Article
Chemistry, Physical
T. Rafique, M. Atif, Atta Ur Rehman, H. Wahab, W. Khalid, Z. Ali, M. Nadeem
Summary: Zinc substituted manganese ferrites were synthesized using the citrate sol-gel route, and their structure, stoichiometry, and properties were analyzed. The results showed that zinc substitution led to samples with excellent resistive and dielectric properties, making it suitable for radar absorbing applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Inorganic & Nuclear
V. Jagadeesha Angadi, A. T. Kozakov, A. V. Nicolski, Y. V. Rusalev, Inas A. Ahmed, S. P. Kubrin, Shifa Wang
Summary: In this study, we investigate the structural, X-ray photoelectron spectroscopy, and magnetic properties of Sr2+ doped Co0.5Ni0.5_xSrxFe2O4 nanomaterials prepared by chemical synthesis. Our results reveal that the position and elemental contributions in the samples are influenced by the content of nickel and strontium ions. Additionally, the vibrating magnetometer study shows that all the samples exhibit ferromagnetic behavior.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Materials Science, Ceramics
S. A. Mazen, A. S. Nawara, N. Abu-Elsaad
Summary: The electrical characteristics of Mn/Co/Cu-substituted Ni-Zn ferrites prepared using the citrate technique were studied in detail by ac impedance spectroscopy. The results showed a significant improvement in dielectric properties and the Ni-Zn-Cu ferrite series displayed the best dielectric performance, suggesting its suitability for high-frequency devices.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
H. F. Abosheiasha, Diaa-Eldin A. Mansour, M. A. Darwish, S. T. Assar
Summary: Until recently, multifunctional epoxy nanocomposites (MENCs) have attracted the attention of researchers due to their tunable properties. This study focuses on epoxy/Li0.5Al0.35Fe2.15O4/Al2O3 nanocomposites with varying Al2O3 content. The samples were characterized and it was found that increasing the Al2O3 nanofillers enhances thermal conductivity but decreases thermal stability. The samples also exhibit soft ferrimagnetic behavior. The study explains the interesting results of decreasing electrical conductivity and dielectric properties for the composite samples based on a dual interface nanolayer model.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Chemistry, Physical
Coutinho Gomes, S. Soreto Teixeira, M. P. F. Graca
Summary: This study proposes a method for synthesizing calcium ferrite particles and characterizes their structural, morphological, and electrical properties. The desired crystalline phase is found in samples treated at 800 and 1000 degrees C, and the sample treated at 1000 degrees C shows the most promising electrical characteristics.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
M. Sertkol, Y. Slimani, M. A. Almessiere, H. Sozeri, R. Jermy, A. Manikandan, S. E. Shirsath, A. UI-Hamid, A. Baykal
Summary: In this study, MnZn spinel nanoferrites were successfully fabricated via ultrasonic irradiation. The structural and morphological analysis were investigated using various instruments. The results showed that the prepared SNFs exhibited superparamagnetic and ferrimagnetic behavior. The saturation magnetization reached the maximum value at an Er and Dy co-doping concentration of 0.04 and decreased with further co-doping concentrations.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
Article
Materials Science, Ceramics
N. Abu-Elsaad, S. A. Mazen, A. Y. Sleem
Summary: The structural, elastic, optical and magnetic properties of Li0.4Zn0.2CrxFe2.4-xO4 (0.0 <= x <= 0.5; step 0.1) nanoferrites synthesized using a citrate precursor were investigated. The addition of Cr3+ ions was found to inhibit grain growth, enhance mechanical strength, and alter the optical and magnetic characteristics of the materials.
CERAMICS INTERNATIONAL
(2022)
Article
Physics, Condensed Matter
T. Rafique, M. Atif, M. Nadeem, T. Meydan, J. Cuenca, W. Khalid, Z. Ali
Summary: Chromium-doped Ni0.3Co0.2Zn0.5Fe2-xCrxO4 (0.0 ≤ x ≤ 0.1) nanoferrites were synthesized via the sol-gel technique, and the influence of cation distribution on their physical properties was investigated.
PHYSICA B-CONDENSED MATTER
(2023)
Article
Materials Science, Ceramics
Ujala Anwar, Junaid Faizan, Ubaid Ur Rehman, Maria Gul, Ghazala Yasmeen, M. Nadeem
Summary: The electrospinning technique is used to synthesize cobalt ferrite/carbon nanofibers, and their structural, electrical, impedance, and electromagnetic shielding properties are comprehensively analyzed. The research demonstrates the significant impact of sintering temperature on the performance of the nanofibers, and highlights their unique resistivity and excellent electromagnetic shielding effectiveness.
CERAMICS INTERNATIONAL
(2023)
Article
Engineering, Chemical
M. Bielicka, U. Klekotka, O. Nowakowska, D. Satula, B. Kalska-Szostko
Summary: The paper presents the synthesis and physicochemical characterization of modified ferrite nanoparticles with doping of Al3+, Cr3+, Cu2+ and Zn2+ ions. The quality, morphology, and magnetic properties of the nanoparticles were influenced by the synthesis method and doping concentration. Two chemical methods were used to synthesize the doped nanoparticles, and various characterization techniques were employed to analyze their properties.
ADVANCED POWDER TECHNOLOGY
(2023)
Article
Chemistry, Physical
Majid Niaz Akhtar, Zainab Mufarreh Elqahtani, Sabih Qamar, Abdullah Almohammedi, M. Irfan, Muhammad Azhar Khan, Muhammad Yousaf, Atif Nazir, Yuzheng Lu, Mustafa Z. Mahmoud, Muhammad Aslam, Z. A. Alrowaili, M. S. Al-Buriahi
Summary: The absorption characteristics of Co, Cu, and Zn-doped Ni-Ce nano ferrites were investigated and it was found that the Zn-doped NiCe absorber showed excellent performance for Ku band absorption applications, making it suitable for next-generation multifunctional absorbers.
SURFACES AND INTERFACES
(2023)
Article
Materials Science, Ceramics
Aref Omri, E. Dhahri, B. F. O. Costa, M. A. Valente
Summary: A systematic study of the structural, electrical, and dielectric properties of NiFeCoO4 nanoparticles synthesized via sol-gel technique has been presented in this article. The analysis includes X-ray diffraction, Raman spectroscopy, dielectric measurements, and complex impedance analysis. The electrical properties and dielectric parameters show significant dependence on temperature and frequency, with one semicircular arc in complex impedance plots representing grains and grain boundaries contributions.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Mariana D. Sosa, Ivana K. Levy, Francis Owusu, Frank Nuesch, Dorina Opris, R. Martin Negri, Leila M. Saleh Medina
Summary: Composite films based on dispersions of bismuth ferrite in polyvinylidene fluoride matrixes with multiwalled-carbon-nanotubes and xanthan gum as additives were successfully prepared. The films exhibited uniform morphology and showed good dielectric and polarization properties under applied stress.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
O. Amorri, M. Khalfa, A. Oueslati, K. Khirouni, A. Aydi, E. Dhahri
Summary: Spinel lithium ferrites, such as Li0.2Cu0.8Fe2O4-d, have been extensively studied due to their technological applications. In this study, Li0.2Cu0.8Fe2O4-d ferrite with a cubic spinel structure was synthesized by the solid-state method, and the effect of copper incorporation was investigated. The results revealed the presence of asymmetrical agglomerations of grains and significant contributions of grains and grain boundaries. The sample exhibited Cole-Cole relaxation type behavior, dispersive AC conductivity variation, and hopping conduction explained by correlated barrier-hopping and nonoverlapping small polaron tunneling mechanisms. Polarization effect, band gap of 1.47 eV, and ferromagnetic behavior were also observed.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Monica Sorescu, Jordan Jubeck, Matthew Knauss, Alice Perrin, Michael McHenry
Summary: This study investigated the structural and magnetic properties of cobalt ferrite nanoparticles exposed to mechanochemical activation with and without graphene nanoparticles. It was found that the degree of inversion decreased with milling time and the canting angle was studied as a function of ball milling time for both sets of samples. The hysteresis loops exhibited a wasp-waist shape when recorded at 5 K in an applied magnetic field of 5 T, and the blocking temperature of the samples was determined using zero-field-cooling-field-cooling measurements.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2021)
