Article
Physics, Applied
Michele Petrecca, Beatrice Muzzi, Stefano Maria Oliveri, Martin Albino, Nader Yaacoub, Davide Peddis, Cesar de Julian Fernandez, Claudia Innocenti, Claudio Sangregorio
Summary: The article discusses the exploitation of exchange coupling between hard and soft magnetic materials to enhance the magnetic performance of rare-earth free permanent magnets. It reports the synthesis of nanometric SFO and zinc-doped ferrite composites through scalable and eco-friendly approaches. Despite promising results in forming exchange coupled composite at 1100 degrees C, there was no improvement in energy product, indicating a need for further experimental efforts.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Physics, Condensed Matter
Sushree Nibedita Rout, Murli Kumar Manglam, Jyotirekha Mallick, Subhadeep Datta, Manoranjan Kar
Summary: Al-substituted strontium hexaferrite (SrFe12-xAlxO19) was synthesized by the sol-gel auto-combustion method and microwave sintering at 1100 degrees C. The XRD patterns showed hexagonal crystal symmetry with P6(3)/mmc space group. Lattice contraction was observed with increasing Al3+ concentration in SrFe12-xAlxO19. The anisotropy field was found to be approximately 25 kOe for SrFe11.5Al0.5O19. The (BH)(max) of 1.20 MGOe was obtained for x = 0.0, while there was a 63.66% enhancement of coercivity for SrFe11.5Al0.5O19 at 300 K. However, the highest (BH)(max) of 1.84 MGOe was achieved at 60 K for SrFe11.5Al0.5O19. The hardness parameter analysis confirmed that all the samples met the criterion for a permanent magnet, with (BH)max in the range of (1.00-1.20) MGOe at 300 K.
PHYSICA B-CONDENSED MATTER
(2023)
Article
Chemistry, Physical
Malak Yassine, Nour El Ghouch, A. M. Abdallah, Khulud Habanjar, R. Awad
Summary: In this work, magnetic nanocomposites Ba0.5Sr0.5Fe12O19/x(Ni0.5Zn0.5)Fe2O4 were prepared and characterized by adding nickel-zinc ferrite to barium strontium hexaferrite. The structure and morphology of the nanocomposites were analyzed using X-ray diffraction and transmission electron microscopy, and their elemental composition, oxidation states, and magnetic properties were investigated using X-ray photoelectron spectroscopy and vibrating sample magnetometer. The results showed significant changes in the morphology and magnetic properties of the nanocomposites upon the addition of Ni0.5Zn0.5Fe2O4.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Murli Kumar Manglam, Manoranjan Kar
Summary: In this study, magnetic composites with varying proportions of BaFe12O19 and CoFe2O4 were prepared and their magnetic properties were investigated. The results show that the nanoparticles are uniformly distributed in the composite, and the saturation magnetization and magnetic energy product of the material can be controlled by changing the proportion. The magnetic parameters also change with annealing temperature and measuring temperature.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2022)
Article
Materials Science, Ceramics
H. Jalili, B. Aslibeiki, A. Hajalilou, O. Musalu, L. P. Ferreira, M. M. Cruz
Summary: Recent studies have demonstrated the importance of the chemical composition and shape of magnetic nanoparticles in determining their properties. In this study, we synthesized cube-like nanoparticles and bimagnetic nanocomposites using an eco-friendly co-precipitation method. The nanocomposites exhibited good exchange-coupling interaction between the hard and soft magnetic phases, resulting in enhanced saturation magnetization. These materials showed promise for use in magnetic hyperthermia.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Patricija Hribar Bostjancic, Ziga Gregorin, Nerea Sebastian, Natan Osterman, Darja Lisjak, Alenka Mertelj
Summary: This study investigates the tuning of the isotropic-nematic phase transition of barium hexaferrite nanoplatelets (NPLs) in 1-butanol ferrofluids by affecting the interactions in the ferrofluids. The results reveal that the threshold concentration for liquid magnet formation can be altered by adjusting the mean diameter of the NPLs, the ionic strength of the ferrofluid, and the saturation magnetization of the NPLs.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Applied
Nuchjaree Salidkul, Wiyada Mongkolthanaruk, Kajornsak Faungnawakij, Supree Pinitsoontorn
Summary: A method to fabricate hard magnetic membranes based on bacterial cellulose (BC) matrix and magnetically hard phase barium ferrite (BFO) nanoparticles was proposed. The nanocomposites exhibited improved tensile strength and modulus at low BFO concentration, increased magnetization with BFO content, high flexibility upon bending, and sensitivity to external magnetic fields. Unlike other magnetic BC membranes, BC/BFO nanocomposites demonstrated hard magnetic properties, retaining their magnetic attraction after being magnetized by a permanent magnet, opening up possibilities for applications in various fields.
CARBOHYDRATE POLYMERS
(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
Chemistry, Physical
H. M. Fayzan Shakir, Mahnoor Shahzad, Huzaifa R. Aziz, M. Saad Rizwan, Sohaib Shahid, S. Hasan Ali, Tingkai Zhao
Summary: In this study, barium hexaferrite-polypyrrole (BHF-Ppy) nanoparticles were synthesized by in-situ polymerization method and showed excellent electromagnetic interference shielding properties in both near-infrared and microwave regions, as confirmed by microstructure characterization and performance testing.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Ceramics
M. A. Almessiere, Y. Slimani, N. A. Algarou, M. A. Gondal, Y. S. Wudil, M. Younas, I. A. Auwal, A. Baykal, A. Manikandan, T. Zubar, V. G. Kostishin, A. Trukhanov, I Ercan
Summary: The study prepared hard/soft nanocomposites using a sol-gel auto-combustion technique, showing complete exchange-coupled effects between phases and excellent electrodynamic parameters.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Chengliang Wang, Zongliang Zheng, Yuanhong Zou, Quanyuan Feng
Summary: Self-biased M-type barium hexaferrite/polydimethylsiloxane composite films with enhanced homogeneity, density, and magnetic properties have been successfully synthesized using a solvent-assisted composite process at low temperature. The addition of butanone solvent significantly improves the performance of the composite films, including the density and magnetic properties.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
M. Zareef Khan, Hur Abbas, K. Nadeem, Shahzad Ahmed, Awais Ghani
Summary: Bare BaFe12O19, CoFe2O4, and their nanocomposites with concentration percentage 30-70, 50-50 and 70-30 were synthesized by sol-gel approach. The agglomeration of nanocomposites was observed in TEM image with a mean particle size of 44 nm. Magnetic characterization showed that the magnetic properties of nanoparticles were influenced by the inter-particle interactions in the nanocomposites.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2023)
Article
Materials Science, Ceramics
Shalom Ann Mathews, D. Rajan Babu
Summary: (1-x)SrFe10Al2O19/(x)Co0.6Zn0.4Fe2O4-(SFAO/CZFO) hard/soft nanocomposite ferrite materials were synthesized by a "one-pot" self-propagating combustion route. The exchange coupling behavior between the hard and soft magnetic grains significantly influenced the microwave absorption capacity of the samples.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Hong-Baek Cho, Masanao Kanno, Minseob Lim, Tadachika Nakayama, Yong-Ho Choa
Summary: This study introduces a method to regulate the distribution of inorganic fillers in composite film using an electric field-oriented pin-point localization technique, achieving linear assembly and perpendicular alignment of nano particles. The utilization of micromold electrodes and DC electric field enables controlled filler structure modulation without surface modification.
APPLIED SURFACE SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Ahmad Nuruddin, Achmadun Habibullah, Maria Johana Adipratama, Bambang Sunendar Purwasasmita
Summary: The use of cellulose template can help in synthesizing high-purity barium hexaferrite, but adding too much can decrease magnetic properties. The addition of cellulose template leads to a reduction in crystallite size.
MATERIALS RESEARCH EXPRESS
(2021)
Article
Materials Science, Multidisciplinary
Hadi Papi, Hossein Ahmadvand, Mohammad Torabi Shahbaz, Saeideh Mokhtari, Mohammad Khondabi, Parviz Kameli
Summary: The study investigates the magnetic, dielectric, and magnetoelectric properties of particulate composites containing BF33BT-3BZT and CFO, showing that the composites exhibit relaxor behavior and have a high ME voltage coefficient. Compared to cobalt ferrite, composite of BF33BT-3BZT with nickel ferrite produces larger ME voltage at a lower magnetic field, confirming the crucial role of magnetic field dependence of magnetostriction on the ME properties.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2021)
Review
Instruments & Instrumentation
Farhad Larki, Yaser Abdi, Parviz Kameli, Hadi Salamati
Summary: Graphene, as a two-dimensional material, has great potential for optoelectronic applications. However, the small optical absorption and complex fabrication processes are challenges for the wide application of pure graphene photodetectors. Optimization of growth technique, property modification, transfer technique, and design are important for fabricating full graphene photodetectors.
Article
Materials Science, Multidisciplinary
R. Zarei Moghadam, M. H. Ehsani, H. Rezagholipour Dizaji, P. Kameli, M. Jannesari
Summary: By doping with oxygen, the oxygen content of DLC films increases, while sp(2) content decreases and sp(3) content increases. The C-C bonding loses its order, and the hydrophilicity of the films also improves with the increase in oxygen content.
MATERIALS RESEARCH EXPRESS
(2021)
Article
Chemistry, Physical
Ali Obeydavi, Ali Shafyei, Ahmad Rezaeian, Parviz Kameli, Jyh-Wei Lee
Summary: Novel Fe46Cr23Mo14Co7B5Si5 and Fe40Cr23Mo14Co7P6B5Si5 thin film metallic glasses were successfully deposited using direct current magnetron sputtering. Microstructural evaluations and mechanical properties tests demonstrated that the addition of P element improved the surface quality, mechanical properties, and corrosion resistance of the films. The type of substrate had minor influence on fracture toughness values, while the P addition significantly increased the polarization resistance.
Article
Materials Science, Multidisciplinary
Hossein Nikmanesh, Elnaz Jaberolansar, Parviz Kameli, Ali Ghotbi Varzaneh, Mohsen Mehrabi, Mohsen Shamsodini, Mohammad Rostami, Inaki Orue, Volodymyr Chernenko
Summary: A series of samarium-doped cobalt ferrite nanoparticles were successfully synthesized using sol-gel auto-combustion method. The saturation magnetization decreased with increasing samarium content, but showed an improvement at lower temperatures. Samarium-doped cobalt ferrite is a suitable candidate for moderate permanent magnets and high density information storage, especially at low temperatures.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Hossein Nikmanesh, Elnaz Jaberolansar, Parviz Kameli, Ali Ghotbi Varzaneh, Mohsen Mehrabi, Momammad Rostami
Summary: This study investigates the effect of Gd3+ substitution on the structural and magnetic properties of cobalt ferrite nanostructures. The results show that Gd3+ doping leads to a reduction in crystallite size and changes in the magnetic behavior of the nanostructures. The findings suggest that Gd-Co ferrite has potential applications in permanent magnet materials and high-density information storage.
Article
Materials Science, Multidisciplinary
M. Zarifi, P. Kameli, A. Ghotbi Varzaneh, H. Nikmanesh, H. Ahmadvand
Summary: The relationship between anisotropic magnetoresistance (AMR) and phase separation in LPCMO/NGO films was investigated in this study. It was found that by adjusting the annealing process and target substrate distance, the crystalline orientation of the films can be modified, leading to changes in the metal insulator transition (MIT) temperature and magnetoresistance (MR).
Article
Materials Science, Multidisciplinary
M. Khojaste Khoo, P. Kameli
Summary: Strontium hexaferrite thin films prepared by pulsed-laser deposition show improved crystallization and increased coercivity after annealing, with the highest coercivity of approximately 11 kOe measured on an Al2O3 substrate.
FRONTIERS IN MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Hossein Nikmanesh, Elnaz Jaberolansar, Parviz Kameli, Ali Ghotbi Varzaneh
Summary: This study reports on the cation distribution, magnetic, structural, and morphological studies of rare-earth Pr doped cobalt ferrite nanoparticles. The results demonstrate the successful formation of a mono-phase cubic spinel structure with good structural and morphological characteristics. The magnetic properties show a significant enhancement, especially at low temperatures.
Article
Chemistry, Physical
Mohsen Mehrabi, Mostafa Zahedifar, Soheila Hasanloo, Hossein Nikmanesh, Rouhollah Gheisari, Yongtao Li
Summary: In this study, lithium tetraborate nanoparticles co-doped with various percentages of Cu and Mg impurities were synthesized through the combustion process. The shape and structure of the products were confirmed by scanning electron microscopy images and X-ray diffraction patterns. Measurements and detections were conducted to determine the size, optical band gap, and thermoluminescence features of the nanoparticles.
RADIATION PHYSICS AND CHEMISTRY
(2022)
Article
Physics, Multidisciplinary
Motahareh Jafarpour, Mohammad Rostami, Seyed Mohammad Hossein Khalkhali, Hossein Nikmanesh, Mohammad Hossein Majles Ara
Summary: The sol-gel auto-combustion method was used to synthesize lanthanum-substituted nanocrystalline Mn-Ni spinel ferrites. It was found that the substitution of lanthanum ions decreases the crystallite size, reduces the dielectric constant, and increases the saturation magnetization and coercivity, making it promising for applications in electromagnets, electromagnetic noise suppression, and radio frequency equipment.
Article
Engineering, Electrical & Electronic
Mohammad Rostami, Samaneh Maghami, Vahid Vatanpour, Hossein Nikmanesh
Summary: The structural, morphological, magnetic, and electromagnetic interference (EMI) shielding properties of N-doped reduced graphene oxide (NRGO) decorated with La-doped Zn-Cu-Ni ferrite nanocomposite were investigated. The nanocomposites showed unique EMI shielding properties with a shielding effectiveness above 20 dB in the range of 2-18 GHz and a thickness of just 2 mm.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Materials Science, Multidisciplinary
Elaheh Mohammadbagheri, Elnaz Jaberolansar, Parviz Kameli, Hossein Nikmanesh
Summary: Hydrothermal synthesis was used to create CoCrxFe2_xO4 (x = 0, 0.2, 0.4, 0.6, 0.8 at %) nanoparticles with a single-phase spinel structure. Various structural parameters such as lattice constant, crystallite size, and bond lengths were calculated and found to align with the cation distribution determined in the magnetic study. FESEM images supported the findings from XRD analysis and showed a change in particle shape from spherical to octahedral with Cr doping. The size distribution plots revealed that the ferrite particle size ranged from 21-110 nm. The magnetic properties of the Co-Cr ferrite structures were determined by the size and shape of particles, as well as the cation distribution.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
