Article
Materials Science, Ceramics
Muhammad Junaid, Ijaz Ahmad Qazafi, Muhammad Azhar Khan, Shagufta Gulbadan, Syed Zafar Ilyas, H. H. Somaily, Mohamed S. Attia, Mohammed A. Amin, H. M. Noor ul Huda Khan Asghar
Summary: The impact of Ni2+ and Zr4+ on the physical properties of LiFe2O4 ferrites synthesized via the microemulsion technique was investigated. The substitution of Ni2+ and Zr4+ ions led to changes in lattice constant, crystallite size, X-ray density, dielectric parameters, and magnetic properties of lithium ferrites.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Xiang Yu, Lichen Wang, Ruoshui Liu, Ningfang Zhou, Zhiyi Xu, Huayang Gong, Tongyun Zhao, Jirong Sun, Fengxia Hu, Baogen Shen
Summary: We synthesized Sr1-xNdxFe12-yCoyO19 (x = 0-0.25, y = 0-0.1) using a conventional ceramic route and analyzed the crystal structures using X-ray diffraction. With increasing Nd3+ and Co2+ contents, lattice constant a increases, while lattice constant c decreases. The magnetic properties are improved when x = y = 0.1 (equal co-substitution), and further improved when x is increased (unequal co-substitution), reaching optimum values of Ms = 76.4 emu/g and Hc = 5115 Oe due to the occupation of the 2a site by divalent Fe2+. The occupancies of Co2+ and Fe2+ are further verified using Raman spectroscopy.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Pawe E. Tomaszewski
Summary: The comments point out a significant error in the crystallographic part of the commented papers, stating that the studied nanocrystals are actually of the sillenite type, not BiFeO3 as stated in the original papers.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Multidisciplinary
Mallesh Shanigaram, Ugendar Kodam, Ji-Sub Noh, Young-Woo Nam
Summary: This study reports the structural, vibrational, surface composition, and magnetic properties of MFe2O4 (M = Ni, Co) samples before and after annealing. The results indicate the presence of a spinel structure and an inverse spinel structure in the samples. The saturation magnetization increases systematically with annealing temperature up to 1000 degrees C and then slightly decreases. Moreover, the coercivity values vary within certain ranges for different samples.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2022)
Article
Materials Science, Multidisciplinary
Kumud Dubey, Shubha Dubey, Vineet Sahu, Rayees Ahmed Parry, Anchit Modi, N. K. Gaur
Summary: In this study, CoFe2O4 nanoparticles with spherical and flake-like grain structures were successfully synthesized by ultrasonication-assisted sol-gel technique at a lower temperature. The synthesized compound showed a cubic structure, semiconductor nature, and improved magnetic properties.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Polymer Science
R. Dilip, R. Jayaprakash
Summary: In this study, M-doped BaFe2O4 (M-Co, Ni, and Mn) nanoparticles were synthesized via auto combustion method, with the weight percentage of metals optimized. XRD and FTIR confirmed the structural and vibrational characteristics of the materials, while FESEM and TEM images visualized morphological changes induced by the surfactant n-heptane. The magnetic properties were analyzed using VSM, revealing ferromagnetic behavior, and dielectric constant variations were examined through dielectric studies.
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Jiang Zou, Lifeng Wang, Juan He, Bo Wu, Quan Xie
Summary: This study prepared magnetic materials with different dopants using ball milling and sintering processes, and investigated their crystal structures, electrical conductivity, and magnetic properties using various testing methods. The results showed that the dopants enhanced the electrical conductivity and magnetic properties of the materials. Additionally, an improvement in permeability was observed for specific doped alloys.
Article
Chemistry, Physical
Jannis Thien, Jari Rodewald, Tobias Pohlmann, Kevin Ruwisch, Florian Bertram, Karsten Kuepper, Joachim Wollschlaeger
Summary: This study prepared high-quality CoxFe3-xO4 films with different Co contents using reactive molecular beam epitaxy. The epitaxy, film interfaces, and roughness were extensively investigated using time-resolved X-ray diffraction, low-energy electron diffraction, and X-ray reflectivity measurements. The composition and electronic structure of the films were characterized by hard X-ray photoelectron spectroscopy. The results provide valuable insights into the growth and properties of CoxFe3-xO4 films.
Article
Engineering, Electrical & Electronic
Reena Dhyani, R. C. Srivastava, Gagan Dixit
Summary: This study focuses on the investigation of magnetic and temperature-dependent dielectric properties of Co-CuFe2O4 nanoferrites. Cu0.5Co0.5Fe2O4 nanoparticles exhibit the highest magnetic properties and lower dielectric loss, making them potential candidates for high density magnetic recording media and power transformers at high frequencies.
JOURNAL OF ELECTRONIC MATERIALS
(2022)
Article
Engineering, Chemical
Yanling Qi, Chenchen He, Run Zhang, Wei Wang
Summary: The effects of boric acid and ammonium sulfate on the electrochemical reduction process of Fe(II) Ni(II) were studied. It was found that the reduction current of Fe(II) is higher than that of Ni(II). Adding H3BO3 to the solution helps obtain brighter and compact coating, while adding (NH4)(2)SO4 helps achieve higher reduction current density. The results also show that the current density has a significant and nonlinear effect on the Fe content in FeNi thin films. SEM and XRD results demonstrate that the surface morphology and structure of FeNi films are controlled by the content of Ni and Fe. Magnetic properties tests reveal that the saturation magnetization is proportional to the Fe content, while the coercivity is independent of the Fe content.
Article
Materials Science, Multidisciplinary
N. V. Mushnikov, A. G. Popov, V. S. Gaviko, A. V. Protasov, N. M. Kleinerman, O. A. Golovnya, S. P. Naumov
Summary: The phase boundaries of martensitic transformation in Fe-Ni alloys with different compositions have been determined using various methods, revealing the magnetic and structural transformations at different nickel concentrations. The study shows the relationship between structural and magnetic transitions in Fe-Ni alloys with different compositions.
Letter
Chemistry, Physical
Alexei A. Belik
Summary: The aim of these comments is to draw attention to significant errors reported in the commented paper, in which the authors claimed the preparation of solid solutions Bi1-xHoxFeO3. However, the X-ray diffraction data revealed the absence of single-phase solid solutions.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Physics, Condensed Matter
Shakti Bajaj, Deepali D. Andhare, Swapnil A. Jadhav, Sangita Shinde
Summary: The present study focuses on the low temperature synthesis of In3+ doped cobalt ferrite using sol-gel auto-combustion method. X-ray diffraction analysis confirms the formation of single-phase cubic spinel structure. FE-SEM images show the well formation of spherical grains with an average size of 36 nm. The saturation magnetization decreases with In3+ doping due to the decreasing A-B interaction, and the dielectric constant also decreases.
SOLID STATE COMMUNICATIONS
(2023)
Article
Chemistry, Inorganic & Nuclear
A. L. Zinnatullin, I. Yu Nosov, M. A. Cherosov, A. G. Kiiamov, F. G. Vagizov
Summary: This study reports the effect of doping with europium ions on the magnetic properties of bismuth ferrite. Through various methods, the researchers gained a deeper understanding of the mechanisms behind the changes in magnetic response caused by doping. It was found that within a certain doping range, the crystal structure parameters remained stable, but beyond that range, the crystal structure changed. Additionally, the magnetic properties were found to be correlated with the crystal structure.
JOURNAL OF SOLID STATE CHEMISTRY
(2022)
Article
Engineering, Electrical & Electronic
A. Hssaini, M. Belaiche, M. Elansary
Summary: Coated Ni0.5Co0.5Fe(2-x-y)GdxEryO4 (x = 0.3, y = 0.1) nanoparticles were synthesized for the first time using the co-precipitation method. The nanoparticles were characterized using XRD, FTIR, TEM, TGA, and MPMS, revealing magnetic properties and the formation of bonds between the nanoparticles and oleic acid.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Materials Science, Multidisciplinary
M. Zarifi, P. Kameli, T. Raoufi, A. Ghotbi Varzaneh, D. Salazar, M. I. Nouraddini, L. Kotsedi, M. Maaza
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2020)
Article
Materials Science, Ceramics
Ali Obeydavi, Ali Shafyei, Ahmad Rezaeian, Parviz Kameli, Jyh-Wei Lee
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2020)
Article
Materials Science, Ceramics
B. Aslibeiki, P. Kameli
CERAMICS INTERNATIONAL
(2020)
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
Multidisciplinary Sciences
R. Zarei Moghadam, H. Ahmadvand
Summary: A ZnS single-layer antireflection coating on Ge substrate suitable for the infrared range was designed, fabricated, and tested for hardness improvement. The sample passed environmental and durability tests after the deposition of Ge0.1C0.9 film.
IRANIAN JOURNAL OF SCIENCE AND TECHNOLOGY TRANSACTION A-SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
M. Zarifi, P. Kameli, A. Ghotbi Varzaneh, E. Hosseini, M. Norouzi-Inallu, M. Abbasi Eskandari, H. Ahmadvand
Summary: The effects of anisotropic strain on La0.3Pr0.4Ca0.3 MnO3 films were investigated. The anisotropic resistance was observed due to different strengths of anisotropic strain controlled by film thicknesses. The anisotropic resistivity originated from different percolation paths in the films and revealed electronic phase separation induced by anisotropic strain. Additionally, the resistivity of the films was found to be significantly reduced by applying electric currents.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
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
Physics, Applied
I. Abdolhosseini Sarsari, M. Khajeh Sahooti, P. Kameli, H. Ahmadvand
Summary: By studying the composite of perovskite manganite with semiconductor WO3, it was found that a secondary phase BaWO4 is formed, altering the structure and increasing the volume of the composite unit cell. This weakened the double exchange effect between manganite grains and increased electrical resistance due to weakened electron tunneling among the grains.
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
(2022)
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
Materials Science, Multidisciplinary
A. Ghotbi Varzaneh, P. Kameli, I. Abdolhosseini Sarsari, M. Ghorbani Zavareh, C. Salazar Mejia, T. Amiri, Y. Skourski, J. L. Luo, T. H. Etsell, V. A. Chernenko