:1, 2:1 және 3:1) төрт түрлі салмақ қатынасы дайындалады. Үлгілерді сипаттау үшін рентгендік дифракция және FTIR спектроскопиясы қолданылады. Ұнтақтардың морфологиясы SEM көмегімен зерттеледі. Практическалық сипаттамаларды алу үшін электромагниттік кедергілерді (EMI) қорғау және микротолқынды жұту қасиеттері 8,8-12 ГГц жиілік диапазонында өлшенді. Микротолқынды жұтатын материалдар 0,3-3,2 ГГц диапазонында -10 дБ-ден төмен кең өткізу қабілеттілігіне және салмағы бойынша 40% парафиндік матрицадағы салмақ қатынасында 2,91-3,66 кг/м2 диапазонында қолайлы аумақтық тығыздыққа ие. Микротолқынды жұтатын материал қалыңдығы 2 мм болатын 11,4 ГГц жиілікте -18,3 дБ кері шағылуын көрсетеді. Қалыңдығы 2 мм CB/F-21 нанокомпозиттік үлгісі үшін экрандаудың максималды тиімділігі 11,5 ГГц жиілікте 18,5 дБ-ді құрайды. В данной работе нами предложена разработка материалов с широкополосным поглощением микроволнового излучения на основе CB/Mn0.1Ni0.5Zn0.4Fe2O4 (черный углерод/феррит MnNiZn). Ферриты получены методом самовозгорания с использованием сахарозы в качестве топлива. Химикат используется для синтеза нанопорошка, представляющего собой порошок сажи (2–8 мкм). Затем операцию продолжают путем перемешивания сажи и феррита MnNiZn через мелющие шары. Готовят четыре различных весовых соотношения CB/Mn0.1Ni0.5Zn0.4Fe2O4 (1:0, 1:1, 2:1 и 3:1) различной толщины (2, 4, 6 мм). Рентгеновская дифрактометрия и FTIR-спектроскопия используются для определения характеристик образцов. Морфологию порошков исследуют с помощью СЭМ. Экранирование электромагнитных помех (ЭМП) и свойства поглощения микроволн измеряются в полосе частот 8,8–12 ГГц для получения практических характеристик. Материалы, поглощающие микроволновое излучение, имеют широкую полосу пропускания ниже -10 дБ в диапазоне 0,3–3,2 ГГц и приемлемую поверхностную плотность в диапазоне 2,91–3,66 кг/м2 при весовом соотношении в парафиновой матрице 40% по весу. Материал, поглощающий микроволновое излучение, при толщине 2 мм демонстрирует минимальное значение обратной потери (-18,3 дБ) на частоте 11,4 ГГц. Максимальная эффективность экранирования составляет 18,5 дБ на частоте 11,5 ГГц для...

NiZn ferrite (Ni^3 + _0.25Ni²⁺_0.375Zn²⁺_0.25Fe₂O₄) is coated with polyaniline (PANI) using an in-situ polymerization technique. Three various weight ratios of PANI/Ni^3 + _0.25Ni²⁺_0.375Zn²⁺_0.25Fe₂O₄ (1:1, 2:1, and 3:1) are synthesized. The absorbers are synthesized by introducing PANI/F nanocomposites within a paraffin wax of 25% w/w. X-ray diffractometry, FTIR spectroscopy, UV-vis spectroscopy, TGA analysis and SEM analysis are utilized in order to characterize the samples. The electromagnetic interference (EMI) shielding and microwave absorption (MA) properties are measured in the frequency band of 8.8–12 GHz to investigate the microwave characterization. Minimal reflection loss of -19.8 dB at the matching frequency of 10.8 GHz and the absorption bandwidth under − 10 dB of 2.2 GHz for 3.12 mm thickness with a surface density of 3.07 kg/m² are noticed for the PANI/F.2 nanocomposite sample. The maximum shielding efficiency of 23.18 dB at 11.1 GHz for 2.90 mm thickness is observed for the PANI/F.2 nanocomposite.

In this paper, Ternary composites of polyaniline/NiZn ferrite/carbonyl iron (PANI/F/CI) are prepared via two stages: Firstly, Ni_0.5Zn_0.5Fe₂O₄ is prepared using a sol-gel method while carbonyl iron is commercially purchased. After that, PANI/F/CI composites are prepared using an in-situ polymerization technique of PANI in the existence of the Ni_0.5Zn_0.5Fe₂O₄ and CI. X-ray diffractometry, FTIR spectroscopy, UV-vis spectroscopy, TGA analysis, and SEM analysis are utilized in order to characterize samples. The morphology of the powders is investigated by SEM. The electromagnetic interference shielding and microwave absorption properties are measured in the frequency band of 8.8–12 GHz to investigate the microwave characterization. The results refer those microwave absorption properties are related to the absorber thickness and the loading ratio of the absorber within a paraffin matrix. Minimal reflection loss of -30.8 dB at the matching frequency of 10.3 GHz and the absorption bandwidth under − 10 dB of 2.8 GHz for 3.4 mm thickness with a surface density of 3.38 kg/m² are noticed for the PANI/F/CI composite sample. The maximum shielding efficiency of 30.12 dB at 11.0 GHz for 3.2 mm thickness is observed for the PANI/F/CI composite sample.

In this work, ternary composites of NiZn ferrite/carbonyl iron/carbon black (Ni0.5Zn0.5Fe2O4/CI/CB) were prepared via two stages. Firstly, Ni0.5Zn0.5Fe2O4 was prepared by a self-combustion method using sucrose as a fuel. After that, the operation was continued via mixing CB, CI, and Ni0.5Zn0.5Fe2O4 through grinding balls. Three various weight ratios of Ni0.5Zn0.5Fe2O4/CI/CB (1:1:1, 1:1:2, and 2:1:1) with various thicknesses (2–4–6 mm) were prepared. The absorbers were prepared by dispersing (Ni0.5Zn0.5Fe2O4/CI/CB) composites with a weight ratio within a paraffin wax matrix of 40 % w/w. X-ray diffractometry and FTIR spectroscopy were used in order to characterize the samples. The morphology of the powders was investigated by SEM. The functional characterization was accomplished by measuring the microwave absorption properties in the fre-quency band of 8.8–12 GHz. The microwave absorption materials (MAMs) showed wide bandwidths under –10 dB in the range of 2.81–3.20 GHz and reasonable surface density in the range of 3.625–4.041 kg/m2. The absorber of 3.20 GHz bandwidth had a minimal reflection loss of –19.4 dB at the matching frequency of 9.92 GHz with a thickness of 6 mm.