Article
Materials Science, Ceramics
Kungwan Kang, Jinho Byun, Mijung Jeen, Giryeon Jo, Youn-Kyoung Baek, Jaekwang Lee, Hyoungjeen Jeen
Summary: Polycrystalline M-type strontium hexaferrite was synthesized and the effect of sintering conditions on its physical properties was studied. The results showed that longer sintering time led to grain growth, decrease in coercive field, and changes in electrical properties.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Rajendra Meher, Rajib Padhee, S. K. Parida
Summary: This report discusses the synthesis and characterization of 0.5BiFeO3-0.5MgTi1-xCexO3 (x = 0, 0.03, 0.06, and 0.1) (BFMTO) ceramics, including structural, dielectric, and optical properties. The XRD analysis confirms the formation of orthorhombic crystal symmetry and suggests a correlation with the tolerance factor. The microstructural analysis reveals well-defined grain boundaries and uniformly distributed grains. The study of dielectric and impedance properties indicates non-Debye relaxation and a negative temperature coefficient of resistance. Moreover, the UV visible spectra analysis predicts a suitable energy bandgap for photovoltaic applications.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Chemistry, Physical
Rajendra Meher, Rajib Padhee, S. K. Parida
Summary: This study reports the synthesis and characterization of 0.5BiFeO3-0.5MgTi1-xCexO3 ( x = 0, 0.03. 0.06 and 0.1) (BFMTO) ceramics, including structural, dielectric, and optical analysis. The results confirm the orthorhombic crystal symmetry and the presence of uniformly distributed grains with well-defined boundaries. The dielectric properties suggest the presence of the Maxwell-Winger type of dispersion and a non-Debye type of relaxation. The compound shows a negative temperature coefficient of resistance (NTCR) character and has a suitable energy bandgap for photovoltaic applications.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Materials Science, Ceramics
Nighat Zahoor, Muhammad Azhar Khan, Ghulam Abbas Ashraf, Muhammad Junaid, Shagufta Gulbadan, Khalid Mahmood
Summary: BaMg2TbxFe16-xO27 (x = 0.00, 0.04, 0.08, 0.12 and 0.16) hexaferrites were synthesized by sol-gel auto combustion method. The structural, spectral, and dielectric properties of the synthesized hexaferrites were characterized. The lattice parameters showed changes with Tb3+ substitution, and the force constants increased, indicating strong inter-molecular bonding. The dielectric characteristics varied with Tb3+ incorporation and frequency, with an increasing trend for dielectric constant, dielectric loss factor, tan loss, and ac conductivity. The obtained results suggested potential applications in microwave frequency attenuating devices, recording and storage media, and electrical components.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Tahira Akhter, Hasan M. Khan, Shehla Honey, Syed Sajjad Hussain, Muhammad Zahid, Muhammad Sufyan Javed, Razan A. Alshgari, M. S. Saleh Mushab, Patrizia Bocchetta, Mohd Zahid Ansari
Summary: This study synthesized rare earth substituted W-type hexagonal ferrites using a sol-gel auto combustion method and investigated their structural, magnetic, spectral, and dielectric properties. The results showed that the substitution of Ytterbium improved the magnetic properties of the materials and had the potential to reduce coercivity and enhance electrical characteristics.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Multidisciplinary
Zijing Dong, Yongping Pu, Guodong Shen
Summary: A microwave sintering procedure was used to produce high-quality multiferroic composites. The results showed that BaFe12O19 particles were evenly isolated by BaTiO3 particles, and a significant magnetodielectric effect was observed at room temperature under a magnetic field, demonstrating its potential for applications.
Article
Materials Science, Ceramics
S. Mishra, R. N. P. Choudhary, S. K. Parida
Summary: In this study, the synthesis and characterization of Li/Fe modified barium tungstate BaWO4 double perovskite were reported. The material exhibited tetragonal symmetry with good dispersion and electrical properties. The frequency and temperature dependence of the material's capacitive and resistive characteristics showed dielectric dispersion, relaxation, and non-Debye type of conduction mechanism. The material also had semiconductor nature, suitable energy bandgap, and stability, making it potentially useful for thermistor-related and optoelectronic devices.
CERAMICS INTERNATIONAL
(2022)
Article
Physics, Condensed Matter
M. Okutan, M. Ozturk, A. Kirsoy, I Araz, T. Yener, O. Yalcin
Summary: The electromagnetic properties of Ce-Zn substituted barium hexaferrite were analyzed to understand its role in microwave absorber and electronic device applications. The study revealed that the composition and bandwidth have significant impacts on the magnetic and electrical properties.
PHYSICA B-CONDENSED MATTER
(2022)
Editorial Material
Geochemistry & Geophysics
James Macnae, Nikita Zorin
Summary: The Cole-Cole model predicts two non-identical but related time constants for the frequency dependence of complex conductivity and resistivity. The shorter time constant ts predicts the current response to a voltage step, related to intrinsic properties of the polarizable component in mineralized grains. The longer time constant t(?) predicts the voltage response to a current step, dependent on intrinsic material properties and volume of polarizable material.
Article
Chemistry, Physical
B. Gowtham, V Balasubramani, S. Ramanathan, Mohd Ubaidullah, Shoyebmohamad F. Shaikh, Gedi Sreedevi
Summary: Impedance spectroscopy was used to measure the electrical conductivity and dielectric properties of WO3 nanostructures, revealing that the conductivity is influenced by frequency and temperature. The frequency exponent 's' decreases with increasing temperature, indicating the presence of the correlated barrier hopping mechanism in WO3 nanostructures.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
M. N. V. Ramesh, K. V. Ramesh
Summary: The study investigated the electrical properties of zirconium substituted lead-free ceramic materials, showing an increase in grain resistance with Zr substitution. Modulus spectroscopic studies also confirmed the non-Debye relaxation process in the material. Variations in normalized values of Z''/Z''(max) & M''/M''(max) with frequency indicated the presence of short range conductivity in the material.
Article
Materials Science, Multidisciplinary
Sudhanshu Kumar, A. K. Shukla, K. Sreenivas
Summary: This study investigates the conduction mechanism in magnesium ferrite ceramics through dc conductivity, dielectric, impedance, and modulus spectroscopy. The results show that the conductivity changes with temperature, and the AC conductivity follows a specific power-law pattern.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Materials Science, Ceramics
Saiqua Siddiqui, Divyanshu Singh, Priyanka Singh, Brajendra Singh
Summary: In this study, La0.55Li0.35TiO3-& delta; (LLTO), La0.55Li0.35Ti0.9Cu0.1O3-& delta; (LLTCO), and La0.55Li0.35Sr0.1Ti0.9O3-& delta; (LLSTO) samples were prepared by solid state reaction method. It was found that LLTO exhibited the highest dielectric constant, while LLSTO had the lowest dielectric loss. X-ray diffraction technique and UV-visible diffuse reflectance spectroscopy were used to investigate the crystal structure and optical properties of the samples.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Multidisciplinary Sciences
Muhammad Shakil Shah, M. S. Al-Buriahi, Z. A. Alrowaili, Abdulaziz N. Alharbi, Zakaria M. M. Mahmoud, Rabia Yasmin Khosa, Sultan J. Alsufyani, Hafiz Muhammad Tahir Farid
Summary: Strontium-based spinel ferrites prepared by sol-gel technique showed enhanced impedance and reduced magnetization, permeability, and permittivity with the involvement of erbium ions, indicating potential for microwave absorption applications.
JOURNAL OF TAIBAH UNIVERSITY FOR SCIENCE
(2021)
Article
Physics, Condensed Matter
M. Ozturk, R. Coskun, M. Okutan, O. Yalcin, A. Kirsoy
Summary: The structural, optical, and dielectric properties of low-concentration reactive red 45 dye loaded hydrogels were investigated. The study found that the material is suitable for electrical circuit applications and exhibits conductivity.
PHYSICA B-CONDENSED MATTER
(2022)
Article
Engineering, Electrical & Electronic
Khushboo, Nikhar Bhargava, Khyati Anand, Praveen Malik, Puneet Sharma, Divya Jayoti, K. K. Raina
INTEGRATED FERROELECTRICS
(2017)
Article
Engineering, Electrical & Electronic
Shivani Jindal, Kamaldeep Kaur, N. K. Verma, Puneet Sharma
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2018)
Article
Chemistry, Multidisciplinary
Khushboo, P. Sharma, P. Malik, K. K. Raina
Article
Materials Science, Ceramics
Santhoshkumar Mahadevan, Sukhleen Bindra Narang, Puneet Sharma
CERAMICS INTERNATIONAL
(2019)
Article
Physics, Applied
Anoop Pratap Singh, O. P. Pandey, Puneet Sharma
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
(2020)
Article
Chemistry, Physical
Chhavi Pahwa, Sukhleen Bindra Narang, Puneet Sharma
JOURNAL OF ALLOYS AND COMPOUNDS
(2020)
Article
Engineering, Electrical & Electronic
Shivani Jindal, Puneet Sharma
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2020)
Article
Physics, Applied
Samiksha Verma, Santhoshkumar Mahadevan, Chhavi Pahwa, Anoop Pratap Singh, Sukhleen Bindra Narang, Neha Aggarwal, Puneet Sharma
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
(2020)
Article
Engineering, Electrical & Electronic
Santhoshkumar Mahadevan, Vasant Sathe, V. Raghavendra Reddy, Puneet Sharma
IEEE TRANSACTIONS ON MAGNETICS
(2020)
Article
Engineering, Electrical & Electronic
Shivani Jindal, Puneet Sharma
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2020)
Article
Engineering, Electrical & Electronic
Chhavi Pahwa, Santhoshkumar Mahadevan, Sukhleen Bindra Narang, Puneet Sharma
Summary: The exchange-coupled BaFe12O19 (BaM)/CoFe2O4 (CFO) and BaM/Co0.5Zn0.5Fe2O4 (CZFO) composites were synthesized using the autocombustion method, and the effect of soft phase weight fraction on structural, magnetic, and microwave properties was investigated. The composites showed strong dependence on exchange interactions between hard and soft magnetic spins, with higher saturation magnetization compared to BaM. The study developed exchange-coupled magnetodielectric materials with high dielectric constant and permeability for various microwave applications.
IEEE TRANSACTIONS ON MAGNETICS
(2021)
Article
Chemistry, Physical
Shivani Jindal, Puneet Sharma
Summary: In this study, hydrothermally synthesized transition metal and rare earth doped ZnS nanoparticles were investigated for their structural, morphological, optical, and magnetic properties. The nanoparticles showed tunable optical band gaps and ferromagnetic nature, with potential applications in optoelectronic and spintronic devices.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Electrical & Electronic
Parminder Singh, Radhapiyari Laishram, Puneet Sharma, Jayant Kolte
Summary: The preparation and characteristics of BNT and NFO composite ceramics were investigated, revealing the optimum leakage current density and giant magnetocapacitance effect at certain NFO content.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Materials Science, Multidisciplinary
Anoop Pratap Singh, O. P. Pandey, Puneet Sharma
Summary: Z-type ferrites with Bi2O3 and SiO2 additives were prepared, and their electrical transport properties were investigated by impedance spectroscopy. The results showed that the additives segregated along the grain boundaries and had their own resistance, which was confirmed by the peak broadening in the impedance spectra. The study also found that the dynamic process of charge carriers was temperature dependent.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
