Article
Polymer Science
Chandra Sekhar Beera, B. Dhanalakshmi, D. Nirmala Devi, D. Vijayalakshmi, Akanksha Mishra, S. Ramesh, B. Parvatheeswara Rao, P. Shyamala, Melita Menelaou, Nadyah Alanazi, Abdullah N. Alodhayb
Summary: Chromium-doped cobalt ferrite nanoparticles were synthesized and their magnetic properties were studied, showing that the introduction of chromium led to changes in the material's magnetic properties.
Article
Chemistry, Multidisciplinary
Parvin Imanipour, Saeed Hasani, Amir Seifoddini, Marcin Nabialek
Summary: In this study, cobalt ferrite magnetic nanoparticles doped with zinc and vanadium were synthesized using the sol-gel auto-combustion method. The samples were characterized using various techniques, and the results showed that doping affected the crystal structure, grain size, and morphology of the synthesized particles, as well as the saturation magnetization and coercivity. These findings are of great importance for understanding the physical properties and applications of cobalt ferrite.
Article
Biochemistry & Molecular Biology
Patricia Gomes, Barbara Costa, Joao P. F. Carvalho, Paula I. P. Soares, Tania Vieira, Celia Henriques, Manuel Almeida Valente, Silvia Soreto Teixeira
Summary: Cancer is a leading cause of death worldwide and traditional treatments have limitations and severe side effects. Magnetic hyperthermia is an alternative method that can be used alone or in conjunction with chemotherapy or radiotherapy. The use of cobalt ferrite particles synthesized through an innovative biogenic sol-gel method was evaluated for its suitability in magnetic hyperthermia applications through thermal, structural, magnetic, and cytotoxic analyses.
Article
Chemistry, Physical
M. Ismail, N. A. Ali, N. A. Sazelee, S. U. Muhamad, S. Suwarno, N. H. Idris
Summary: The effect of cobalt ferrite nanopowder on the dehydrogenation properties of sodium alanate was studied for the first time. The addition of cobalt ferrite significantly reduced the decomposition temperature of sodium alanate and enhanced the hydrogen release rate. This was attributed to the synergistic catalytic effect of new active species formed during the dehydrogenation process.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Multidisciplinary Sciences
Riyatun Riyatun, Triana Kusumaningsih, Agus Supriyanto, Budi Purnama
Summary: This paper investigates the structural and magnetic properties of silver-doped cobalt ferrite nanoparticles and their ability to act as antibacterial agents. The study finds that low levels of silver doping enhance the antibacterial properties and affect the magnetic properties of the material.
KUWAIT JOURNAL OF SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Antaz Ali, M. S. I. Sarker, Minhajul Islam, M. K. R. Khan, F. A. Khan, M. N. I. Khan, M. M. Rahman
Summary: In this study, the effect of In on superparamagnetic CoInxFe2-xO4 nanoparticles prepared through one step hydrothermal method was reported. The presence of In ions in the matrix was found to change the structural and magnetic properties of CoFe2O4, confirmed by XRD and magnetic analyses. The decrease in crystallite size and the range of particle size depending on In content were observed.
RESULTS IN PHYSICS
(2021)
Article
Materials Science, Ceramics
Seyedeh Mansoureh Hashemi, Zahra Ataollahi, Saeed Hasani, Amir Seifoddini
Summary: The cobalt ferrite magnetic nanoparticles were synthesized using the sol-gel auto-combustion method with different amounts of egg white protein. The addition of albumin reduced the average crystallite size and increased the coercivity and saturation magnetization of the nanoparticles. The presence of albumin caused cation redistribution, affecting magnetic anisotropy and inversion degree.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
T. C. Bessy, Chadlia Manna, J. Johnson, Rabab A. Hegazy, M. R. Bindhu, S. Sasi Florence
Summary: Combustion technique is used to produce copper-doped magnesium ferrite nanoparticles, which act as photocatalysts to remove dye contaminants from wastewater. XRD analysis and UV-vis spectroscopy reveal the formation of single-phase face-centered cubic spinel structure and an energy bandgap of 4.5-5.5 eV. SEM images and EDX analysis confirm the composition and morphology of the prepared ferrites. PL spectra demonstrate that the luminescence strength decreases with increasing Cu doping concentration. The effectiveness of CuxMg0.8-xFe2O4 catalyst on dye degradation in UV light is significantly higher than that of commercial photocatalysts.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Inorganic & Nuclear
H. M. Shashanka, P. N. Anantharamaiah
Summary: This study investigates the magnetostrictive characteristics of sintered CoFe2O4 (CFO), Co0.85Ni0.15Fe1.85Ga0.15O4 (CNFGO15), and Co0.85Mg0.15Fe1.85Ga0.15O4 (CMFGO15) ceramics. The CMFGO15 sample exhibits enhanced strain sensitivity at low magnetic fields compared to the other two samples, with a maximum strain sensitivity nearly 160% higher than the values found for the other two samples even at remarkable low field.
SOLID STATE SCIENCES
(2023)
Article
Materials Science, Multidisciplinary
Saroj P. Sahare, Atul V. Wankhade, Sangesh P. Zodape
Summary: Cobalt-nickel ferrite nanoparticles were synthesized by a hydrothermal method assisted by malonic acid. Structural and morphological studies showed single-phase spinel ferrites with monodispersed nanoparticles. The synthesized cobalt-nickel ferrite samples exhibited promising properties for high-density recording media.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Crystallography
Hector A. Chinchay-Espino, Gina M. Montes-Albino, Carlex M. Morales-Cruz, Segundo E. Dobbertin-Sanchez, Segundo Rojas-Flores
Summary: The effect of Co substitution on the structural and magnetic properties of BiFeO3 was studied, and Co-BiFeO3 nanopowders were successfully synthesized via the sol-gel method, exhibiting ferromagnetic properties at 15% Co doping.
Article
Materials Science, Multidisciplinary
Riyatun, Triana Kusumaningsih, Agus Supriyanto, Budi Purnama
Summary: Silver-substituted cobalt ferrite (Ag0.02Co0.98Fe2O4) nanoparticles were sensitized through coprecipitation method. Increasing annealing temperature resulted in larger crystallite size and grain size. The redistribution of cations led to a perfect spinel structure. Higher annealing temperature led to increased saturation magnetization and coercive field. The antibacterial properties of Ag0.02Co0.98Fe2O4 were demonstrated through evaluation on S. aureus and E. coli, with the most significant effects observed at annealing temperature of 200 degrees C.
MATERIALS RESEARCH EXPRESS
(2023)
Article
Materials Science, Multidisciplinary
Morteza Adibi, S. Mohammad Mirkazemi, S. Alamolhoda
Summary: Cobalt ferrite nanoparticles were successfully synthesized using citric acid-assisted hydrothermal method, resulting in single-phase and uniform nanoparticles. The change in citric acid to metal ion molar ratio significantly influenced the crystallite size and magnetization of the synthesized particles, demonstrating the importance of citrate acid concentration in controlling the properties of nanoparticles. Additionally, the study presented a mechanism for synthesis producer and the role of chelating agent concentration in the formation of complexes during the synthesis process.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Chemistry, Physical
Asma Mohammadi Badizi, Hamed Maleki
Summary: In this study, (ZrO2)(1-x)-(CoFe2O4)(x) (0 ≤ x ≤ 1) nanoceramics were synthesized using the modified sol-gel method, and their structural, morphological, magnetic, optical, and thermal properties were investigated. The results confirmed the formation of zirconium oxide, cobalt ferrite, and nanocomposites, and showed the enhancement of magnetic properties and a significant reduction in optical band-gap. The system has promising application for magnetic photo-catalysts and in biomedical applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Pawel Peczkowski, Elzbieta Szostak, Ewa Pochec, Jan Marek Michalik, Jaroslaw Pietosa, Tarek Tahraoui, Maciej Luszczek, Lukasz Gondek
Summary: This paper investigates the mechanisms of tuning the magnetic, electronic, and cytotoxic properties of the CoFe2_xLaxO4 system (x≤0.1) by introducing a small amount of lanthanum ions (La3+). It was found that the main mechanism is the complex exchange interaction between the 3d states of cations and the 2p states of oxygen caused by mixing of the metals over the tetragonal and octahedral positions. The synthesized CoFe2_xLaxO4 nanoparticles (NPs) show high impact on cancer cells while having significantly lower toxicity towards normal cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
P. N. Anantharamaiah, Sanjukta Mondal, Sujoy Saha
Summary: This study demonstrates induced catalytic activity in hard magnetic strontium hexaferrite system by replacing Fe with Cu, with SrCu(0.3)Fe(11.7)O(19) showing superior catalytic performance in transforming 4-nitrophenol to 4-aminophenol within 8 minutes. Reusability test confirmed 100% activity retention even after five consecutive cycles for the SrCu(0.3)Fe(11.7)O(19) catalyst.
Article
Materials Science, Ceramics
William Remlalfaka, Chinnasamy Murugesan, P. N. Anantharamaiah, N. Manikanda Prabu
Summary: Bismuth vanadate and nickel ferrite nanoceramics were synthesized and three composites were prepared, with the 50 wt% BiVO4 + 50 wt% NiFe2O4 composite showing the highest photocatalytic activity. These magnetic composites can achieve 80% dye degradation efficiency under sunlight and can be easily separated using a laboratory magnet.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
P. N. Anantharamaiah, H. M. Shashanka, R. Kumar, J. A. Chelvane, B. Sahoo
Summary: Phase pure cobalt-ferrite and Zn-substituted cobalt-ferrite nanopowders were synthesized by a combustion route, showing excellent magnetostriction behavior for potential applications in highly sensitive strain sensors.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2021)
Article
Chemistry, Physical
P. N. Anantharamaiah, H. M. Shashanka, S. Saha, J. A. Chelvane, B. Sahoo
Summary: Bismuth-substituted cobalt ferrite samples with enhanced magnetostriction were successfully synthesized using a glycine-nitrate based auto-combustion route. The presence of Bi3+ promoted significant grain growth and increased strain sensitivity at lower magnetic fields.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
K. Chandrika Chandrika, P. N. Anantharamaiah, R. Hari Krishna, A. G. Jineesh, T. Niranjana Prabhu
Summary: This study successfully synthesized CoFe2O4-TiO2 (p-n) catalyst by the modified sol-gel route and optimized the experimental parameters for photocatalysis. The research found that pH is the critical influencing factor on photocatalysis, followed by catalyst dosage, mixing speed, and irradiation time.
MATERIALS TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Pendaranahalli Nadikeraiah Anantharamaiah, Hadonahalli Munegowda Shashanka, Sujoy Saha, Keerthi Haritha, C. Ramana
Summary: By substituting a non-magnetic cation for a magnetic cation, otherwise catalytically inactive magnetic materials can be transformed into catalytically active materials. The catalytic performance of Al-doped SrFe12O19 nanomaterials in the reduction reaction of 4-nitrophenol demonstrates good activity due to the presence of Al ions in the hexaferrite lattice structure.
Article
Chemistry, Physical
Pendaranahalli Nadikeraiah Anantharamaiah, Prerna Rao, Hadonahalli Munegowda Shashanka, Vijay Khopkar, Jeyaramane Arout Chelvane, Balaram Sahoo, C. Ramana
Summary: The tunable dielectric properties of cation-substituted nickel ferrite have been achieved through selective engineering of crystallographic site occupation. The occupation of different sites by Mg2+ and In3+, as confirmed by spectroscopy, leads to variations in dielectric constant and activation energy.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Multidisciplinary
Pendaranahalli Nadikeraiah Anantharamaiah, Hadonahalli Munegowda Shashanka, Srikari Srinivasan, Debabrata Das, Ahmed A. El-Gendy, C. V. Ramana
Summary: This study reports on the fabrication, characterization, and evaluation of cobalt ferrite nanocrystalline thin films on a flexible mica substrate. The CFO films exhibited single-phase and nanocrystalline nature, spherical shape morphology, and suitable magnetic and magnetostrictive properties for flexible sensor devices.
Article
Nanoscience & Nanotechnology
Mudalagiriyappa Satish, Hadonahalli Munegowda Shashanka, Sujoy Saha, Keerthi Haritha, Debabrata Das, Pendaranahalli Nadikeraiah Anantharamaiah, C. Ramana
Summary: This study investigates the effect of substituting Ni2+ with Co2+ on the crystal structure, phase, microstructure, magnetic properties, and magnetostrictive properties of NiFe2O4 (NFO). The Co-substituted NFO (Ni1-xCoxFe2O4, NCFO, 0<x<1) nanomaterials were synthesized and analyzed using various techniques. The results show that Co-substitution significantly influences the lattice constant, chemical bonding, and magnetic properties of NCFO, with potential applications in torque sensors.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
H. M. Shashanka, Sujoy Saha, Keerthi Haritha, P. N. Anantharamaiah, C. V. Ramana
Summary: We report on the influence of Al and Zn co-substitution on the structural, magnetic, and magnetostrictive properties of CZFAO materials. The incorporation of smaller Al3+ ions in spinel ferrite leads to a reduction in crystallite size and lattice parameter. Al-Zn substitution induces grain growth, resulting in a dense, interconnected grain morphology. The magnetic properties of CZFAO, such as saturation magnetization and coercivity, decrease with increasing x due to the non-magnetic character of the substituents.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Materials Science, Ceramics
M. Satish, H. M. Shashanka, S. Saha, P. N. Anantharamaiah, C. V. Ramana
Summary: This study reports on the enhanced magnetostrictive characteristics of composites derived from hard cobalt ferrite (CFO) and soft nickel ferrite (NFO) materials. The composites were synthesized using a cost-effective and eco-friendly method, and their phase purity, surface morphology, magnetic properties, and magnetostrictive characteristics were evaluated. The composites exhibited better magnetostriction at lower magnetic fields compared to the parent sintered CFO and NFO samples, and their structure-phase-property correlation could provide a roadmap for their potential applications in electromagnetic devices.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Multidisciplinary
S. Kalpana, Vinay S. Bhat, G. Hegde, T. Niranjana Prabhu, P. N. Anantharamaiah
Summary: Two synthesis methods, autocombustion and sol-gel, were used to produce nearly spherical and polygonal shaped nanomaterials of spinel cobalt oxide as electrode materials. Analysis revealed different particle morphologies and crystallite sizes for the two samples, as well as variations in surface area and specific capacitance. Autocombustion method exhibited superior energy storage capability and higher surface area compared to sol-gel method.
Letter
Materials Science, Multidisciplinary
Kriti Gupta, Pranay Ninawe, Anil Jain, Arun Dadwal, M. Anas, V. K. Malik, S. M. Yusuf, Pattayil A. Joy, Nirmalya Ballav
Summary: Doping of quantum spin liquid insulators like barlowite with electron or hole leads to phase transitions to metallic and superconducting states. The resulting barlowite-rGO system exhibits semiconductor properties modulated by electron doping, making charge-doping experiments on barlowite and its analogs propitious.
Article
Chemistry, Multidisciplinary
Balendra, Bharti Singh, Azeem Banday, Shailabh Tewari, Vineet Kumar, Sevi Murugavel, P. A. Joy, Arunachalam Ramanan
Summary: A systematic investigation of the system manganese(II) salt-H(2)SBA-auxiliary ligand-solvent led to the isolation of six new multidimensional coordination polymers, all of which exhibited antiferromagnetic behavior at lower temperatures.
Article
Chemistry, Physical
P. N. Anantharamaiah, B. Prerna Rao, H. M. Shashanka, J. A. Chelvane, V. Khopkar, B. Sahoo
Summary: The study investigates the effect of Mg2+ and In3+ substitution on the structural, magnetic, magnetostrictive, and dielectric properties of NiFe2O4 samples. It was found that In3+ substituted sample showed better grain growth after sintering, as confirmed through microscopy and dielectric results.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
