Article
Materials Science, Multidisciplinary
Xiaoqiong Wang, Hongyu Yan, Shichun Zhao, Shunquan Liu, Hong Chang
Summary: By doping with Sn4+ and Mn2+/Mn3+, the M-type BaFe12-y-2xAlySnxMnxO19 exhibits strong magnetic absorption at specific frequencies.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Yixing Gao, Lichuan Jin, Yong Liang, Tingchuan Zhou
Summary: Li0.4Zn0.2Fe2.4O4/Y3Fe5O12-BBSZ ferrite-glass nanocomposites were fabricated through low-temperature liquid phase sintering process. The nanocomposites show clear phase separation of Li0.4Zn0.2Fe2.4O4 ferrite and Y3Fe5O12 ferrite with a small amount of YFeO3. The LiZn/YIG-BBSZ exhibits a dense granular structure with optimized porosity and grain size, resulting in a relatively high saturation magnetization and a low coercivity. The enlarged ferromagnetic resonance (FMR) linewidth of LiZn/YIG-BBSZ makes it promising for electromagnetic shielding or microwave absorbers design.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Materials Science, Ceramics
Biswanath Bhoi, Mangesh S. Diware
Summary: This study demonstrates the growth of highly oriented YIG films on amorphous quartz substrates with excellent magnetic properties and structural characteristics. The formation of YIG with preferred orientation opens up significant opportunities for preparing textured or single crystal materials on amorphous substrates, which is important for integrated applications with semiconductor technology.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Ceramics
Shengtai Zhang, Lingkun Wang, Baoliang Xu, Jian Liu, Shilin Luo, Shiyin Ji, Yi Ding, Ling Zhang, Jianjun Ma, Tao Duan
Summary: This study prepared Nd-doped YIG ceramic samples by microwave sintering at different temperatures and times, showing enhanced Nd solubility in YIG at higher temperatures with a stable solubility level. Microwave sintering was found to be a rapid and efficient method for synthesizing YIG ceramic samples.
CERAMICS INTERNATIONAL
(2021)
Article
Engineering, Multidisciplinary
Tymon Warski, Jerzy Kubacki, Dariusz Lukowiec, Rafal Babilas, Patryk Wlodarczyk, Lukasz Hawelek, Marcin Polak, Bartosz Jozwik, Maciej Kowalczyk, Aleksandra Kolano-Burian, Adrian Radon
Summary: High-entropy ferrites (HEFs) are a new group of oxides with unique magnetodielectric properties, offering possibilities for high-frequency applications. Introducing Mg2+ and Cr3+ ions increases electrical conductivity and dielectric losses of HEFs. Certain HEFs exhibit high reflection losses and absorption properties, particularly at specific temperatures and frequencies. Adding HEFs to 3D printed composites greatly enhances absorption properties.
COMPOSITES PART B-ENGINEERING
(2022)
Article
Chemistry, Physical
Alina Manzoor, Aamir Shahzad, Wolfgang Kuch, Tauqir Shinwari, Ivar Kumberg, Yasser A. Shokr, Muhammad Azhar Khan
Summary: The addition of holmium was found to modify the magnetic and electrical properties of lithium-nickel soft ferrites, as well as the Curie temperature required for high-frequency applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Ceramics
Dongyun Gui, Xiaohu Ren
Summary: W-type Ba1-xLaxCo2Fe16-yAlyO27 hexagonal ferrite was synthesized using the sol-gel auto combustion method. XRD patterns confirmed the formation of the W-type magneto-plumbite structure, while SEM analysis showed a reduction in grain size with La3+ and Al3+ doping. The complex permittivity and permeability were determined in the frequency range of 2 GHz to 18 GHz, and the enhanced EMW absorption was attributed to dielectric and magnetic loss mechanisms, quarter wavelength, and impedance matching. The La-Al doped ferrite exhibited larger dielectric loss compared to pristine Co2W hexagonal ferrite, attributed to increased Fe2+ concentration and reduced grain sizes. The composition x = 0.05 and y = 0.5 showed improved impedance matching and enhanced microwave absorption performance, with a reflection loss of -50.13 dB at 11.9 GHz and 7.0 mm thickness, as well as a -20 dB absorption bandwidth from 11.6 to 12.2 GHz. The prepared La-Al co-doped W-type barium hexaferrites hold potential for microwave absorption applications.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Khalid Muajsam Batoo, Muhammad Hadi, Ritesh Verma, Ankush Chauhan, Rajesh Kumar, Mahavir Singh, Omar M. Aldossary
Summary: This study reports the synthesis of Ba-doped Co-Zn ferrite nanoparticles using the sol-gel auto combustion technique. Various analytical methods were used to confirm the structure, chemical purity, and physical properties of the samples. The findings showed changes in crystallite size, lattice parameter, magnetic properties, and EMI shielding effectiveness with increasing dopant concentration.
CERAMICS INTERNATIONAL
(2022)
Article
Engineering, Electrical & Electronic
Luqman Ali, Cong Wang, Fan-Yi Meng, Kishor Kumar Adhikari, Zhi-Qiang Gao
Summary: This paper presents a fingerprint-structured microwave resonator sensor for simultaneous characterization of permittivity and permeability of magnetodielectric materials. The sensor exhibits high sensitivity and resolution, allowing accurate measurements of the performance of single/multilayer magnetodielectric materials.
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS
(2022)
Article
Environmental Sciences
J. F. Joe Sherin, T. C. Bessy, S. Asha, C. Vijaya Kumar, Dina Huessien, M. R. Bindhu, Rabab Ahmed Rasheed, Khaloud Mohammed Alarjani
Summary: A novel photocatalyst based cobalt doped zinc ferrites nanoparticles (Co-ZnFe2O4 NPs) was prepared and characterized in this study. The results showed that the amorphous ferrites of the samples disappeared with increasing calcinations temperature, affecting the band gap energy and the intensity of photoluminescence peak. Cobalt substitution improved the saturation magnetization and antimicrobial activity of the samples.
ENVIRONMENTAL RESEARCH
(2022)
Article
Materials Science, Multidisciplinary
Neha Rani, Nidhi Sheoran, Rajni Shukla, S. K. Singh
Summary: Li-doped MgO nanostructures fabricated by hydrothermal method were studied for their structural, electronic, and magnetic properties. The X-ray diffraction and field-effect scanning electron microscopy showed changes in crystallinity and morphology, while X-ray photoelectron spectroscopy and electron paramagnetic resonance revealed the increase in Mg defects and related magnetic properties.
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Physical
Jasbir Singh, Charanjeet Singh, Dalveer Kaur, Sukhleen Bindra Narang, Rajshree B. Jotania, Ebtesam Ateia, Amrin Kagdi, Rajat Joshi, A. S. B. Sombra, Di Zhou, Sergei Trukhanov, Larrisa Panina
Summary: In this study, Ba0.5Sr0.5(CoCr)(x)Fe(12-2x)O19 hexaferrite was prepared using a two route ceramic technique, and the influence of Co2+-Cr3+ content on its structural and absorption properties was investigated. The results showed that the absorption peaks shifted to lower frequencies with increasing thickness, and compositions doped with Co2+ and Cr3+ exhibited improved absorption and bandwidth performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Nanoscience & Nanotechnology
Joseph Um, Yali Zhang, Wen Zhou, Mohammad R. Zamani Kouhpanji, Cosmin Radu, Rhonda R. Franklin, Bethanie J. H. Stadler
Summary: Nanomaterials, especially magnetic nanowires, have garnered attention across various fields for their ability to identify objects based on their magnetic signatures. Ferromagnetic resonance (FMR) is the fastest measurement method and shows potential to identify multiple high-frequency signatures simultaneously. Iron, cobalt, and nickel MNW samples were fabricated and measured using an FMR-identification (FMR-ID) system, which was optimized for DC bias fields parallel to the nanowires and microwave frequencies of 20 GHz or higher. This MNW-based FMR-ID labeling system is effective for applications requiring small identification markers.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Physical
Rong Ji, Min Yang, Jingqing Lv, Zihan Wang, Yi Shi, Xiaoli Song, An Xie, Junliang Liu, Ming Zhang
Summary: Surface carboxylation of barium hexaferrite (BaM) provides activated points for the preferential growth of polyaniline (PANI) on BaM particles, leading to tuned morphology and improved complex permittivity. The convex rods and dendrite-like morphology of PANI activate electron transport, enhance interfacial polarization, and result in excellent microwave absorption due to enhanced electromagnetic wave dissipation and combination of losses.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Fei Pan, Mingqiang Ning, Zhenhua Li, Dan Batalu, Hongtao Guo, Xiao Wang, Hongjing Wu, Wei Lu
Summary: In this study, ferromagnetic microwave absorbers with different sequential architectures were designed using a bottom-up self-assembly method. The fibrous samples exhibited the best microwave absorption performance at a breakthrough filler loading of 2 wt%, and the microwave attenuation mechanism was explained by the coupling-enhancement effect between functional units.
ADVANCED FUNCTIONAL MATERIALS
(2023)