Article
Engineering, Electrical & Electronic
G. Vinod, K. Rajashekhar, D. Ravinder, J. Laxman Naik
Summary: In this study, Cu-Cd-erbium nano-ferrites were synthesized using Citrate-Gel Auto-Combustion method, and their structural, electrical, and magnetic properties were investigated. XRD and SEM confirmed the pure cubic spinel phase composition of nanoparticles. The nanoparticles showed semiconductor behavior with decreasing crystallite size as erbium concentration increased.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Physical
Sanjeet Kumar Paswan, Pawan Kumar, Suman Kumari, Subhadeep Datta, Manoranjan Kar, J. P. Borah, Lawrence Kumar
Summary: This study investigates the structural, optical, temperature-dependent magnetic, and electrical properties of nanocrystalline NiFe1.97RE0.03O4 (RE = La3+ and Sm3+) compound. The results show that rare earth ion substitution leads to a decrease in lattice constant and particle size. The optical and magnetic properties of rare earth substituted samples are different from pure nickel ferrite, while their electrical properties exhibit similar behavior.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Materials Science, Ceramics
C. Murugesan, K. Ugendar, L. Okrasa, Jun Shen, G. Chandrasekaran
Summary: In this study, nanocrystalline Mn-Zn ferrites were synthesized through a solvent-free combustion reaction method and characterized using various techniques. The results showed that Zn substitution affects the crystallite size and electrical properties of the samples, but does not significantly alter the ionic states. The Zn-substituted manganese ferrite nanoparticles hold promise for high-frequency electronic device applications.
CERAMICS INTERNATIONAL
(2021)
Article
Engineering, Electrical & Electronic
Salma Aman, F. F. Alharbi, Soumaya Gouadria, Hafiz Muhammad Tahir Farid
Summary: The BaLax-Fe2-xO4 series nanomaterials synthesized via sol-gel technique exhibited changes in crystal size, lattice constant, grain size, and bulk density due to lanthanum ion substitution. The dc-resistivity and activation energy increased with increasing lanthanum content, while the temperature-dependent resistivity and activation energy decreased with increasing temperature. The magnetic characterization showed that all samples had soft magnetic nature, with high magnetic coercivity being crucial for high-frequency applications.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Physical
I. El Heda, J. Massoudi, R. Dhahri, E. Dhahri, F. Bahri, K. Khirouni, B. F. O. Costa
Summary: The structure, elastic properties, and optical properties of two ferrite ceramic materials were investigated. It was found that these compounds exhibit good conductivity and ductile nature, making them suitable for the fabrication of electrical and microwave devices.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
P. Annie Vinosha, A. Manikandan, R. Ragu, A. Dinesh, K. Thanrasu, Y. Slimani, A. Baykal, Belina Xavier
Summary: The physical properties of nickel substituted cobalt ferrite nanocrystals were investigated in this study, including structural, electrical, magneto-optical, and thermal properties. Various techniques such as XRD, FT-IR, VSM, UV-visible spectra, LCR meter, and photoacoustic spectrophotometer were used for characterization. Increasing nickel substitution led to a decrease in crystallite size and an increase in surface analysis of the synthesized products, making them suitable for high-frequency electromagnetic devices.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
C. Murugesan, L. Okrasa, K. Ugendar, G. Chandrasekaran, Xiaodi Liu, Dongfeng Diao, Jun Shen
Summary: The study investigates the structural, magnetic, and electrical properties of Mg1-xZnxFe2O4 nanoferrites synthesized using a solvent-free combustion route. The results show that the prepared samples have single-phase nature, and the size of the crystallites and the position of the vibrational modes vary with Zn. The magnetization is enhanced up to a certain point and then decreases, while the conductivity decreases gradually after a certain value.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2022)
Article
Materials Science, Ceramics
S. S. Aplesnin, L. Udod, M. N. Sitnikov, O. B. Romanova
Summary: This study investigated the electrical characteristics of Bi2Sn2-xFexO7 (x = 0.1, 0.2) stannates, including electrical resistance, impedance, I-V characteristics, capacitance, and more, and established correlations between certain characteristics and phase structure transitions.
CERAMICS INTERNATIONAL
(2021)
Article
Engineering, Electrical & Electronic
Yalagala Sandeep, T. Rambabu, Laxminarayana Kunja, Oimang Borang, G. Aravind, Aparna Dode, V Nathanial
Summary: Nano-crystalline particles of erbium-substituted Ni-Zn ferrites were successfully synthesized by sol-gel autocombustion method. The size and lattice parameters of the particles decreased with increasing Erbium ion concentration. The electrical and magnetic properties exhibited variations with frequency and Er3+ concentration.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(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
Chemistry, Physical
Abhijeet V. V. Dhotre, Tulshidas C. C. Darvade, Chaitali V. V. Khedkar, Keerthi Haritha, Shivaji S. S. Veer, Yesh D. D. Kolekar, C. V. Ramana
Summary: A comparative study was conducted on intrinsic, rare-earth (RE), and rare-earth and transition-metal (TM) cosubstituted cobalt ferrite (CFO) materials, exploring their crystal growth, phase-stability, morphology, magnetic, and electrical properties. Pristine CFO, RE-substituted CFO, and TM-RE cosubstituted CFO samples were synthesized and characterized. The results revealed the influence of dopants on phase formation, microstructure, surface area, and magnetic properties. The Co0.9Ni0.1Fe1.95Dy0.05O4 sample showed promising magnetostriction coefficient and strain derivative, making it suitable for stress or magnetic field sensing applications, as well as a potential candidate for magneto-electric materials. The dielectric behavior and conduction mechanism of the ferrites were also investigated.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Review
Materials Science, Multidisciplinary
Syed Ismail Ahmad
Summary: Instruments and devices based on magnetic materials are essential in modern culture, with ferrites being the leading materials. Cobalt ferrite (CFO) has versatile applications, attracting attention for its high anisotropy and Curie temperature. Different elements can be incorporated into CFO spinel matrix for tailored properties. The review covers types of ferrites, structural properties, and the effects of doping on CFO performance, focusing on recent research on CFO Nanoparticles.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2022)
Article
Polymer Science
C. Behera, N. Pradhan, P. R. Das, R. N. P. Choudhary
Summary: In this paper, the development of self-standing, lightweight, flexible polymer-cobalt ferrite nano-composite thin films is reported. The introduction of nano-cobalt ferrite particles in the ferroelectric polymer led to the formation of a major electroactive beta-phase and a small spherulite phase. The composite exhibited high relative permittivity, low tangent loss, and good thermal stability, making it suitable for flexible and lightweight capacitor devices. The material also showed significant contributions from grains and grain boundaries to its resistive and capacitive characteristics. Additionally, the composite exhibited ferromagnetic and ferroelectric behavior, with a strong magneto-electric coupling coefficient and potential for application as a field sensor.
JOURNAL OF POLYMER RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Atta Ur Rehman, M. Atif, M. Younas, T. Rafique, H. Wahab, A. Ul-Hamid, N. Iqbal, Z. Ali, W. Khalid, M. Nadeem
Summary: Magnetite (Fe3O4) nanoparticles were successfully prepared and characterized. The sample exhibited a single-phase cubic spinel structure and showed a semiconductor-metal-semiconductor like transition within a certain temperature range. It had a colossal dielectric permittivity and moderate conductivity, making it a potential candidate for electromagnetic absorbing materials.
Article
Optics
Roberto Francini, Fabio De Matteis, Zoryana Zhuchenko, Arkadiy Zolotovsky, Yuriy Bacherikov, Georgiy Tarasov
Summary: The peculiarities of the near-infrared and visible up-conversion spectra of nanocrystalline (Er2O3)x (ZrO2)1-x were investigated. It was found that the photoluminescence spectra of Er3+ in samples with 0.026 < x < 0.143 were defined by similar erbium environment, despite the different symmetry of the ZrO2 matrix. The emission bands in the 4I13/2 -> 4I15/2 transition range were measured and explained using a multi-electron molecular orbitals cluster model developed for nanocrystal structures. The role of intra-manifold 4I13/2 relaxation caused by spatial confinement effects in erbium-stabilized nanocrystalline zirconia was discussed.
JOURNAL OF LUMINESCENCE
(2023)
Article
Chemistry, Physical
Sachin R. Rondiya, Yogesh A. Jadhav, Aleksandar Zivkovic, Sagar B. Jathar, Ganesh K. Rahane, Russell W. Cross, Avinash Rokade, Rupesh S. Devan, Sadhu Kolekar, Robert L. Z. Hoye, Hirendra N. Ghosh, Nora H. de Leeuw, Sandesh R. Jadkar, Nelson Y. Dzade
Summary: By substituting Cd into Zn lattice sites, a structural transformation from the kesterite phase to the stannite phase in CZTS nanocrystals was induced, resulting in a reduced bandgap of 1.1 eV and an improved power conversion efficiency of 1.1% for the Cd-substituted solar cell. These results emphasize the significance of substitutional doping strategies in enhancing device characteristics of CZTS-based materials.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Subhash Chand Yadav, Alfa Sharma, Rupesh S. Devan, Parasharam M. Shirage
Summary: The influence of different counter electrode materials on the performance of TiO2 nanorod-based dye-sensitized solar cells (DSSCs) assembled with hibiscus dye was investigated. Carbon, graphite, and gold as counter electrode materials strongly affected the energy conversion efficiency of DSSCs. The introduction of a compact layer and the use of appropriate counter electrode materials can enhance the performance of the solar cells.
Article
Physics, Multidisciplinary
Kaushal H. Parmar, Vishesh Manjunath, Santosh Bimli, Parameshwar R. Chikate, Ranjit A. Patil, Yuan-Ron Ma, Rupesh S. Devan
Summary: Nickel oxide (NiO) nanostructures were synthesized and deposited on conducting glass substrates by hot-filament metal vapor deposition (HFMVD). The NiO exhibited good electrochromic behavior with high reversibility, short coloration and bleaching times.
CHINESE JOURNAL OF PHYSICS
(2022)
Article
Chemistry, Physical
Narasimharao Kitchamsetti, Manopriya Samtham, Pravin N. Didwal, Dhirendra Kumar, Diwakar Singh, Santosh Bimli, Parameshwar R. Chikate, Dudekula Althaf Basha, Sunil Kumar, Chan-Jin Park, Sudip Chakraborty, Rupesh S. Devan
Summary: This study reports the effect of morphological transformation from nano particles to ultrathin nanodiscs of MnTiO3 perovskites as an efficient electrode for electrochemical supercapacitors. The ultrathin 2D nanodiscs exhibited higher work-function and delivered better energy storage performance, with excellent capacitance retention after 5000 cycles.
JOURNAL OF POWER SOURCES
(2022)
Article
Materials Science, Multidisciplinary
Mohamed Alla, Santosh Bimli, Vishesh Manjunath, Manopriya Samtham, Abhishek Kasaudhan, Ekta Choudhary, Mustapha Rouchdi, Fares Boubker
Summary: In this study, preliminary investigations were conducted on three different perovskite light harvesters using the SCPAS-1D software package, aiming to develop stable and environmentally friendly perovskite materials. By analyzing and optimizing four different electron transport layers, high-performance light harvesters were obtained. The impact of operating temperature on solar cell parameters was also analyzed, and a comprehensive comparison of alternative counter electrodes was provided.
MATERIALS TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Subhash C. Yadav, Vishesh Manjunath, Abhishek Srivastava, Rupesh S. Devan, Parasharam M. Shirage
Summary: This article explores a lead-free and stable Cs4CuSb2Cl12 layered double perovskite light absorber and analyzes the impact of different film thickness, defects, and doping densities on the performance of the solar cells. The optimized Cs4CuSb2Cl12 perovskite solar cells show high power conversion efficiencies with and without p-type CuSCN. Furthermore, the article evaluates the influence of operating temperature on the performance of Cs4CuSb2Cl12 perovskite solar cells.
Review
Energy & Fuels
Manopriya Samtham, Diwakar Singh, K. Hareesh, Rupesh S. Devan
Summary: The production of energy using renewable energy sources and its storage is receiving attention due to the depletion of fossil fuels and growing energy demands. Electrochemical capacitors with high specific capacitance, power density, cyclic stability, and fast charging-discharging rates have become important for energy storage. Many researchers have focused on developing one-dimensional nanostructure electrode materials to enhance the energy storage ability of electrochemical capacitors, with conducting polymer nanostructures being highly desirable. However, their low specific capacitance and poor cyclic stability can be overcome by developing conducting polymer-based composites.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Materials Science, Multidisciplinary
Rupali Chavan, Nilesh Bhat, Santosh Parit, Kitchamsetti Narasimharao, Rupesh S. Devan, Rahul B. Patil, Vijay C. Karade, Nilesh Pawar, Jin Hyeok Kim, Jyoti P. Jadhav, Ashok D. Chougale
Summary: This work presents a facile green synthesis method for producing Fe3O4 magnetic nanoparticles (MNPs), which exhibit high catalytic activity in Fenton and photo-Fenton reduction reactions. The MNPs show spherical morphology and have an average diameter of 6.3 +/- 1.1 nm. The study demonstrates the superior efficiency of the MNPs in both processes at varied pH ranges. Additionally, the MNPs exhibit good reusability and can effectively reduce dye and Cr(VI) loads in water treatment processes.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Physics, Multidisciplinary
Santosh Bimli, Yashwanth K. Reddy, Vishesh Manjunath, Rupesh S. Devan
Summary: This study presents a highly stable and non-toxic kusachiite CuBi2O4 (CBO) as an excellent light harvester for thin-film photovoltaics. Different oxide heterostructure solar cells (AOHSC) combining CBO absorber with various metal oxides (MOs) were engineered and optimized, showing excellent power conversion efficiency under high acceptor carrier density of CBO absorber.
CHINESE JOURNAL OF PHYSICS
(2023)
Article
Chemistry, Analytical
Narasimharao Kitchamsetti, Manopriya Samtham, Diwakar Singh, Ekta Choudhary, Sachin R. Rondiya, Yuan -Ron Ma, Russell W. Cross, Nelson Y. Dzade, Rupesh S. Devan
Summary: Novel hybrid core-shell electrodes consisting of 2D and 1D nanomaterials are developed to address the relatively lower specific energy of supercapacitors. These electrodes, composed of hierarchical 2D MnO2 nanoflakes and 1D NTO mesoporous rods, provide a large surface area and enhanced OH- ions diffusion. The hybrid porous core-shell hetero-architecture of MnO2@NTO delivers high specific capacitance, specific power, and specific energy, with good retention in capacitance after cycling.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Energy & Fuels
Santosh Bimli, Vishesh Manjunath, Sameena R. Mulani, Aayushi Miglani, Onkar S. Game, Rupesh S. Devan
Summary: This study presents a comprehensive analysis of vacancy-ordered Cs2SnI6 perovskite as a light harvester in photovoltaic applications. The device architecture of FTO/ZnO/Cs2SnI6/HTL/Au, with different p-type metal oxides as hole transport layers, is systematically investigated using SCAPS-1D software. The optimized Cs2SnI6-based devices with CuBi2O4, Cu2O, CuAlO2, and NiO HTLs exhibit photoconversion efficiencies of 28.18%, 29.72%, 29.43%, and 29.33%, respectively.
Article
Materials Science, Multidisciplinary
Sameena R. Mulani, Santosh Bimli, Madhuri S. Patil, Umesh A. Kshirsagar, Rupesh S. Devan
Summary: The orthorhombic crystalline walnuts consisting of nanoparticles with an average size of -72 nm of stoichiometric LaFeO3 (LFO) exhibit excellent photocatalytic degradation properties for organic dyes. The LFO walnuts offer 10.280 m2/g surface area and have a band gap of 2.29 eV. Under continuous irradiation for 240 min, the degradation of Crystal Violet (CV), Methylene Blue (MB), and Rhodamine B (RhB) reach 96.02%, 90.22%, and 82.45% respectively, with rate constants of 0.012, 0.0096, and 0.0073 min-1. The LFO walnuts also demonstrate a sunlight driven degradation of -91% for organic CV dye. The study identifies the involvement of h+ and OZ in the photocatalytic degradation process and identifies the degradation intermediates using mass spectrometry.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Vishesh Manjunath, Santosh Bimli, Diwakar Singh, Rathindranath Biswas, Pravin N. Didwal, Krishna Kanta Haldar, Nishad G. Deshpande, Preeti A. Bhobe, Rupesh S. Devan
Summary: The feasibility of 1D porous NiO nanorods as an active electrode for capturing greenhouse CO2, effective supercapacitors, and efficient electrocatalytic water-splitting applications is reported in this study. The nanorods, formed by stacking cubic crystalline NiO nanoparticles with dimensions less than 10 nm, provide the necessary porosity. The NiO nanorods exhibit significant surface area, with a CO2 uptake of 63 mmol g(-1), a specific capacitance of 368 F g(-1), and good retention after 2500 cycles, as well as promising electrocatalytic water splitting performance.
Article
Chemistry, Multidisciplinary
Fillip Kumar Sarkar, Sushmita Gajurel, Lenida Kyndiah, Rajib Sarkar, Rupesh S. Devan, Amarta Kumar Pal
Summary: A palladium-containing metal-organic framework catalyst was designed for the C-H functionalization of unactivated arenes. The catalyst exhibited high activity in the reaction, with yields of the desired products ranging from 70-92% at room temperature. The mild reaction conditions, gram-scale synthesis, easy recovery, and reusability of the catalyst contribute to the sustainable advantages of the protocol.
NEW JOURNAL OF CHEMISTRY
(2022)
Review
Materials Science, Multidisciplinary
Vishesh Manjunath, Santosh Bimli, Parvez A. Shaikh, Satishchandra B. Ogale, Rupesh S. Devan
Summary: This review focuses on the functional significance and critical role of electron and hole transport layers in perovskite solar cells, aiming to optimize their performance and enhance the understanding of charge transport at the active interfaces.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)