Article
Engineering, Electrical & Electronic
Biman Kar, Pawan Kumar, Simanchalo Panigrahi, Rubina Ghosh, Anupinder Singh
Summary: The effect of sintering temperature on the magnetoelectric properties of a lead-free particulate composite was studied. The increase in sintering temperature resulted in an increase in grain size and connectivity of the constituent phases. This led to an enhancement in saturation polarization and a decrease in saturation magnetization at room temperature, resulting in the highest magnetoelectric coefficients for the composite.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Jiali Song, Zhi Wang, Yu Gao
Summary: Different annealing temperatures were used to prepare nanocrystalline Li0.35Ni0.3Fe2.35O4 ferrites through sol-gel auto-combustion method. The annealing temperature significantly affected the structure and magnetic properties of the synthesized Li-Ni ferrites, leading to an increase in grain size. The changes in saturation magnetization and coercivity were related to the occupation of ions in the crystal lattice and the size of the grains after annealing.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Materials Science, Ceramics
Yasir Abbas, M. Anis-ur-Rehman
Summary: This study emphasizes the importance of samarium doping in enhancing the structural and dielectric properties of bismuth calcium cobaltite. The results show that samarium doping increases the dislocation density and decreases the average crystallite size. The dielectric properties of the samples were measured at different frequencies and analyzed using non-linear modified Debye function and Jonscher's power law. The composition Bi2Ca1.95Sm0.05CoO6 exhibited higher dielectric constant, lower dielectric loss, and higher AC conductivity compared to other compositions, making it a preferable material for energy applications.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Chuan Chen, Qiang Zhang, Tianhao Yao, Hongkang Wang
Summary: This study reports a novel synthesis of shuttle-shaped NiCuZn ferrites through electrospinning and subsequent sintering, and systematically investigates the microstructural evolution and its effect on magnetic properties upon annealing at temperatures ranging from 500 to 1000 degrees C. The results show that the crystallite size decreases and the grain size increases with increasing sintering temperature, leading to an upward trend in saturation magnetization until a certain point where the crystalline structure and morphology change, resulting in lowered saturation magnetization.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Materials Science, Ceramics
Fangyi Huang, Hua Su, Qin Zhang, Xiaohui Wu, Yulan Jing, Yuanxun Li, Xiaoli Tang
Summary: The effect of Ti substitution on the microwave dielectric properties and structural characteristics of CaMgSi2O6 ceramics was investigated. It was found that the increase in Ti content led to the formation of CaTiO3, and the permittivity was correlated with ionic polarizability. The quality factor and temperature coefficient of resonant frequency were significantly influenced by lattice stability. Lattice energy and cation bonding also affected the microwave dielectric properties, and adjusting these parameters improved the performance of the ceramics.
CERAMICS INTERNATIONAL
(2022)
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
Engineering, Electrical & Electronic
M. S. Raja Seetharaman, P. Sivagurunathan
Summary: In this study, spinel ferrite nanoparticles with the chemical formula of MgxCo1 - xFe2O4 (x = 0.3, 0.5, 0.7) were successfully synthesized using the co-precipitation method. The structural, functional, morphological, and magnetic properties of the magnesium cobalt ferrite nanoparticles were discussed. The synthesized materials exhibited potential as high-density recording media applications.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Review
Chemistry, Physical
K. Snini, M. Akyol, M. Ellouze, L. El Mir, F. Ghribi, A. Ekicibil
Summary: The study focuses on preparing Pr0.67Ba0.22Sr0.11Mn0.975Ni0.025O3 compound and analyzing its electrical properties and metal-semiconductor transitions using impedance spectroscopy and conductivity analysis. The material is found to be suitable for high frequency energy storage devices.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Review
Biochemistry & Molecular Biology
Zhihui Ni, Hongjin Lv, Guoyu Yang
Summary: This review focuses on the structural diversities and catalytic applications of Ti/Zr-substituted polyoxometalates (POMs). The synthesis strategies of Ti/Zr-substituted POMs and their potential future development are discussed.
Article
Engineering, Electrical & Electronic
Z. Raddaoui, S. El Kossi, A. V. Trukhanov, A. L. Kozlovskiy, M. V. Zdorovets, J. Dhahri
Summary: This paper reports the vibrational and photoluminescence properties of BBTZN polycrystalline perovskite produced via the Molten Salt reaction, showing potential applications in white luminescent devices.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Polymer Science
Wei-Feng Peng, Huan-Yu Lei, Xin-Xin Zhang, Lu-Hao Qiu, Ming-Jun Huang
Summary: The study and development of transparent polyimides are of great significance in flexible display technology, and fluorine-substituted polyimides occupy a special position in transparent polyimides. This study investigated the effects of substitute groups on the properties of polyimides and found that fluorine substitution improved the thermal stability and mechanical strength of polyimides, while slightly decreasing optical transparency.
CHINESE JOURNAL OF POLYMER SCIENCE
(2022)
Article
Engineering, Electrical & Electronic
Minal A. Bhatt, Ashish R. Tanna
Summary: In this study, lithium-doped vanadium pentoxide samples were prepared using the solid-state synthesis method and their structural, compositional, and performance characteristics were investigated. It was found that lithium doping improves the electrical conductivity and energy storage capacity of vanadium pentoxide, with a decrease in the optical energy band.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Physical
Zhe Xiong, Xing Zhang, Zixuan Fang, Wenjuan Wu, Lezhong Li, Bin Tang, Shuren Zhang
Summary: By doping with (Al0.5Nb0.5)(4+) in Ca0.61Nd0.26TiO3 material, the quality factor of the samples was increased by nearly 60%. Subsequently, samples in the x range of 0-0.12 formed a single perovskite-structured phase, with a decrease in grain size as x increased, leading to a decline in dielectric constant and electrical conductivity.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Electrical & Electronic
Md. Harun-Or-Rashid, M. Nazrul Islam, M. Arifuzzaman, A. K. M. Akther Hossain
Summary: The effects of sintering temperature on the properties of polycrystalline Ni0.3Cu0.2Zn0.5Fe2O4 and Ni0.3Cu0.2Zn0.5Sc0.05Fe1.95O4 compounds have been thoroughly studied. It was found that the different sintering temperatures and scandium doping levels have significant impact on the structural, morphological, magnetic, dielectric, and electrical characteristics of these spinel ferrites. The investigated ferrites exhibit potential for various practical applications due to their high initial permeability, low magnetic loss, and low electrical conductivity across a wide frequency range.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Multidisciplinary Sciences
R. E. El shater, A. W. Awad, E. K. Abdel-Khalek, H. H. El-Bahnasawy, T. M. Meaz, Ehab A. Okba
Summary: Two ferrite series, one consisting of nanosize samples prepared by co-precipitation and the other consisting of bulk samples sintered at 1000 degrees C, were synthesized and analyzed. The nanomaterials exhibited larger crystallite size, theoretical density, and porosity compared to the bulk materials. Aggregation of nanoparticles was observed in the nanoscale samples, while the bulk specimens had limited surface area. Raman spectroscopy confirmed the presence of the spinel phase and variations in cation occupation ratios. Optical characterization indicated that the absorption cutoff frequency decreased with increased chromium content. The average optical bandgap was 3.6 eV for nanosamples and 4.6 eV for bulk materials. The strongest photoluminescence emission was observed at wavelengths between 415 and 460 nm, with red-shifted emission peaks in both bulk and nanoscale materials. Sintering resulted in an increase in photoluminescence.
SCIENTIFIC REPORTS
(2023)
Article
Engineering, Electrical & Electronic
Pallavi Saxena, P. Choudhary, A. Yadav, V. N. Rai, A. Mishra
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2020)
Article
Nuclear Science & Technology
V. N. Rai, Beena Jain, C. Mukherjee, P. Choudhary, Pallavi Saxena, A. Mishra
RADIATION EFFECTS AND DEFECTS IN SOLIDS
(2020)
Article
Materials Science, Multidisciplinary
Pallavi Saxena, P. Choudhary, A. Yadav, B. Dewangan, V. N. Rai, A. Mishra
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2020)
Article
Polymer Science
Susheel Patel, Pallavi Saxena, P. Choudhary, A. Yadav, V. N. Rai, A. Mishra
Summary: This study investigated the structural, optical, dielectric, and ferroelectric properties of Li+-doped Bi1/2Na1/2-xLixTiO3 nanoceramics. The results showed that Li+ doping affects the optical band gaps and dielectric properties of the nanoceramics. The ac conductance was found to increase with frequency, and the P-E hysteresis loops confirmed the ferroelectric nature of the ceramics.
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2021)
Article
Engineering, Electrical & Electronic
Bhargav Pathak, Pallavi Saxena, Pankaj Choudhary, Ashutosh Mishra, Anand Yadav
Summary: The synthesis of pristine and metal-doped cobalt aluminate samples was successfully achieved using the sol-gel auto-combustion method. The physical properties were investigated through X-ray diffraction and Raman spectroscopy, with Rietveld analysis providing precise structural parameters. Doping with Cu2+ and Zn2+ was found to increase stability and optical bandgap, supporting various advanced applications.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Inorganic & Nuclear
Pallavi Saxena, Ashutosh Mishra
Summary: The study confirmed that Cr doping in YMnO3 results in smaller crystal size, improved lattice parameters, enhanced conductivity, and the presence of multiferroic properties.
JOURNAL OF SOLID STATE CHEMISTRY
(2021)
Review
Electrochemistry
Mahesh Dhonde, Kirti Sahu, Malyaj Das, Anand Yadav, Pintu Ghosh, Vemparala Venkata Satyanarayana Murty
Summary: Dye-sensitized solar cells (DSSCs) are a promising photovoltaic technology with diverse indoor and outdoor applications. However, improving their efficiency, stability, and industrial production is still necessary. Recent advancements in materials and manufacturing processes have enhanced the performance of each functional component of DSSCs, including device structure, photoelectrodes, electrolytes, photosensitizers, catalyst materials, and encapsulation strategies.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Engineering, Electrical & Electronic
Pallavi Saxena, Bhargav Pathak, Prachi Joshi, Anand Yadav, Ashutosh Mishra
Summary: This study investigated the structural and dielectric features of Zn0.94Tm0.01Cu0.05O (Tm = Mn, Cd) nanoparticles synthesized by the sol-gel auto-combustion method. The nanoparticles were found to have a single phase with a hexagonal structure. Co-doping with Mn and Cd ions decreased the crystallite size and improved the unit cell volume. The co-doping also led to the formation of oxygen vacancies, altering the electrical characteristics and reducing the bandgap energy.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Physical
Lakhan Kumar Parmar, Priya Yadav, Ashok Kumar, Anand Yadav
Summary: The Mn1-xAxFe2O4 (A = Zn, Cr; x = 0.5) ferrite nanoparticles were synthesized using a low temperature gel autocombustion method, and their structures were confirmed by X-ray diffraction. The addition of Cr ions resulted in an increase in particle size and higher AC conductivity at high temperatures in both Cr and Zn doped Mn ferrite samples.
CHEMICAL PHYSICS IMPACT
(2023)
Proceedings Paper
Materials Science, Multidisciplinary
Pallavi Saxena, A. Yadav, P. Choudhary, Meenu Dinesh Varshney, A. Mishra
PROF. DINESH VARSHNEY MEMORIAL NATIONAL CONFERENCE ON PHYSICS AND CHEMISTRY OF MATERIALS (NCPCM 2018)
(2019)
Article
Physics, Applied
Anand Yadav, Pankaj Choudhary, P. Saxena, V. N. Rai, A. Mishra
JOURNAL OF ADVANCED DIELECTRICS
(2019)
