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Article
Chemistry, Physical
Muhammad Javed et al.
Summary: In this study, MnCr2O4 ceramic oxide was synthesized using a sol-gel method, showing a normal spinel structure. Complex impedance spectroscopy was used to investigate the relaxation times and thermal activation of charge carriers, while an equivalent circuit model was used to analyze the electrical response of the material. The study also highlighted the importance of grains in the conduction mechanism.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Jamal Kazmi et al.
Summary: Co-doped ZnO nanowires with different Co concentrations were successfully synthesized using a hydrothermal method at low temperature. Various techniques were employed to analyze the samples, confirming the structural and magnetic properties of the nanowires. The experimental findings were further validated through density functional theory calculations, revealing the ferromagnetic nature of the Co-doped ZnO system.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Siti Shafura A. Karim et al.
Summary: Human serum albumin (HSA) plays a crucial role in the human body system, and the ZnO NRs-FET immunosensor demonstrated in this study successfully quantifies HSA with good stability in complex biological matrices.
JOURNAL OF MATERIALS SCIENCE
(2021)
Article
Physics, Applied
Jamal Kazmi et al.
Summary: In this study, theoretical and experimental analysis of Bi-Co co-doped zinc oxide nanowires (ZnO NWs) revealed that the alignment of relative spin and the location of Bi3+ and Co2+ are the primary cause of magnetism. Experimental findings indicate that NWs are mainly aligned along the c-axis, with Bi and Co existing at substitutional sites, leading to a decrease in optical band gap and an increase in electron concentration upon doping.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
Rehana Bilkees et al.
Summary: In this study, polycrystalline La0.7Bi0.3Fe0.5Mn0.5O3 maganite was synthesized using sol-gel auto-combustion method. The material exhibited highly resistive grain boundaries and comparatively conducting grains, with a temperature independent dynamic process in electro-active regions. Analysis of impedance data revealed physical parameters associated with grains and grain boundaries, as well as dispersion in dielectric properties attributed to space charge polarization. The electrical conductivity followed Mott's T1/4 law and showed a frequency-dependent behavior consistent with variable-range hopping conduction.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Muhammad Javed et al.
Summary: The ternary spinel chromite ZnCr2O4 was synthesized using the sol-gel auto-combustion method and its dielectric relaxation and transport behavior were studied in detail through complex impedance spectroscopy. Two relaxation processes were observed in the material, with non-overlapping small polaron tunneling identified as the dominant electrical transport mechanism. The AC conductivity followed Jonscher power law and the DC conductivity obeyed Mott and Davis law. Discussions were made on the frequency and temperature dependence of dielectric constant and loss factor.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2021)
Article
Chemistry, Physical
Siti Shafura A. Karim et al.
Review
Biochemistry & Molecular Biology
Varun et al.
