Article
Chemistry, Physical
Zongliang Zheng, Xu Wu, Fengjiao Li, Ping Yin, Vincent G. Harris
Summary: Ni0.5Zn0.3Co0.2Fe2O4/epoxy magnetodielectric composites synthesized through a solvent-assisted method exhibit tunable permeability and permittivity, low losses and high refractive index in the VHF and UHF frequency bands. The characteristics of the composite materials change with an increase in epoxy weight fraction, while maintaining excellent radio frequency properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Ceramics
Hai-Shan Guo, Le-Zhong Li, Rui Wang, Zhe Xiong, Yong-Li Yan, Zi-Chen Zhong, Xin Chang
Summary: The substitution of Cd2+ ions for Zn2+ ions in NiZnCo ferrites causes lattice distortion, decreases saturation magnetization, increases coercivity, increases dielectric constant, decreases dielectric loss, and decreases DC resistivity. These changes provide excellent electrical and magnetic properties, which can be beneficial for the development of high-frequency miniaturized electronic equipment.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Navneet Kaur, Apoorva Katoch, Satyendra Singh, Raminder Kaur
Summary: In this study, zirconium ferrite nanoparticles were synthesized by hydrothermal method and then calcined. The results showed that crystal phases were formed and the average crystallite size increased with the temperature. The surface morphology of the particles was observed using FESEM. UV-vis absorption spectra were used to determine the optical band gap, which decreased with the temperature. The photocatalytic degradation of Rhodamine-B (RhB) by zirconium ferrite nanoparticles was achieved with the sample calcined at 700 degrees C.
Article
Materials Science, Multidisciplinary
Antaz Ali, M. S. I. Sarker, Minhajul Islam, M. K. R. Khan, F. A. Khan, M. N. I. Khan, M. M. Rahman
Summary: In this study, the effect of In on superparamagnetic CoInxFe2-xO4 nanoparticles prepared through one step hydrothermal method was reported. The presence of In ions in the matrix was found to change the structural and magnetic properties of CoFe2O4, confirmed by XRD and magnetic analyses. The decrease in crystallite size and the range of particle size depending on In content were observed.
RESULTS IN PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
Sitchai Hunpratub, Tossaporn Chullaphan, Somchai Chumpolkulwong, Narong Chanlek, Sumalin Phokha
Summary: The electrochemical performance of carbon was improved by forming composites with CeO2 nanoparticles. The composites were prepared using hydrothermal treatment with PVP or NaOH. XRD, Raman, and TEM confirmed the formation of a composite between carbon and CeO2 nanoparticles. The capacitance values of the carbon/CeO2 composites were higher than that of carbon due to the redox reaction of Ce3+/Ce4+ within the CeO2 nanoparticles.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Physical
Charanjeet Singh, Maria Vesna Nikolic, Sukhleen Bindra Narang, Antonio Sergio Bezerra Sombra, Di Zhou, Sergei Trukhanov, Larrisa Panina, Jasbir Singh, Alex Trukhanov
Summary: This study focuses on the preparation and microwave characterization of composites of M-type hexagonal ferrite with paraffin wax. The influence of Sr2+ ion content on material parameters, including grain morphology, dielectric, magnetic, conductivity, and reflection loss properties, was analyzed. The results indicate that higher Sr2+ ion content leads to lower dielectric and magnetic loss tangent, as well as increased AC conductivity with frequency.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Biochemistry & Molecular Biology
Patricia Gomes, Barbara Costa, Joao P. F. Carvalho, Paula I. P. Soares, Tania Vieira, Celia Henriques, Manuel Almeida Valente, Silvia Soreto Teixeira
Summary: Cancer is a leading cause of death worldwide and traditional treatments have limitations and severe side effects. Magnetic hyperthermia is an alternative method that can be used alone or in conjunction with chemotherapy or radiotherapy. The use of cobalt ferrite particles synthesized through an innovative biogenic sol-gel method was evaluated for its suitability in magnetic hyperthermia applications through thermal, structural, magnetic, and cytotoxic analyses.
Article
Engineering, Electrical & Electronic
Huanhuan Yang, Tong Li, Liming Xu, Xiangyu Cao, Liaori Jidi, Zexu Guo, Pei Li, Jun Gao
Summary: This article presents a novel design strategy for reducing radar cross section (RCS) in the working band of antennas, using a combination of metasurface and antenna design to achieve low in-band RCS for microstrip patch antennas. The design also includes a frequency reconfigurable antenna derived from the radiation and scattering mechanism of the novel antenna, with a 4x4 array developed to achieve in-band RCS reduction while maintaining radiation performance. Experimental results confirm the effectiveness of the proposed strategy.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2021)
Article
Materials Science, Ceramics
Nengchao Wang, Yao Ying, Jingwu Zheng, Wangchang Li, Liang Qiao, Wei Cai, Juan Li, Shenglei Che
Summary: In this work, Mn-Zn power ferrites with low loss operating in the frequency range of 0.5-3 MHz were successfully fabricated, with an optimal Co3O4 content of 0.35 wt%. The material exhibited ideal power loss characteristics over a broad temperature range and is suitable for high-frequency power conversion electronics applications.
CERAMICS INTERNATIONAL
(2021)
Article
Engineering, Electrical & Electronic
Tian-Qi Fan, Botao Jiang, Ruizhi Liu, Jianping Xiu, Yue Lin, Hongtao Xu
Summary: A low-profile double U-slot microstrip patch antenna with a wide operating bandwidth has been developed. Simple design rules are provided for excellent first-pass design and desired characteristics. The measured results are in good agreement with the simulated results, showing a 50% increase in bandwidth.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Engineering, Electrical & Electronic
Sichao Wen, Yizhen Xu, Yuandan Dong
Summary: The study presents a novel low-profile dual-polarized omnidirectional antenna for LTE band operation, achieving omnidirectional radiation through a unique structure for both horizontally and vertically polarized signals, solving issues like matching deterioration and feeding intersection.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2021)
Article
Engineering, Electrical & Electronic
Zhan Wang, Shuxuan Liu, Yuandan Dong
Summary: This article presents a novel low-profile meta-surface-based tripolarized antenna with complementary patterns for 5G applications. The antenna is designed to operate in multiple polarizations using TM10, antiphase TM20, and TM00 modes. The fabricated antenna demonstrates good bandwidth, high radiation efficiency, and gain performance suitable for sub-6 GHz 5G communication systems.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2021)
Article
Materials Science, Ceramics
Yao Ying, Jiawei Feng, Zhaocheng Li, Jingwu Zheng, Jing Yu, Wangchang Li, Liang Qiao, Wei Cai, Juan Li, Hui Huang, Tiejun Zhao, Shenglei Che
Summary: In this study, MnZn ferrites with added YIG nanoparticles were developed for MHz frequency applications. It was found that a small amount of added YIG effectively reduces the power loss and increases the initial permeability of MnZn ferrites. The optimal MnZn ferrite with 600 ppm added YIG showed a significant reduction in power loss, an increase in initial permeability, and good stability against temperature.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Multidisciplinary
Yao Ying, Xiao Hu, Zhaocheng Li, Jingwu Zheng, Jing Yu, Wangchang Li, Liang Qiao, Wei Cai, Juan Li, Hui Huang, Tiejun Zhao, Shenglei Che
Summary: Low power loss manganese ferrites in the frequency range of 1-3 MHz have been developed by adding Ta2O5, exhibiting excellent temperature stability and P-cv performance.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Xingli Wang, Guang Che, Tian Cui, Fubo Tian, Long Yuan, Rong Fu, Weiting Yang, Xiaofeng Wu
Summary: We introduced an in-situ one-step hydrothermal method to prepare spinel films with nanostructures on low-cost Fe-Cr alloy substrates. The synthesized spinel film showed excellent low reflectance in the range of 0.3-2.5 µm and 2.5-13 µm, with values of 4.34% and 4.99% respectively, due to its uniform nano-micron structure on the surface. The spinel film can be an ideal candidate for ultra-wideband low-reflectance materials to improve the high precision of optical instruments.
