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
Chemistry, Physical
O. Kaman, D. Kubaniova, K. Knizek, L. Kubickova, M. Klementova, J. Kohout, Z. Jirak
Summary: The study focuses on hydrothermally prepared Mn-Zn ferrite nanoparticles, exploring the effects of cation distribution on magnetic properties. Various techniques including XRD, TEM, Fe-57 Mossbauer spectroscopy, and temperature-variable magnetic measurements were employed to analyze the characteristics of the nanoparticles.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
G. C. Lavorato, M. E. Saleta, S. J. A. Figueroa, D. Tobia, J. C. Mauricio, J. Lohr, E. Baggio-Saitovitch, H. E. Troiani, R. D. Zysler, E. Lima, E. L. Winkler
Summary: The cation occupancy of bimagnetic CoO/Co1-xZnxFe2O4 core/shell nanoparticles was studied using X-ray absorption and Mossbauer spectroscopies. The results show that Co and Zn cations mainly occupy octahedral and tetrahedral sites, respectively, while Fe cations are distributed in both sites. This study can guide the interpretation of magnetic properties in complex bimagnetic systems for future technological applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
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)
Article
Materials Science, Multidisciplinary
Baljeet Kaur, Kanika Upadhyay, Richa Bhardwaj, Keun Hwa Chae, Navdeep Goyal
Summary: This study provides insights into the impact of Cr3+ ion substitution on the structural and magnetic properties of nanocrystalline zinc doped cobalt ferrite nanoparticles. The formation of single phase Cr substituted Zn-Co nanoparticles with Fd3m space group and the preference of Cr3+ ion for the octahedral site are confirmed. The study also discusses the correlation between cation distribution and magnetic behavior of the system.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Chemistry, Physical
Alexei A. Belik, Andreas Doenni, Masahiko Tanaka, Iana S. Glazkova, Alexey V. Sobolev, Igor A. Presniakov
Summary: New ferrites with the BaRFeO4 composition (R = Ho, Er, Tm, and Yb) were synthesized using a solid-state method. Their crystal structures, physical properties, and magnetic behavior were studied. The results showed distinct magnetic transitions for different R values and evidence of spin-induced ferroelectric polarization, suggesting complex magnetic structures and exchange interactions.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
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
Multidisciplinary Sciences
M. Derakhshani, E. Taheri-Nassaj, M. Jazirehpour, S. M. Masoudpanah
Summary: Nickel-zinc ferrite powders were prepared through conventional solid-state route and sintered at 1100 and 1300 degrees C for electromagnetic wave absorption. The samples sintered at 1300 degrees C showed high magnetic saturation and low coercivity, leading to high reflection losses at certain frequencies in the 3D contour plot. The microwave absorption performance was attributed to dielectric and magnetic loss mechanisms, with magnetic part prevailing.
SCIENTIFIC REPORTS
(2021)
Article
Physics, Condensed Matter
J. Z. Msomi, T. A. Nhlapo, A. Stanciu, S. Greculeasa, V. Kuncser, T. Moyo
Summary: In this study, nanocrystalline NixCo1-xFe2O4 oxides with varying crystallite size were analyzed using Mossbauer spectroscopy, hysteresis loops, and magnetization measurements. A core-shell model was proposed, showing a ferrimagnetic core and a disordered shell. The magnetic properties were found to depend on the Ni2+ ion concentration and crystallite size.
PHYSICA B-CONDENSED MATTER
(2023)
Article
Engineering, Electrical & Electronic
N. Jahan, M. M. Uddin, M. N. I. Khan, F. -U. -Z. Chowdhury, M. R. Hasan, H. N. Das, M. M. Hossain
Summary: In this study, Yb-substituted Ni-Zn-Fe ferrites were synthesized using sol-gel auto combustion method, with various analyses confirming their structure and properties. The decrease in grain size, saturation magnetization, Bohr magnetic moment, and the increase in coercivity with increasing Yb3+ content were observed, along with a decrease in Curie temperature. The compositions displayed ferromagnetic order below Curie temperature and paramagnetic behavior above it, making them potential candidates for high-temperature magnetic device applications.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Subhajit Nandy, Mamta Latwal, Ganesh Pandey, Keun Hwa Chae
Summary: This article provides an extensive review of various techniques for determining the cation distribution in ferrites, such as x-ray magnetic circular dichroism, Mossbauer spectroscopy, and x-ray absorption spectroscopy. The importance of cation distribution in controlling the properties of ferrites is highlighted, and comparisons between different synthesis methods are presented.
JOURNAL OF ELECTRONIC MATERIALS
(2022)
Article
Materials Science, Ceramics
Prajna P. Mohapatra, Hodam Karnajit Singh, Mangalampalli S. R. N. Kiran, Pamu Dobbidi
Summary: In this study, Co-substituted Ni-Zn ferrites were synthesized, and their structural and magnetic properties were investigated. The results showed that Co substitution led to an increase in crystallite size and lattice constant, as well as a suppression of Raman peak intensity and shift towards a lower wavenumber. The dielectric properties and magnetic response of the samples were also affected by Co substitution. At low temperatures, the Co-substituted ferrites exhibited a giant coercivity and high effective magnetocrystalline anisotropy.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
KrishnaPillai Chandrikamma Dhanyaprabha, Bibin Jacob, Manoj Mohan, Imaddin A. Al-Omari, Salim H. Al-Harthi, Myo T. Z. Myint, Hysen Thomas
Summary: Ni-Mg ferrites were prepared using a polyol method and characterized using various techniques to investigate the effect of dopant substitution on microstructural magnetic and optical properties. The results showed an increasing trend in saturation magnetization with nickel substitution, and the proposed cation distribution was confirmed through FTIR and Mossbauer analysis.
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Atta Ur Rehman, M. Atif, Ubaid ur Rehman, H. Wahab, Francis Chi -Chung Ling, W. Khalid, A. Ul-Hamid, Z. Ali, M. Nadeem
Summary: Different compositions of doped Ni0.01-xZnxFe2.99O4 (x = 0.0, 0.005, 0.01) nanoparticles were synthesized and characterized. The results showed a significant enhancement in the dielectric and magnetic properties of Ni2+ doped Fe3O4 nanoparticles, attributed to the unusual cation redistribution in the Ni0.01Fe2.99O4 nanoparticles.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Chemistry, Physical
K. M. Srinivasamurthy, K. Manjunatha, A. El-Denglawey, S. P. Kubrin, D. A. Sarychev, M. Maslan, Vinayak Pattar, V. Jagadeesha Angadi
Summary: The structure and magnetic behavior of nanocrystalline Co0.5Ni0.5Fe2O4 ferrites under Co-60 gamma-irradiation were studied through XRD and FTIR spectroscopy. The magnetic properties were found to be influenced by the redistribution of cations induced by irradiation.
RADIATION PHYSICS AND CHEMISTRY
(2021)
Article
Chemistry, Physical
Laxmi Narayan Mahour, M. Manjunatha, Harish Kumar Choudhary, Rajeev Kumar, A. Anupama, R. Damle, K. P. Ramesh, Balaram Sahoo
JOURNAL OF ALLOYS AND COMPOUNDS
(2019)
Article
Physics, Applied
M. Manjunatha, G. Srinivas Reddy, K. J. Mallikarjunaiah, Ramakrishna Damle, K. P. Ramesh
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
(2019)
Article
Materials Science, Ceramics
M. Manjunatha, G. Srinivas Reddy, Ramakrishna Damle, K. J. Mallikarjunaiah, K. P. Ramesh
CERAMICS INTERNATIONAL
(2019)
Article
Materials Science, Multidisciplinary
Mushtagatte Manjunatha, Rajeev Kumar, Aroli V. Anupama, Vijay B. Khopkar, Ramakrishna Damle, Karalapura P. Ramesh, Balaram Sahoo
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2019)
Article
Materials Science, Ceramics
Rajeev Kumar, M. Manjunatha, A. V. Anupama, K. P. Ramesh, Balaram Sahoo
CERAMICS INTERNATIONAL
(2019)
Article
Materials Science, Ceramics
Jaimson T. James, Jephin K. Jose, M. Manjunatha, Keenatampalle Suresh, A. Madhu
CERAMICS INTERNATIONAL
(2020)
Article
Chemistry, Physical
M. Manjunatha, G. Srinivas Reddy, K. J. Mallikarjunaiah, K. P. Ramesh
JOURNAL OF MOLECULAR STRUCTURE
(2020)
Article
Materials Science, Multidisciplinary
G. Srinivas Reddy, Harish Sharma, Pradeep Bhaskar, M. Manjunatha
MATERIALS CHEMISTRY AND PHYSICS
(2020)
Article
Chemistry, Multidisciplinary
G. Srinivasa Reddy, M. Manjunatha, K. P. Ramesh
Summary: Ternary cobalt alloy was synthesized using a chemical reduction process with hydrazine, showing pure fcc phase with spherical particles. Magnetic properties slightly lower than pure cobalt metal were observed through VSM and Co-59 IFNMR techniques, with broad distribution of hyperfine field indicated by 59Co IFNMR.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2021)
Article
Materials Science, Ceramics
M. Manjunatha, G. Srinivas Reddy, K. J. Mallikarjunaiah, K. P. Ramesh, S. V. Bhat
Summary: The structural and magnetic characteristics of Al substituted nickel ferrites NiFe2-xAlxO4 (x = 0.0-0.3) produced through auto combustion are presented. It is found that the saturation magnetization (MS) decreases as the concentration of Al3+ increases. Raman investigations show intensified peaks, while 57Fe Nuclear Magnetic Resonance investigations reveal a shift to lower frequency levels.
CERAMICS INTERNATIONAL
(2022)
Proceedings Paper
Physics, Condensed Matter
M. Manjunatha, G. Srinivas Reddy, K. J. Mallikarjuniah, K. P. Ramesh
DAE SOLID STATE PHYSICS SYMPOSIUM 2019
(2020)
Proceedings Paper
Physics, Applied
M. Manjunatha, Ramakrishna Damle, K. P. Ramesh
DAE SOLID STATE PHYSICS SYMPOSIUM 2018
(2019)
Proceedings Paper
Physics, Condensed Matter
M. Manjunatha, Rajeev Kumar, B. M. Siddesh, Balaram Sahoo, R. Damle, K. P. Ramesh
62ND DAE SOLID STATE PHYSICS SYMPOSIUM
(2018)
Article
Physics, Multidisciplinary
B. M. Siddesh, M. Manjunatha, Ramalcrishna Damle, K. P. Ramesh
INDIAN JOURNAL OF PURE & APPLIED PHYSICS
(2018)