Article
Engineering, Electrical & Electronic
Ninad Velhal, P. B. Kashid, Gopal Kulkarni, D. C. Kulkarni, Hesham S. Almoalim, Sulaiman Ali Alharbi, Vijaya Puri, S. V. Prabhakar Vattikuti
Summary: Hexaferrites, including a cobalt-substituted barium hexaferrite with a mixed M+Y phase, were synthesized using a coprecipitation method. The hexaferrite exhibited low coercivity values and high microwave absorption properties, making it a potential candidate for MAMs and RAMs applications.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Physical
Liang Zhou, Huan Xu, Gexin Su, Libin Zhao, Hongbo Wang, Zhenjun Wang, Zhuo Li
Summary: By controlling the TEOS content, the microwave absorption properties of SiO2-coated FeSiAl absorbents were significantly enhanced, with a wide effective absorption bandwidth.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Electrical & Electronic
Nyathani Maramu, D. Ravinder, T. Anil Babu, M. Srinivas, B. Ravinder Reddy, G. Sriramulu, Katlakuntla Sadhana, N. V. Krishna Prasad
Summary: A series of silver-doped strontium hexaferrite were synthesized by the Co-precipitation method, and their crystal structure, morphology, and microwave absorption properties were studied. The results showed that the lattice parameters increased and grain size decreased with the increase of Ag doping, leading to improved microwave absorption properties in X-band frequencies. The study confirmed the nature of microwave absorption for Ag-doped strontium hexaferrite.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Yaqi Xiao, Xiaowen Luan, Xi Wang, Guoqiang He, Xin Qu, Shan Deng, Kaiyang Liu, Jinghang Qian, Xiuli Chen, Huanfu Zhou
Summary: Sr1 + xNd2Al2O7 + x ceramics prepared by the reaction-sintering method exhibit excellent microwave dielectric properties. Compared to the solid-state reaction method, the reaction-sintering method has lower cost and a simpler preparation process.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Chemistry, Physical
Tuba Yener, Isa Araz, Ahmet Kirsoy, Orhan Yalcin, Mustafa Okutan, Peter Haring Bolivar
Summary: In this study, a Ce3+ -Cu2+ doped barium hexaferrite composite sample was synthesized and its phase composition, morphology, and magnetic properties were analyzed. The complex permittivity, permeability, reflection loss, absorption loss, and shielding effectiveness were measured using VNA and VSM. The phase changes in the crystal structure due to the doping of Ce3+ and Cu2+ ions were investigated.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
Article
Materials Science, Multidisciplinary
Jun-Ki Kim, Pyeong-Yeol Yu, Young-Min Kang
Summary: A wideband electromagnetic wave absorber for the X-band has been designed using M-type hexaferrite, with the optimal EM absorption properties achieved by adjusting the Co and Ti content. Addition of carbon nanotubes significantly enhances absorption performance, while excessive content weakens overall absorptive capabilities.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Muhammad Zarrar Khan, Iftikhar Hussain Gul, Farhan Javaid, Ahmed Ali, Saiqa Hafeez, Mutawara Mahmood Baig
Summary: Novel compositions of Ba0.5Sr0.5Fe12-1.1xZrxY0.1xO19 (0.0=x=0.5) nanoparticles were synthesized using sol-gel citrate precursor method. X-ray diffraction confirmed the formation of magneto-plumbite hexagonal phase with average crystallite size of 55-70 nm. The fourier transformed infrared spectroscopy revealed the presence of metal cations vibrational modes in 460-600 cm(-1) range. The Zr-Y contents influenced magnetic behavior and shielding properties with maximum total shielding effectiveness of -31 dB in K band, and -21 dB in X-band, observed for x=0.35. The microwave absorption studies revealed optimum reflection losses with maximum value of -32 dB at 6.4 GHz frequency for x=0.35. The obtained values validate the candidacy of Zr-Y substituted Ba-Sr hexaferrite nanoparticles for uninterrupted airborne surveillance, radar absorption and high frequency shielding applications.
MATERIALS RESEARCH BULLETIN
(2023)
Article
Materials Science, Multidisciplinary
Eun-Soo Lim, Hyungsuk K. D. Kim, Young-Min Kang
Summary: La-Co-Ti substituted Sr-hexaferrite powder-epoxy composites were fabricated for electromagnetic wave absorption. The electromagnetic absorption frequency range can be controlled by varying the substitution x, leading to high EM absorbing performances suitable for X band and millimeter range applications.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Peng Wang
Summary: The compounding of Fe3BO5 with FeNi alloy particles significantly adjusts the electromagnetic parameters, optimizes impedance matching, and improves microwave absorption performance. When the thickness is 1.5 mm, the absorption bandwidth (RL <= -10 dB) ranges from 12 GHz to 18 GHz with a width of 6.0 GHz, and the RL peak reaches -37.57 dB at 15.45 GHz, indicating that Fe3BO5 is effective in improving the microwave absorption performance of soft magnetic alloy particles.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Pyeong-Yeol Yu, Young-Min Kang
Summary: The research reported on the tunable electromagnetic wave absorption properties of Fe-deficient SrFe9.6-xCo1.2Ti1.2O19 hexaferrite-epoxy composites. As the Fe content decreased with increasing x, the ferromagnetic resonance (FMR) frequency also decreased gradually, leading to changes in the electromagnetic absorption frequency range.
CURRENT APPLIED PHYSICS
(2021)
Review
Materials Science, Multidisciplinary
Anas Houbi, Zharmenov A. Aldashevich, Yomen Atassi, Z. Bagasharova Telmanovna, Mirzalieva Saule, Kadyrakunov Kubanych
Summary: This article mainly introduces the ferrite components in high-performance microwave absorbing composites, focusing on their absorption characteristics, preparation methods, and microwave absorption mechanisms.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2021)
Article
Mechanics
Wuzhou Li, Zhenqian Lu, Xueqiang Liu, Wei Chen, Chunxia Wang, Fujun Xu
Summary: In this work, the complex dielectric constant of 3D woven spacer composites (3DWSC) with integrated structure was modulated by the content of carbon nanotubes (CNTs) in the epoxy foam sandwich. The theoretical model for predicting the dielectric constant of 3DWSC-CNT/epoxy foam was proposed, and the excellent mechanical properties of the material were demonstrated. The absorption performance and radar cross section (RCS) reduction were calculated, showing potential practical applications in anti-radar detection.
COMPOSITE STRUCTURES
(2023)
Article
Materials Science, Ceramics
Ning Wang, Kok Yeow You, V. Mohanavel, Sadok Mehrez, Sagr Alamri, Kaushik Nag, Ibrahim Mahariq
Summary: Recently, the use of RF/microwave communication and non-communication devices has become unavoidable for the public, leading to constant exposure to radiation from these devices, which can negatively impact long-term health and cause interference and coupling effects. In this study, a novel and high-performance absorber material, including GdMnO3, MoSe2, and mixtures of GdMnO3-MoSe2 (GdMo) with different filler loadings, was created and analyzed. The macroscopic properties of the synthesized materials were modeled using the Lorentz dispersion model, and it was found that GdMo with 40 wt% filler loading exhibited the best microwave absorption performance. This material, with an optimized thickness and a metal plate backing, achieved a minimum reflection loss value of better than -20 dB at the X-band operating frequency.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Yan Wang, Haiyan Zhang, Qibai Wu, Shengkai Li, Heng Gao, Baoshan Wan, Daofeng Wen, Guoxun Zeng
Summary: In this study, MXene composites decorated with Fe3O4 nanoparticles were prepared to improve the electromagnetic attenuation performance in the microwave and millimeter-wave frequency bands. The MXene layers were distributed with Fe3O4 nanoparticles, forming a sandwich-like microstructure. By adjusting the thickness of the absorber, the minimum reflection loss (RLmin) can be up to -66.25 dB, and the maximum effective absorption bandwidth (EAB) can be up to 8.49 GHz. The MXene/Fe3O4 composites show superior EMW absorption performance in microwave and millimeter-wave frequency bands due to the synergistic effects and structural advantages of Fe3O4 and MXene.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Materials Science, Multidisciplinary
Yusuf Sani, Raba 'ah Syahidah Azis, Ismayadi Ismail, Yazid Yaakob, Muhammad Khalis Abdul Karim, J. Mohammed, Bello Murtala Alhaji
Summary: This paper reports the development of ultra-wide bandwidth microwaves using thin-thickness absorbers with enhanced microwave absorption. A strategic approach was highlighted to obtain the ultrawide, thin, and high impedance matching of the absorber. The effectiveness of different nanocomposite absorbers were measured and credited with effective ultra-wide bandwidth microwave absorption. This report is important for paving future work in obtaining a desired thin and ultra-wide bandwidth absorber.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Energy & Fuels
Bin Yuan, Yuanguang Yang, Xin Tang, Yingquan Xie
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2015)
Article
Energy & Fuels
Yuanguang Yang, Bin Yuan, Qinliang Sun, Xin Tang, Xie Yingquan
JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
(2015)
Article
Polymer Science
Xin Tang, Bin Yuan, Yuanguang Yang, Yingquan Xie
JOURNAL OF APPLIED POLYMER SCIENCE
(2016)
Article
Chemistry, Physical
Xin Tang, Yuanguang Yang
APPLIED SURFACE SCIENCE
(2009)
Article
Chemistry, Multidisciplinary
Xin Tang, Jin Huang, Linjie Kang, Chang Nie, Xing Lin
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2012)
Article
Materials Science, Characterization & Testing
Xin Tang, Xuzeng Hu, Haodong Wan
Summary: In this study, a novel amphoteric polymer TH-1 was synthesized using four monomers and used as a filtrate loss reducer in oil well cementing. TH-1 exhibited excellent properties such as filtrate reduction, thermal stability, and saline tolerance. By forming an adsorption membrane on the surface of cement particles through electrostatic attraction, TH-1 efficiently reduced fluid loss in cement slurry.
POLYMERS & POLYMER COMPOSITES
(2021)
Article
Chemistry, Physical
J. Zamora, T. Bautista, N. S. Portillo-Velez, A. Reyes-Montero, H. Pfeiffer, F. Sanchez-Ochoa, H. A. Lara-Garcia
Summary: Experimental and DFT studies were conducted on the structural, magnetic, and optical properties of RFeO3 perovskites. The perovskites exhibited an orthorhombic crystal structure and weak ferromagnetic behavior. They were confirmed to be semiconductors with a bandgap of approximately 2.1 eV.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xianxiang Lv, Jing Jin, Weiguang Yang
Summary: By depositing TiN and TiO2 surface layers on AlSi films, the electrochemical performance of silicon-based anodes can be significantly improved, suppressing volume expansion and promoting the formation of a stable SEI layer.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Sharafat Ali, Haider Ali, Syedul Hasnain Bakhtiar, Sajjad Ali, Muhammad Zahid, Ahmed Ismail, Pir Muhammad Ismail, Amir Zada, Imran Khan, Huahai Shen, Rizwan Ullah, Habib Khan, Mohamed Bououdina, Xiaoqiang Wu, Fazal Raziq, Liang Qiao
Summary: The construction and optimization of redox-heterojunctions using a bifunctional phosphate as an electron-bridge demonstrated significant improvements in photo catalytic activity, including enhanced dispersion, reduced interfacial migration resistance, and increased abundance of active-sites.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ren-Ni Luan, Na Xu, Chao-Ran Li, Zhi-Jie Zhang, Yu-Sheng Zhang, Jun Nan, Shu-Tao Wang, Yong-Ming Chai, Bin Dong
Summary: Extensive research has revealed that oxygen evolution reaction (OER) in alkaline conditions involves dynamic surface restructuring. The development and design of sulfide/oxide pre-catalysts can reasonably adjust the composition and structure after surface reconstruction, which is crucial for OER. This study utilized a simple two-step hydrothermal method to achieve in situ S leaching and doping, inducing the composition change and structure reconstruction of CoFe oxides. The transformed FeOOH and CoOOH exhibited excellent OER activity and could be easily mass-produced using low-cost iron based materials and simple methods.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jun'an Lai, Daofu Wu, Peng He, Kang An, Yijia Wang, Peng Feng, WeiWei Chen, Zixian Wang, Linfeng Guo, Xiaosheng Tang
Summary: Zero-dimensional organic-inorganic metal halides (OMHs) are gaining attention in the fabrication of light-emitting diodes due to their broad emission band and high photoluminescence quantum yield. This work synthesized a zero-dimensional organic tetraphenylphosphonium bismuth chloride (TBC) that showed efficient blue light emission, with the emission mechanism attributed to the transition of Bi3+ ions. White light-emitting diodes (WLEDs) were fabricated using TBC, along with green-emitting and red-emitting single crystals, achieving single-component white emissions. These findings demonstrate the different emission mechanism of ns2 ions-based OMHs and highlight the potential of bismuth-based OMHs in WLEDs applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xuewei Liang, Yunhai Su, Taisen Yang, Zhiyong Dai, Yingdi Wang, Xingping Yong
Summary: The revolutionary design concept of high-entropy alloys has brought new opportunities and challenges to the development of advanced metal materials. In this work, AlCrCuFe2NiTix high-entropy flux cored wires were prepared by combining the design idea of a high-entropy alloy with the characteristics of flux cored wire. AlCr-CuFe2NiTix high-entropy surfacing alloys were prepared using gas metal arc welding technology. The wear properties of the alloys were analyzed, and the phase composition, microstructure, strengthening mechanism, and wear mechanism were discussed. The results show that the alloys exhibit a dendritic microstructure with BCC/B2 + FCC phases. Increasing Ti content leads to the precipitation of Laves phase. The alloys show improved microhardness and wear resistance due to the precipitation of coherent B2 and Laves phases. However, excessive Ti addition results in the increase of Laves phase and reduced wear resistance of the alloys.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
M. Vadivel, M. Senthil Pandian, P. Ramasamy, Qiang Jing, Bo Liu
Summary: This work presents the enhanced photocatalytic and electrochemical performance of g-C3N4 assisted PAA on CoFe2O4 ternary nanocomposites. The incorporation of PAA and g-C3N4 improves the separation efficiency of photogenerated charge carriers, resulting in superior photocatalytic degradation and high specific capacitance values.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Vibhu T. Sivanandan, Ramany Revathy, Arun S. Prasad
Summary: In this study, pure and doped cobalt ferrite nanoparticles were prepared using the sol-gel auto-combustion method with the aid of lemon juice as eco-fuel. The crystal structure, lattice parameter, crystallite size, microstrain, optical parameters, and room temperature magnetic properties of the samples were analyzed. The effect of doping on the magnetic properties was also investigated.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qing Guo, Bowen Zhang, Benzhe Sun, Yang Qi
Summary: This study prepared ZnO films with various nonpolar preferred orientations using conventional chemical bath deposition method and characterized their growth process and mechanism. It was found that the type and concentration of nitrate could control the preferred orientation and surface roughness of ZnO films. Additionally, ZnO films with different preferred orientations exhibited different optical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Chong Zhang, Yan Liu, Zhaoyan Wang, Hang Yang
Summary: In this study, six bimetallic FeCo particles were synthesized via the hydrothermal method at different Fe:Co ratios. The Fe:Co ratio not only modulates the composition of the particles but also influences their structure and magnetic properties. The FeCo alloys showed a transformation from an Fe-based structure to a Co-based structure with increasing Co content. The Fe:Co ratio of 1:1 and 3:1 resulted in particles with the highest and lowest saturation magnetization, respectively.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jianning Zhang, Jing Li, Yiren Wang, Xiaodong Mao, Yong Jiang
Summary: We conducted a study on the formation of ultra-fine Y-Ti-Ta-O nano-oxides in Ta+B micro-alloyed 13CrWTi-ODS alloys using electron microscopy and first-principles calculations. The Y-Ti-Ta-O nano-oxides were found to be mainly Y2(Ti,Ta)2O7, with an average size of 7 nm and a number density of 6.8 x 1023 m-3. Excess boron was found to enhance the adhesion of some low-sigma grain boundaries but weaken the Fe/Y2Ti2O7 interface, while excess tantalum enhanced the Fe/Y2Ti2O7 interface but caused serious degradation of grain boundaries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Yirong Fang, Pei Cheng, Hang Yuan, Hao Zhao, Lishu Zhang
Summary: A new composite system of nitrogen-doped reduced graphene oxide and black phosphorus quantum dots has been developed for tumor therapy, showing improved electrochemical properties and stability. The system generates hydrogen peroxide and hydroxyl radical to effectively kill tumor cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xiufang Qin, Yuanli Ma, Hui Zhang, Ting Zhang, Fang Wang, Xiaohong Xu
Summary: The structure and magnetism of cobalt ferrites after Mn2+-Tb3+ co-doping were studied. Co-doped samples exhibited cubic spinel structure and spherical shape of ferrite nanoparticles. The redistribution of Co2+ and Fe3+ ions between octahedral and tetrahedral sites was observed due to Mn2+-Tb3+ co-doping. The coercivity and magnetization saturation of co-doped samples were significantly improved, leading to a maximum energy product that is 190% higher than that of the un-doped sample.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ho Yeon Lee, Wonjong Yu, Yoon Ho Lee
Summary: Recently, there has been an increasing interest in developing ultra-fine nanostructured electrodes with extensive reaction areas to enhance the performance and low-temperature operation of solid oxide fuel cells. The use of a refined approach involving co-sputtering metal alloys and oxide targets has demonstrated the feasibility of nano-columnar structures in perovskite-based electrodes, expanding the temperature range of thin film electrodes. This study systematically examines the effects of chamber pressure control in the co-sputtering process and identifies the intricate relationship between sputtering pressure and film structure. By fine-tuning the columnar growth in the electrode, significant improvements in performance and thermo-mechanical properties were achieved, resulting in high-performance all-sputtered solid oxide fuel cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qianyun Bai, Xiaoxiao Yan, Da Liu, Kang Xiang, Xin Tu, Yanhui Guo, Renbing Wu
Summary: This study proposes a simple method to develop a non-precious transition metal-based electrocatalyst with high catalytic activity and robustness for the hydrogen evolution reaction. The as-synthesized electrode exhibits a low overpotential and high current density, indicating its potential in energy conversion.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)