Article
Chemistry, Physical
Khiat Abd Elmadjid, Felicia Gheorghiu, Mokhtar Zerdali, Ina Turcan, Saad Hamzaoui
Summary: PbTi1-xFexO3-delta ceramics exhibited multifunctional properties that could be adjusted based on Fe3+ concentration, including reasonable dielectric, piezoelectric, and magnetic characteristics.
Article
Physics, Condensed Matter
Ritesh Verma, Preeti Thakur, An-Cheng Aidan Sun, Atul Thakur
Summary: In this study, cobalt-doped lithium ferrite nanoparticles were synthesized using the hydrothermal method. X-ray diffraction analysis confirmed the crystal structure and size changes, while scanning electron microscopy revealed the particle shape and boundaries. Complex impedance spectroscopy and electrical parameter analysis demonstrated the compositional dependence of conductivity and the impact of cobalt doping.
PHYSICA B-CONDENSED MATTER
(2023)
Article
Physics, Applied
Manish Kumar Bharti, Sonia Chalia, Preeti Thakur, Atul Thakur
Summary: Doping lanthanum ions in Mn-Zn-Cd nanoferrites alters the crystal structure, grain size, and magnetic properties, resulting in changes in dielectric constant and permeability.
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
(2021)
Article
Biochemistry & Molecular Biology
W. Aslam Farooq, Muhammad Sajjad Ul Hasan, Muhammad Iftikhar Khan, Ahmad Raza Ashraf, Muhammad Abdul Qayyum, Nafeesah Yaqub, Mona A. Almutairi, Muhammad Atif, Atif Hanif
Summary: A series of cobalt-inserted copper zinc ferrites with cubic spinel structure were prepared and characterized for their structural, optical and electrical properties. The study found that the lattice constant decreased with increased cobalt content, optical bandgap energy decreased, and DC electrical resistivity increased. The nanomaterials showed potential as candidates for telecommunication devices due to their DC electrical resistivity range.
Article
Chemistry, Physical
Hiral D. Shah, Archana Lakhani, J. A. Bhalodia
Summary: The structural, electrical, and magnetoresistance properties of Nd1-xPbxMnO3 were investigated with varying Pb concentrations. Different phases were observed based on the x values, with higher Pb content leading to higher metal-insulator transition temperatures and magnetoresistance values.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
L. Vedmid, O. Fedorova, V. Balakireva, S. Uporov, E. Sterkhov, S. Belyakov
Summary: The effect of barium substitution for gadolinium in Gd1-XBaXMnO3 on crystal structure, microstructure, magnetic and electrical properties was investigated. Increasing the concentration of barium resulted in a decrease in Mn3+ ions and changes in structural order. Porosity increased and grain size decreased with increasing barium concentration. Electrical conductivity increased up to 1.5 times with a concentration of barium at x = 0.25. The Curie temperature and magnetic properties changed with increasing substitution level. A phase diagram of the evolution of properties during Ba substitution in Gd1-XBaXMnO3 was presented. The magnetic and electrical properties are associated with structural distortions caused by gadolinium substitution with barium.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Engineering, Electrical & Electronic
S. A. Gad, Ali B. Abou Hammad, Amany M. ElNahrawy
Summary: This study investigated the properties of a series of (Sn0.7-xMo0.3 NdxO2+delta) (0.0 <= x <= 0.3) Nd3+ thin films prepared by sol-gel/spin coating technique. XRD analysis showed that all thin films had a Cassiterite structure. Substituting Nd3+ for Sn4+ ions in the crystal lattice caused a shift in absorption peaks to lower wavenumbers. The films' morphology was examined using SEM. Optical properties such as optical band gap, refractive index (n), and extinction coefficient (k) were studied based on the Nd content. Magnetic characteristics varied depending on the Nd concentration, with diamagnetic, paramagnetic, and ferromagnetic behavior observed. The introduction of active Nd3+ into the Sn:Mo host matrix was confirmed by the observed excitation dependent (PL) in the 350-700 nm range, which revealed two large bands at 425 and 466 nm.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Materials Science, Multidisciplinary
Md Suzauddulah, M. K. R. Khan, F. A. Khan, M. M. Rahman, M. S. I. Sarker
Summary: In this study, NixZn0.6_xMn0.4Fe2O4 nanoparticles were synthesized using the sol-gel method. The presence of Ni2+ ions significantly affected the properties of the Ni substituted Zn0.6_xMn0.4Fe2O4 nanoparticles. The formation of the spinel structure was confirmed by Fourier transform infrared (FTIR) spectroscopy analysis and Rietveld's refinement of X-Ray Diffraction (XRD) patterns. The electrical charge conduction behavior and dielectric properties were also investigated. The results showed that the Ni doped Zn0.6_xMn0.4Fe2O4 nanoparticles exhibited excellent dielectric behavior and could be used for various potential applications.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Inorganic & Nuclear
Amit Kumar Atri, Ujwal Manhas, Sumit Singh, Irfan Qadir, Shikha Sharma, Preteek Sharma, Devinder Singh
Summary: This study synthesizes new oxygen deficient triple layered Ruddlesden-Popper (RP) phases via sol-gel method and investigates the effects of Cr3+ doping on their structural, optical, magnetic, and photocatalytic properties. The experimental results demonstrate that Cr3+ doping alters the interactions and leads to excellent photocatalytic performance in some phases.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Physics, Applied
S. Kh Estemirova, V. Ya Mitrofanov, S. A. Uporov, G. A. Kozhina
Summary: The effect of Fe doping on the structural, magnetic, and magnetocaloric properties of La0.8Sr0.2Mn1-xFexO3 manganites was studied. Doping with iron did not change the structure but increased the unit cell parameters and microstrain. The samples showed a paramagnetic-ferromagnetic phase transition with decreasing transition temperature and decreasing magnetic entropy change and relative cooling power with increasing Fe content.
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
(2022)
Article
Materials Science, Ceramics
S. F. Mansour, Reem Al-Wafi, Mohamed Afifi, J. A. Turner
Summary: The influence of LSMO magnetic phase on BCZT ferroelectric phase was studied, with the composite sample containing 25% LSMO showing optimal ferroelectric and piezoelectric properties, and the sample with 75% LSMO exhibiting the highest magnetic properties and magnetoelectric coupling coefficient.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Inorganic & Nuclear
A. Agnaou, W. Mhaira, R. Essalim, A. Turino, A. Ammar, M. Zamama, M. Alga, F. Mauvy
Summary: The solid solution of general formula Bi4V2-xSix/2Px/2O11-delta (0.0 <= x <= 0.5) was synthesized and characterized using XRD, SEM, FTIR, ATD, Raman spectroscopy and Electrochemical Impedance Spectroscopy. The study found that compounds with x <= 0.3 have the same crystal structure as the monoclinic alpha polymorph, while the compound with x = 0.4 crystallizes in the beta polymorph. The electrical conductivity of the substituted samples was measured as a function of composition in the temperature range from 25 to 700 degrees C. In the low temperature range, the doped compounds exhibited higher conductivity than the parent compound Bi4V2O11. The highest conductivity was obtained for x = 0.1.
JOURNAL OF SOLID STATE CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Hiral D. Shah, J. A. Bhalodia
Summary: Nd1-xPbxMnO3 compounds with x <= 0.4 were synthesized using a modified sol-gel method, and their structural and morphological features were analyzed through X-ray diffraction and electron microscopy. The magnetic properties of the samples were investigated using a vibrating sample magnetometer, revealing a significant impact of Pb doping on the ferromagnetic transition temperature.
JOURNAL OF SOLID STATE CHEMISTRY
(2021)
Article
Chemistry, Physical
Viktor A. Tsvinkinberg, Anna S. Tolkacheva, Elena A. Filonova, Olga Gyrdasova, Sergey M. Pikalov, Vladimir A. Vorotnikov, Aleksey Vylkov, Nikolay Moskalenko, Elena Yu Pikalova
Summary: La2-xGdxNiO4+delta compounds synthesized via formate pyrolysis show potential as cathode materials for IT-SOFCs, with superior crystal structure and oxygen over-stoichiometry values compared to undoped or alkali-earth element doped materials. The chemical and thermo-mechanical compatibility with Ce0.8Gd0.2O1.9 solid-state electrolyte was also studied, indicating promising applications in increasing efficiency and durability of SOFCs.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Ceramics
Zexing Wang, Yunfeng Guo, Jiamao Li
Summary: In this paper, a series of Li2Zn[Ti1-x(Co1/3Nb2/3)x]3O8 ceramics were prepared via the conventional solid-state method. The influences of (Co1/3Nb2/3)4+ complex ions on the phase composition, spectral characteristics, microstructure, and microwave dielectric properties of Li2Zn[Ti1-x(Co1/3Nb2/3)x]3O8 ceramics were systematically studied. The study found that the presence of (Co1/3Nb2/3)4+ content affected the structure, performance, and microwave dielectric properties of Li2Zn[Ti1-x(Co1/3Nb2/3)x]3O8 ceramics.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Brajendra Singh, Samayendra Kumar, Naresh Saha, Bikramjit Basu, Rajeev Gupta
BULLETIN OF MATERIALS SCIENCE
(2015)
Article
Materials Science, Multidisciplinary
Brajendra Singh
Article
Chemistry, Physical
Brajendra Singh
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2016)
Article
Materials Science, Multidisciplinary
Brajendra Singh, Aditya Tandon, Anand K. Pandey, Priyanka Singh
JOURNAL OF MATERIALS SCIENCE
(2018)
Article
Materials Science, Ceramics
Brajendra Singh, Samayendra Kumar, Bikramjit Basu, Rajeev Gupta
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2015)
Article
Engineering, Electrical & Electronic
Brajendra Singh, Aditya Tandon, Priyanka Singh, Anand Kumar Pandey
JOURNAL OF ELECTRONIC MATERIALS
(2018)
Article
Materials Science, Multidisciplinary
Brajendra Singh, S. S. Manoharan
Article
Materials Science, Multidisciplinary
Brajendra Singh, Samayendra Kumar, Bikramjit Basu, Rajeev Gupta
Article
Physics, Multidisciplinary
Satnam Singh
INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS
(2020)
Article
Physics, Applied
Priyanka Singh, Brajendra Singh, Mukul Gupta
Summary: In this study, the structural, magnetic, and magnetoimpedance properties of La0.7Pb0.3Mn0.35Fe0.65O3-δ and La0.7Pb0.3Mn0.3Fe0.7O3-δ manganites were investigated. Fe doping affected lattice parameters and induced oxygen non-stoichiometry, leading to positive magnetoimpedance. Fe+3 doping at the Mn site created chemically modified phase separated systems, resulting in huge positive magnetoimpedance effects.
EUROPEAN PHYSICAL JOURNAL-APPLIED PHYSICS
(2021)
Article
Spectroscopy
B. Singh, P. Singh, M. Gupta
Summary: The effect of sintering temperature on the structure and valence states of Ru-Mn in Li2Mn0.9Ru0.1O3 was investigated. Results showed that at lower sintering temperature, mixed valence states Ru+4 and Ru+5 were present, while at higher temperature only the Ru+4 valence state was observed.
JOURNAL OF APPLIED SPECTROSCOPY
(2021)
Article
Materials Science, Ceramics
Priyanka Singh, Brajendra Singh, Mukul Gupta
Summary: This study investigated the positive magneto capacitance in La0.66Pb0.3Mn0.4Ti0.56O3 and negative magneto capacitance in La0.7Pb0.3Mn0.4Fe0.6O3 due to interactions of different valence states, with Fe-doped composition showing a significantly higher magnetic moment than Ti-doped composition.
CERAMICS INTERNATIONAL
(2022)
Proceedings Paper
Materials Science, Multidisciplinary
Priyanka Singh, Brajendra Singh
Summary: In this study, the structural and dye degradation properties of Li2Mn0.95Ru0.05O3 synthesized using solid state synthesis method were investigated. The results showed that the Ru-doped Li2Mn0.95Ru0.05O3 has potential as a reusable catalyst for degrading methylene blue dye solutions through redox interaction between Ru and Mn.
MATERIALS TODAY-PROCEEDINGS
(2021)
Article
Multidisciplinary Sciences
Brajendra Singh, Priyanka Singh
SN APPLIED SCIENCES
(2020)
