Article
Materials Science, Multidisciplinary
Xueyun Zhou, Jun Wang, Liling Zhou, Dongsheng Yao
Summary: The microstructure, magnetic and elastic properties of Ni0.6-xZn0.4MnxFe2O4 (x = 0-0.6) ferrites prepared by sol-gel auto-combustion method were studied. The XPS results showed the presence of Ni2+, Zn2+, Mn2+, Fe3+ in the specimens. The XRD measurements confirmed that all samples annealed at 1100 degrees C had a pure cubic spinel structure. The lattice parameter and grain size increased with increasing Mn2+ substitution. Mn ions gradually preferred to occupy the A-site in the samples as indicated by Rietveld refinement. The FTIR spectra showed a shift toward low wavenumber, indicating elongation of the bond length, which resulted in a decrease in the elastic constants. The saturation magnetization increased monotonously from 75.6 to 81.6 emu/g as x increased from 0 to 0.6. In addition, the initial permeability increased monotonously from 122.5 to 545.6 due to the transition from NiZn ferrites to MnZn ferrites. Compared with the annealing process in previous work, it was found that cooling in vacuum could improve the microstructure and magnetic properties. The mixed NiZnMn can be applied in high frequency.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Chemistry, Physical
Xueyun Zhou, Jun Wang, Dongsheng Yao
Summary: In this study, RE0.01Ni0.3Zn0.4Mn0.3Fe2O4 (RE=Fe, La, Nd, Sm, Gd, Dy, Yb) ferrites with precisely controlled composition were prepared. It was found that the lattice constant decreases with the increase of atomic number of rare earth. The infrared spectra showed changes in the tetrahedral and octahedral bonds. The introduction of rare earth slightly reduced the saturation magnetization and initial permeability, but had the same effect on Ms. These ferrites exhibited spin glass state or superparamagnetism at high temperature, and Sm, Gd, and Dy doped ferrites displayed unique dielectric properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Xueyun Zhou, Jun Wang, Liling Zhou, Yigao Wang, Dongsheng Yao
Summary: The NixZnyMn1-x-yFe2O4 ferrite ceramics were prepared by the sol-gel auto-combustion method, with different elements affecting the microstructure and magnetic properties differently. The Ni content has a significant impact on the saturation magnetism and Curie temperature. The effect of adding Mn elements on the magnetic properties depends on the content of Zn.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Maha Mostafa, Oday Saleh, Ahmed Maher Henaish, Samir Ali Abd El-Kaream, Ryad Ghazy, Osama M. Hemeda, Ali M. Dorgham, Hanan Al-Ghamdi, Aljawhara H. Almuqrin, M. I. Sayyed, Sergei V. Trukhanov, Ekaterina L. Trukhanova, Alex V. Trukhanov, Di Zhou, Moustafa A. Darwish
Summary: In this study, Ni1-x+2Mgx+2Fe2+3O4 nano-ferrites with different Mg doping levels were synthesized using the auto combustion flash method, and their structural, thermal stability, and magnetic properties were investigated. The results showed that increasing the Mg content delayed the crystallization process and increased the average grain size. The magnetic parameters decreased with increasing Mg content. Additionally, the electrical resistivity of the samples exhibited a semiconductor trend, and the dielectric constant sharply increased at high temperatures, attributed to the enhanced mobility of charge carriers.
Article
Engineering, Electrical & Electronic
Emad Mousa, Mariam M. Haroun, Gamal M. Nasr
Summary: The present study proposes a facile and effective method to enhance the electrical and magnetic properties of polymer/ferrite nanocomposites. By subjecting samples to magnetic treatment during preparation, improvements in DC conductivity, dielectric constant, and saturation magnetization were observed.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Materials Science, Ceramics
Vesna Paunovic, Zoran Prijic, Vojislav V. Mitic
Summary: This paper examined the microstructural and dielectric characteristics of BaTiO3-based ceramics doped with different concentrations of Mn and sintered at different temperatures. The results showed that the grain structure and dielectric constant of the ceramics varied with the Mn concentration and sintering temperature. These findings are important for optimizing the performance and applications of ceramic materials.
SCIENCE OF SINTERING
(2022)
Article
Materials Science, Ceramics
Mamoona Nawaz, M. U. Islam, M. Aamir Nazir, Iram Bano, I. H. Gul, M. Ajmal
Summary: (Co0.5Ni0.5)Cr0.3Fe1.7O4/graphene oxide nanocomposites were fabricated by ultrasonication, showing improved electrical properties with graphene oxide incorporation and tunable magneto-electrical properties for potential high frequency applications.
CERAMICS INTERNATIONAL
(2021)
Article
Polymer Science
S. Soreto Teixeira, Nuno Gama, Teresa Cordeiro, A. Barros-Timmons, Madalena Dionisio, Manuel P. F. Graca, L. Cadillon Costa
Summary: Composites of LiFe5O8 (LFO) particles dispersed in PLLA were prepared by solvent casting, showing a decrease in crystallinity with increasing LFO content, good dispersion of LFO particles, and no interaction with the polymeric matrix. Impedance spectroscopy revealed dynamic relaxation processes at lower LFO content, while conductivity dominated at higher concentrations following the percolation law. Applications can vary depending on LFO content, with energy storage for low concentrations and electromagnetic radiation shielding for concentrations above the percolation threshold.
Article
Crystallography
Jiuyuan Han, Mengjiao Chi, Liu Yang, Bing Liu, Minmin Mao, Hadi Barzegar Bafrooei, Zhongyan Ma, Yingjie Ren, Feng Shi, Ehsan Taheri-Nassaj, Dawei Wang, Kaixin Song
Summary: Dense composites of NaCl-NZO and HB-NZO-NaCl were prepared using the cold sintering process. The resulting ceramic composites showed promising characteristics with comparable permeability and dielectric constants suitable for radio-frequency electronic device applications. These findings indicate potential applications in wireless communication.
Article
Materials Science, Multidisciplinary
S. Udhayakumar, G. Jagadish Kumar, J. Arout Chelvane, K. Kamala Bharathi
Summary: In this study, LiCoxFe5-xO8 nanoparticles with different Co concentrations were prepared by sol-gel method. The detailed structural parameters, Mössbauer spectra, and magnetic properties were analyzed. The results show that the structural parameters and magnetic properties of LiCoxFe5-xO8 nanoparticles change with increasing Co concentration.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Xuening Han, Jie Li, Hao Wu, Kai Sun, Yixin Chen, Lijun Jia, Huaiwu Zhang, Pengjie Zhang, Chunyang Wu
Summary: This paper synthesized Bi-In co-substituted YIG ferrite materials through a conventional solid-state route and investigated their phase formation, microstructure, dielectric and magnetic properties. The results showed that Bi3+ ion substitution could reduce sintering temperature, increase bulk density, improve dielectric constant, and maintain high saturation magnetization, but led to an increase in FMR linewidth.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2023)
Article
Materials Science, Ceramics
C. Murugesan, K. Ugendar, L. Okrasa, Jun Shen, G. Chandrasekaran
Summary: In this study, nanocrystalline Mn-Zn ferrites were synthesized through a solvent-free combustion reaction method and characterized using various techniques. The results showed that Zn substitution affects the crystallite size and electrical properties of the samples, but does not significantly alter the ionic states. The Zn-substituted manganese ferrite nanoparticles hold promise for high-frequency electronic device applications.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Prachi Chaudhary, Rishabh Shukla, Samiksha Dabas, O. P. Thakur
Summary: This study investigates the effects of Nb substitution on the properties of a multiferroic solid solution, revealing significantly enhanced magnetic and dielectric properties in Nb-substituted samples, making them suitable for memory device applications. Additionally, changes in the structure and the coupling between electric and magnetic dipoles were confirmed through various analytical techniques.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Physics, Multidisciplinary
Ali B. Abou Hammad, A. M. Mansour, Amany M. El Nahrawy
Summary: Nano-structure ferromagnetic-ferroelectric composite materials prepared by the sol-gel method, such as Potassium Barium titanate doped with Ni2+ nanoparticles, exhibit enhanced thermal stability and optical bandgap. The incorporation of Ni2+ nanoparticles can alter the structural and band structures interactions, leading to efficient charge carrier transfer.
Article
Chemistry, Physical
S. Udhayakumar, G. Jagadish Kumar, E. Senthil Kumar, M. Navaneethan, K. Kamala Bharathi
Summary: The study investigated the magnetic anomalies of Sr-doped LiFe5O8 materials, showing that Sr doping leads to low-temperature magnetic anomalies and exhibits hard magnetic behavior.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Ebtesam E. Ateia, M. K. Abdelmaksoud, M. M. Arman, Amira S. Shafaay
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2020)
Article
Materials Science, Multidisciplinary
Ebtesam E. Ateia, Rania Ramadan, Amira S. Shafaay
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2020)
Article
Materials Science, Multidisciplinary
Ebtesam E. Ateia, Amira T. Mohamed, Mahmoud Maged, Ahmed Abdelazim
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2020)
Article
Polymer Science
Ebtesam E. Ateia, B. Hussein, Charanjeet Singh, N. Okasha
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2020)
Article
Polymer Science
Ebtesam E. Ateia, H. Ismail, Hassan Elshimy, M. K. Abdelmaksoud
Summary: In this study, nanoparticles were synthesized by partially substituting lanthanum for rare earth elements, and their crystal structure, morphology, magnetic and optical properties were systematically investigated. The experimental results show that the magnetic properties of the samples were significantly enhanced through lanthanum-rare-earth substitution, particularly in terms of coercivity for Sm0.7La0.3FeO3 sample.
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Ebtesam E. Ateia, K. K. Meleka, F. Z. Ghobrial
Summary: The substitution of Al content in CoFe2-xAlxO4 ferrite leads to a reduction in particle size, lattice parameter, and magnetic properties, with a corresponding impact on the saturation magnetization. The study establishes a strong correlation between cation distribution, bond angle, bond length, and the magnetic properties of the investigated samples.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Engineering, Electrical & Electronic
Ebtesam E. Ateia, Mahmoud A. Ateia, M. M. Arman
Summary: In this study, Li1.1Co0.3Fe2.1O4 ferrite nanoparticles were synthesized using the citrate auto-combustion method. The distribution of cations and crystal structure were analyzed, indicating potential applications in microbatteries and wastewater treatment. Adsorption mechanism was studied using Freundlich and Langmuir isotherms, showing high adsorption efficiency and easy recyclability of the synthesized sample.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Materials Science, Multidisciplinary
Ebtesam E. Ateia, Mahmoud A. Ateia, Motaz G. Fayed, Soliman El-Hout, Saad G. Mohamed, M. M. Arman
Summary: The synthesis of Li1.1Co0.3Fe2.1O4 ferrite nanoparticles has been successfully fabricated using the citrate auto combustion technique. Various characterization techniques were employed to analyze the nanoparticles, and it was found that they exhibited large capacity, stellar coulombic efficiency, and superb cycle stability. Moreover, the nanoparticles showed superior electrochemical performance when used as an anode for lithium-ion batteries.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Polymer Science
Ebtesam E. Ateia, Kareem Elsayed, Rania Ramadan
Summary: The development of hexaferrite nanoparticles as potential sorbents for the removal of chromium (Cr) ions from aqueous solutions is studied. Co-doped BaFe12O19 hexaferrite compounds are successfully synthesized and their structure, surface morphology, and magnetic properties are investigated. The nanoparticles exhibit high adsorption capacity for Cr (VI) and the pseudo-second-order kinetic model fits the experimental data well.
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2022)
Article
Physics, Multidisciplinary
Ebtesam E. Ateia, B. Hussein, Charanjeet Singh, M. M. Arman
Summary: Multifunctional nanoparticles with material composition GdFe0.9M0.1O3; M = Ag, Co, and Cr have been successfully synthesized using the citrate auto-combustion technique. Structural, magnetic, thermoelectric, and antibacterial properties of the samples were investigated, with the use of silver metal particles as antibacterial agents showing advantages in terms of stability and low toxicity.
EUROPEAN PHYSICAL JOURNAL PLUS
(2022)
Article
Materials Science, Multidisciplinary
Y. A. Saeid, Ebtesam E. Ateia
Summary: Rare-earth doped calcium nano ferrites have been successfully synthesized and characterized in this study. The samples exhibit an orthorhombic structure and their magnetic properties are influenced by super exchange interactions. The high efficiency of removing heavy metal ions in water solution is also demonstrated. This research is of great significance for environmental pollution control.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Physics, Applied
Ebtesam E. Ateia, Asmaa Abd Allah, Rania Ramadan
Summary: In this study, graphene oxide was prepared using the modified Hummer's method and its effect on the structure, morphology, electrical, and magnetic properties of Mg0.85K0.3Fe2O4 was investigated. The results showed that graphene oxide has a significant effect on the magnetic properties of the nanocomposites.
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
(2022)
Article
Materials Science, Multidisciplinary
Mahmoud A. Ateia, Ebtesam E. Ateia, Mohamed Mosry, M. M. Arman
Summary: A humidity sensor is crucial for determining the efficiency of materials and precision of apparatuses. In this study, a Li1.1Co0.3Fe2.1O4 mesopore sensor was synthesized and its sensitivity to humidity was confirmed through experiments and modeling, suggesting its potential use as a humidity sensing element.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Ebtesam E. Ateia, Kareem Elsayed, D. E. El-Nashar
Summary: The present work successfully synthesized and designated a 50% BaFe11.5Co0.5O19 /50% NBR nanocomposite with enhanced physical properties. BaFe11.5Co0.5O19 hexaferrite was synthesized using the citrate auto-combustion technique, and composite nanoparticles were synthesized using the melt mixing technique. The addition of BFCO nanoparticles improved the tensile strength, Young's modulus, hardness, and rheometric characteristics of the NBR polymer.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Physics, Applied
Ebtesam E. Ateia, Y. A. Saeid, M. K. Abdelmaksoud
Summary: This study investigates the core-shell structure of rare-earth-doped calcium ferrite nanoparticles (RCFNPs) coated with polyethylene glycol (PEG). The presence of PEG is confirmed by the XRD pattern, which shows two peaks attributable to PEG and other peaks related to orthorhombic structure. Analyzing the obtained samples using EDAX and XPS, it is revealed that the PEG-coated RCFNPs have a well-designed hexagonal core/shell structure. The magnetic hysteresis loops suggest that the prepared samples exhibit suitable properties for ultra-high-density recording performance.
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
(2023)