Article
Engineering, Electrical & Electronic
Gia Minh Thao Nguyen, Keisuke Fujisaki, Long Ton That, Satoshi Motozuka
Summary: This article carefully examines the characteristics of iron loss per weight and relative permeability of flake and spherical powders under high frequency sinusoidal excitation. Experimental results show that the flake powder outperforms the spherical powder in terms of iron loss and relative permeability at high frequencies.
IEEE TRANSACTIONS ON MAGNETICS
(2021)
Article
Materials Science, Multidisciplinary
Xin-yu Zhu, Ping Hu, Hai-rui Xing, Fan Yang, Xiao-yu Wang, Song-wei Ge, Xing-jiang Hua, Chao-jun He, Xiang-yang Zhang, Kuai-she Wang
Summary: Nanoporous materials have great potential applications in catalysis, sensing, and fabrication of advanced materials due to their unique microstructure. This study focuses on the thermal decomposition mechanism of ammonium paramolybdate and the fabrication of nanoporous flake molybdenum powder. The results show that with an increase in pH value, the reaction becomes complete, leading to the gradual transformation of powder morphology into flakes with uniform distribution.
MATERIALS CHARACTERIZATION
(2022)
Article
Engineering, Electrical & Electronic
Zhichao Luo, Xinru Li, Chaoqiang Jiang, Teng Long
Summary: This letter reports the characterization of a new nanocrystalline flake ribbon (NFR) soft magnetic material. Comparative analysis between ferrite N87, N27, and NFR was conducted at different temperature, frequency, and peak magnetic flux density. Experimental results demonstrated that the NFR exhibited lower loss density, higher magnetic flux density saturation, and better temperature stability in the range of 85 to 300 kHz. A LCL resonant tank-based circuit was employed for large signal characterization, and the mass-based stacking factor was used to describe the core structure of NFR. This letter suggests that NFR is a promising alternative to ferrite for high power magnetic cores due to its superior performance and flexible structures.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2022)
Article
Chemistry, Inorganic & Nuclear
S. Amraoui, H. Magoussi, Y. Dehmani, B. Ba Mohammed, S. Abouarnadasse, M. Kerouad
Summary: In this study, both experimental and theoretical investigations on Bi2NiCrO6 double perovskite material were conducted. The results showed that Bi2NiCrO6 has a cubic structure and exhibits metallic behavior. Additionally, the material was found to be ferromagnetic.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Materials Science, Ceramics
Abolhassan Najafi, Fahimeh Sharifi, Saloumeh Mesgari-Abbasi, Gholamreza Khalaj
Summary: Zirconium carbide nanopowders were synthesized by the sol-gel method in the alcoholic system. The impact of pH and temperature parameters on the synthesis process of these nanoparticles was evaluated. The properties of the product were assessed using various analysis techniques, indicating that the synthesized nanoparticles had good morphology and crystallinity.
CERAMICS INTERNATIONAL
(2022)
Article
Engineering, Electrical & Electronic
Mengji Gong, Yaqiang Dong, Jianjun Huang, Liang Chang, Yan Pan, Falong Wang, Aina He, Jiawei Li, Xincai Liu, Xinmin Wang
Summary: Toroid-shaped Fe-based soft magnetic powder cores were prepared by combining commercial FeSiCr and carbonyl iron powder insulated with epoxy resin. The research focused on the impact of CIP mass ratio on magnetic properties, optimizing CIP content to achieve higher effective permeability, stable permeability in a wide frequency range, improved DC bias characteristic, and reduced core loss.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Physical
Xiaoyu Sun, Kai Hu, Jielei Tu, Ketong Chen
Summary: This study utilizes the widespread use and antireflective properties of double-layer ARC coatings to achieve a maximum transmittance of 97.6% and super-hydrophobic properties through parameter optimization and structure adjustments. This opens up new possibilities for the application of large outdoor solar photovoltaic power plants.
SURFACES AND INTERFACES
(2021)
Article
Chemistry, Physical
T. Li, Z. Y. Liu, Y. N. Zan, X. Y. Liu, W. G. Wang, D. Wang, B. L. Xiao, Z. Y. Ma
Summary: The SiC coating on graphite flake significantly enhanced the performance of SiC@G(f)/6063Al composites, including bending strength and thermal conductivity. The SiC coating played a positive role in both the processing of graphite flakes and the performance of the composites.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Chemical
Qiang Chi, Liang Chang, Yaqiang Dong, Yiqun Zhang, Bang Zhou, Chengzhong Zhang, Yan Pan, Qiang Li, Jiawei Li, Aina He, Xinmin Wang
Summary: Fe-based amorphous magnetic powder cores with excellent properties were successfully fabricated using a uniform double insulating layer core-shell structure. The hydrothermal oxidation process can control the thickness of the Fe3O4 insulating layer to effectively suppress eddy current loss. FeSiBPC AMPCs exhibit stable magnetic properties and low core loss, making them promising for high-frequency electromagnetic systems.
ADVANCED POWDER TECHNOLOGY
(2021)
Article
Materials Science, Ceramics
Jingang Guo, Hui Zhang, Yule Li, Shengan Yang, Junfeng Li, Qingming Chen
Summary: The effects of different substitution elements on the structure, electrical transport properties, and magnetic properties of La0.64RE0.06Ca0.3MnO3 polycrystalline ceramics were analyzed. The results showed that as the ionic radius of the substitution elements decreases, the cell volume decreases, the grain size increases, the peak resistivity increases exponentially, the metal-insulator transition temperature decreases linearly, the temperature coefficient of resistance first decreases and then increases, and the magnetoresistance gradually increases.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
R. Pena-Garcia, Y. Guerra, S. Castro-Lopes, Y. M. Camejo, Joao M. Soares, A. Franco, E. Padron-Hernandez, M. Cabrera-Baez
Summary: This study analyzed the effects of Sr and Ni doping on the morphological, electronic, and magnetic properties of ZnO nanoparticles, revealing differences in particle shapes, lattice structure changes, and magnetic contributions.
CERAMICS INTERNATIONAL
(2021)
Article
Engineering, Chemical
Ronglin Zhao, Yaqiang Dong, Shouding Wu, Xubin Li, Zhonghao Liu, Xingjie Jia, Xincai Liu, Hang Wu, Wei Gao, Aina He, Jiawei Li
Summary: The study prepared ZrO2 coating layer on FeSiBNbCu spherical powder using the hydrolysis-precipitation method and investigated the magnetic properties of the FeSiBNbCu@ZrO2 nanocrystalline SMPCs. The presence of ZrO2 coating significantly reduces the eddy loss and improves the DC bias performance of the nanocrystalline SMPCs, while slightly decreasing their permeability.
ADVANCED POWDER TECHNOLOGY
(2023)
Article
Materials Science, Ceramics
Yuanting Wu, Xiaojing Chang, Menglong Li, XiPing Hei, Changqing Liu, Xinmeng Zhang
Summary: In this study, the sillenite compound Bi12SiO20 was successfully synthesized via the Pechini sol-gel method, and its excellent photocatalytic performance in the degradation of Rhodamine B was confirmed. The optimal conditions for preparing pure phase bismuth silicate powder were identified through investigation of various experimental factors.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2021)
Article
Engineering, Chemical
Ali Ihsan Kaya
Summary: This study aimed to investigate the mechanical properties of new materials produced by combining TiO2, ZnO, SiO2, and Al2O3 under pressure using the hot pressing technique. The materials were characterized using SEM, EDS, and XRD analyses, and their microhardness and tribological properties were studied. The results showed that increasing the alumina content did not significantly affect the XRD analysis, while SEM and EDS analyses revealed a two-phase structure with complex boundaries. Wear tests indicated that the depth and width of the wear track increased with the wear load. Moreover, the Ti55Si15Zn20Al10 material had the highest weight loss, and increasing the Al2O3 content reduced the weight losses. The microhardness value generally increased with the alumina content in the compounds.
Article
Chemistry, Applied
Martin Timusk, Triin Kangur, Janis Locs, Andris Sutka, Martin Jarvekulg
Summary: The temperature-dependent behavior of alcohol surface tension and the nanoporous nature of sol-gel derived alcogels provide a quick and simple pathway to obtain low-density silica materials without the need for specialized drying conditions. Granular silica with markedly lower density can be produced through simple combustion of sol-gel derived alcogels despite high-temperature annealing.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Bibhutibhusan Nayak, S. Narayana Jammalamadaka
Summary: This article presents a method for remote detection of bovine serum albumin (BSA) using modified cantilever beam magnetometry (CBM). By combining a magnetostrictive Fe70Ga30 cantilever with optical detection technique, researchers were able to detect high concentrations of BSA remotely. The results of this study demonstrate the potential of this method in estimating the magnetostriction of thin films.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Yu Hao, R. E. Camley, Z. Celinski
Summary: Magnetic particles have various applications and their magnetic state is determined by their size and the strength of an applied magnetic field. Numerical simulations were performed to study the effect of an applied field on the critical size of single-domain magnetic particles, and the critical field at which a particle becomes single-domain was determined.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Nitesh Singh, Naresh Kumar, Dharohar Sahadot, Anil Annadi, Vidyadhar Singh, Murtaza Bohra
Summary: The unique magnetic properties of FM/AFM and hard-FM/soft-FM nanocomposite thin films have significant relevance for numerous applications. The composition and performance of different magnetic phases in the nanocomposite films can be significantly affected by the laser ablation conditions and annealing temperature.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Alya Ali Musaed, Samir Salem Al-Bawri, Khaled Aljaloud, Wazie M. Abdulkawi, Mohammad Tariqul Islam, Mandeep Jit Singh, Zaini Sakawi, Husam Hamid Ibrahim
Summary: This research presents a wideband tunable metamaterial for body-centric applications in the millimeter-wave frequency band. The proposed metamaterial has a wide operating frequency range and enhanced gain, making it suitable for improving the antenna performance in 5G wireless communication systems.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Binod K. Rai, Boris Maiorov, Krzysztof Gofryk, Patrick O'Rourke, Catherine Housley, Henry Ajo, Asraf Sawon, Arjun K. Pathak, Narayan Poudel, Qiang Zhang, Travis J. Williams, Matthias Frontzek
Summary: This manuscript reports on the structural and magnetic properties of NdCuGa3. The study confirmed the crystal structure and magnetic phase transition of NdCuGa3 using XRD, neutron diffraction, magnetization, and specific heat measurements. The neutron diffraction data further confirmed the antiferromagnetic phase of NdCuGa3.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Haonan Li, Cong Li, Hailiang Huang, Guodong Hao, Fei Wang
Summary: The electronic structure and ferroelectric-ferromagnetic coupling properties of Y-doped and vacancy-containing GaN-ZnO heterojunctions are systematically investigated. The magnetism in vacancy-containing systems is generated by the spin polarization of unpaired electrons induced by cationic vacancies, while in Y-doped systems, bound magnetic polarons are formed by the orbital hybridization of s-state and d-state electrons of Y-doped elements.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Muhammad Ijaz, Hafeez Ullah, Bandar Ali Al-Asbahi, Mati Ullah Khan, Zaheer Abbas, Sana Ullah Asif
Summary: M-type BaFe11.4-xAlxCo0.6O19 hexaferrites with Al3+ substitutions were synthesized using the co-precipitation method followed by Sonochemical process. The synthesized materials were characterized using XRD, FTIR, UV-vis spectroscopy, VSM, SEM, and LCR meter. The results showed that aluminum doping decreased the band gap and enhanced the magnetic and dielectric properties of the hexaferrites, making them suitable for various applications.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Oleg I. Utesov
Summary: The elementary excitations spectrum of anisotropic frustrated antiferromagnets in the fan phase is discussed. It is found that the low-energy part of the spectrum consists of a gapless phason branch with linear dispersion and a gapped optical branch corresponding to the fan structure amplitude oscillations. In the high-energy part of the spectrum, the excitations are similar to the magnons of the fully polarized phase.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Alexander Ya. Simonovskii, Alexander A. Yanovskii, Arthur R. Zakinyan
Summary: In this study, the departure frequency of vapor bubbles during boiling of ferrofluid in a horizontal magnetic field is experimentally investigated. Two methods, visual and inductive, are used to measure the frequency of bubble departure. The results show that the bubble departure frequency can decrease with increasing magnetic field strength and increase with increasing temperature of the heat-emitting surface. A linear stability analysis is conducted to analyze the influence of the magnetic field on the frequency of bubble formation during ferrofluid boiling.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Oleg Heczko, Michal Rames, Vit Kopecky, Petr Vertat, Michal Varga, Ladislav Straka
Summary: Heusler Ni-Mn-Ga alloys are multiferroic materials that exhibit magnetic shape memory (MSM) phenomena. By doping transition elements into Ni2MnGa alloys, the transformation temperatures can be modified and complex behaviors can be observed, such as the variation in saturation magnetization and the effects of elemental substitution on compound properties.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Carlos Ariel Samudio Perez, Ariel Flaig de Marchi
Summary: This study investigates the electronic and magnetic properties of the Full-Heusler Fe2MnAs alloy using first-principles calculations. The alloy may form spontaneously and exhibits a ferromagnetic order and high spin-polarization. It can be transformed into a half-metal by contracting the lattice constant. Additionally, certain defects contribute to the spin-polarization of the alloy, making it a fully half-metallic material.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Satish Geeri, Aditya Kolakoti, Prasadarao Bobbili
Summary: In this study, an electromagnetic wave-absorbing material was fabricated using a polymer composite material with fiber orientation and Multiwall Carbon Nanotubes as filler materials, along with a Perfect Electric Conducting material. The experiments demonstrated strong electromagnetic absorbing properties for the composites with PEC-coated and non-PEC-coated materials. Mechanical, thermal, and morphological analysis confirmed the similar trend in properties. CRITIC analysis helped identify the sequence order of sustaining properties for the fabricated composites.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Yankai Chen, Ruoxue Zhang, Yukai An
Summary: The piezoelectricity, valley character, and magnetic properties of 2H-VS2 monolayer were studied, revealing its potential applications in spintronics and valleytronics due to its bipolar magnetic semiconductor characteristics and superior physical properties.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Leonardo S. Lima
Summary: This study investigates the thermodynamic quantities, such as entropy, specific heat, and magnetic susceptibility, in the next-nearest-neighbors Heisenberg model on a honeycomb-kagome lattice. The linear spin-wave approach is applied to obtain the temperature-dependent behavior of these quantities. Additionally, the entanglement negativity, a quantifier of quantum entanglement, and the spin Hall conductivity are also studied. The results show that all the thermodynamic quantities, as well as the entanglement negativity and spin Hall conductivity, exhibit an increasing trend with temperature. Furthermore, it is found that all the analyzed quantities approach zero in the low-temperature limit, consistent with experimental observations.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Zhaoxing Wang, Maximilian Kai Reimann, Wang Chen, Yikun Zhang, Rainer Poettgen
Summary: The Mo2FeB2-type compounds RE2Ga2Mg (RE = Tm, Er, Ho) exhibit a large magnetocaloric effect, making them promising for cryogenic magnetic cooling applications.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)