Article
Chemistry, Physical
V Poojitha, S. Mahalakshmi, K. Santhi, S. Nithyanatham
Summary: In this study, multiferroic bismuth ferrite was prepared using the sol-gel method and its structural and optical characteristics were examined. X-ray diffraction and Fourier transform infrared analysis were used to study the structure, while field emission scanning electron microscopy was used to observe the morphology. The research found that bismuth ferrite has potential importance in applications such as high dielectric constant capacitors and hard disc components.
SURFACES AND INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
S. Shankar, O. P. Thakur, M. Jayasimhadri
Summary: Multiferroic composites of (1-x)NdMnO3 - (x)BaTiO3 show distinct peaks of orthorhombic NdMnO3 and tetragonal BaTiO3 with improved conducting nature and giant dielectric behavior in NMO-20BT composite. Impedance measurements confirm improved resistivity and thermally activated non-Debye type conduction behavior in NMO-BT composites. Enhanced remnant magnetization and improved magnetoelectric coupling due to lattice stability establish multiferroism in NMO-BT composites.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Polymer Science
Neeha Pradhani, P. K. Mahapatra, R. N. P. Choudhary
Summary: A perovskite ceramic oxide, stannum modified bismuth sodium titanate (Bi0.5Na0.5Ti0.80Sn0.20O3), was synthesized using a mixed oxide powder reaction route. X-Ray diffraction analysis confirmed the polycrystalline nature of the compound with tetragonal symmetry. The study investigated the temperature and frequency dependence of dielectric properties and AC conductivity data, demonstrating that doping with stannum enhances the dielectric characteristics of the material.
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2021)
Article
Chemistry, Physical
Sukhendu Sadhukhan, Abhik S. Mahapatra, Ayan Mitra, Pabitra K. Chakrabarti
Summary: Nanocrystalline holmium orthoferrite (HoFeO3) was synthesized using the chemical sol-gel technique. Structural investigation and magnetization measurements revealed its multiferroic behavior, establishing its candidacy for multiferroic applications in M-E devices.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Yuhai Qu, Xiaoming Sun, Wanyuan Gui, Runguang Li, Zhihua Nie, Zhiyong Gao, Wei Cai, Yang Ren, Yandong Wang, Daoyong Cong
Summary: Magnetic-field-induced first-order magnetostructural transition (MFI-FOMST) has various magnetoresponsive effects, but practical applications have been limited by the high critical field. In this study, we achieved complete and reversible MFI-FOMST under a low field of 1.5 T in a prototype shape memory alloy. This was made possible by enlarging the distance between Curie transition and magnetostructural transition and manipulating the geometric compatibility between phases. The low critical field provides opportunities for low-field-induced large reversible magnetoresponsive effects and practical applications of MSMAs.
Article
Chemistry, Physical
Iliana N. Apostolova, Angel T. Apostolov, Julia M. Wesselinowa
Summary: Using a microscopic model, the properties of pure and ion doped CoCr2O4 - bulk and NPs were studied. It was found that the magnetization and Curie temperature decrease with decreasing particle size, and different effects were observed with Fe and Mg doping due to the different strains caused by doping ions. The polarization increases with increasing Fe doping concentration, and anomalies in specific heat were observed at specific temperatures.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
N. Ortiz Hernandez, S. Parchenko, J. R. L. Mardegan, M. Porer, E. Schierle, E. Weschke, M. Ramakrishnan, M. Radovic, J. A. Heuver, B. Noheda, N. Daff, J. Dreiser, H. Ueda, U. Staub
Summary: The spin configuration in multiferroic thin films of Ge-CCO and CCO was studied using soft x-ray resonant magnetic scattering under low and high magnetic fields. The transition temperatures and behaviors were found to be comparable between Ge-CCO and CCO, but Ge-CCO exhibited larger ordering wave vector and different polarization dependence compared to CCO. Unexpected reversal of the spiral helicity and change in helicity with momentum transfer were observed in Ge-CCO, indicating the presence of multiple magnetic spirals.
Review
Metallurgy & Metallurgical Engineering
Youhong Peng, Kesong Miao, Wei Sun, Chenglu Liu, Hao Wu, Lin Geng, Guohua Fan
Summary: Characterizing the microstructure and deformation mechanism of metallic materials is crucial for understanding the microstructure-property relationship. Advanced synchrotron radiation facilities have enabled non-destructive visualization of full-field structural information in three dimensions, contributing to significant progress in recent decades. Future innovations in next-generation synchrotron radiation and emerging technologies hold great potential for further advancements in material characterization.
ACTA METALLURGICA SINICA-ENGLISH LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Zahid Hasan, Hasan Khaled Rouf, Mohammed Nazrul Islam Khan
Summary: Multiferroic composites of (1-x) Ba0.77Ca0.23TiO3 + x Ni0.6Zn0.25La0.15Fe2O4 have been synthesized and their properties systematically investigated. The XRD and SEM analyses show the structural and grain size changes, while VSM measurements reveal the magnetic behavior with increasing ferrite content. The dielectric constant behavior with frequency and AC conductivity from dielectric properties are also described.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Engineering, Chemical
Souvick Das, Ayan Mitra, Sukhendu Sadhukhan, Amitabh Das, Souvik Chatterjee, Pabitra K. Chakrabarti
Summary: Monophasic nanocrystalline lead-free relaxor ferroelectric samples of YFeO3 and Co(0.05)Y(0.95)Fe(0.95)Ti(0.05)O(3) were prepared, and the influence of Co and Ti co-doping on their structural, dielectric, ferroelectric, and magnetic properties was investigated. The results showed enhanced multiferroic properties in the co-doped samples.
ADVANCED POWDER TECHNOLOGY
(2022)
Article
Polymer Science
V. Jagadeesha Angadi, K. Manjunatha, Ming-Kang Ho, Sheng Yun Wu, Mohd Ubaidullah, Abdullah M. Al-Enizi, Bidhan Pandit, B. Chethan
Summary: This research investigates the structural, microstructural, Raman, XPS, and humidity sensing behavior of Sm3+ doped cobalt chromite. The results show that increasing samarium concentration can improve the electrical properties and humidity sensing performance of the material.
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Shane Q. Arlington, Tobias Neuhauser, Markus Short, Karsten Woll, David A. LaVan, Gregory M. Fritz, Timothy P. Weihs
Summary: Reactive nanolaminates are energetic materials with heterogeneous microstructures that undergo self-propagating exothermic reactions to form stable compounds. This study investigates the phase formation in Al/Zr/C reactive nanolaminates under different heating rates using nanocalorimetry, synchrotron X-ray diffraction, and ex situ analyses. The results reveal that high heating rates or quenching from high temperatures are required to produce the desired ZrC + Al cermet phases.
MATERIALS & DESIGN
(2023)
Article
Materials Science, Multidisciplinary
Mamta Shandilya, Ritesh Verma
Summary: The synthesis of BCT-NF multiferroic composite using solid-state reaction method was reported in this study, with XRD and Raman spectroscopy confirming the existence of both ferroelectric and ferromagnetic phases. Electrical and magnetic analysis showed that the composition x = 0.2 exhibited optimal performance.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Pooja Pant, Harshit Agarwal, Suresh Bharadwaj, Sachin Srivastava, Archna Sagdeo, M. A. Shaz
Summary: The effect of improved dielectric properties in the presence of an applied magnetic field is discussed in poly-crystalline Gd0.55Pr0.45MnO3 complemented by the structural and magnetic properties. Enhanced dielectric permittivity and low dielectric loss represent the strongly field-dependent dielectric behavior of the sample. The structural characterizations confirm the orthorhombic symmetry and lack of structural transition at lower temperatures.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Lei Pan, Indra Raj Pandey, Antonino Miceli, Vladislav V. Klepov, Duck Young Chung, Mercouri G. Kanatzidis
Summary: A perovskite CsPbBr3 single-crystal detector capable of operating at high X-ray fluxes is reported. The detector shows good performance in terms of gamma-ray energy resolution, dark current, photocurrent linearity, and reproducibility at different X-ray energy levels. It is anticipated that CsPbBr3 detectors will have wide application in high-flux X-ray detection.
ADVANCED OPTICAL MATERIALS
(2023)
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
Nanoscience & Nanotechnology
U. Jain, N. Keskar, B. Vishwanadh, K. V. Mani Krishna, C. Gupta, A. K. Sinha, R. Tewari, D. Banerjee
Summary: The deformation and recrystallization behavior, precipitation formation, and structure-property correlations were investigated in the V-Ti-Ta alloy system. It was found that Ta plays a significant role in the strengthening mechanism and precipitation behavior of the alloy. The composition of the precipitates was identified as (Ti,Ta)CON, in contrast to the V-Ti-Cr system.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Chemistry, Inorganic & Nuclear
Preeti Pokhriyal, Ashok Bhakar, M. N. Singh, Himanshu Srivastava, Parasmani Rajput, Pankaj Sagdeo, Arvind Srivastava, N. P. Lalla, A. K. Sinha, Archna Sagdeo
Summary: A ceramic sample of CuCrO2 was synthesized using a solid-state reaction method, and various measurements were conducted to investigate its properties. The presence of relaxor-type ferroelectricity in the sample was confirmed through ferroelectric, dielectric, pyroelectric, and TEM analyses. The distorted CrO6 octahedra were identified as the cause of strain in the sample, leading to the formation of nano regions speculated to be polar and responsible for the observed relaxor-type ferroelectricity.
SOLID STATE SCIENCES
(2021)
Article
Chemistry, Inorganic & Nuclear
Preeti Pokhriyal, Anil Kumar, M. N. Singh, Pankaj Sagdeo, A. K. Sinha, Archna Sagdeo
Summary: Delafossites (ABO2) are of great interest due to their interesting structural and magnetic transitions. The distortions in octahedra of delafossites can influence the structural and physical properties of materials. This study found that the distortion of CrO6 octahedra in CuCrO2 decreases with increasing temperature.
SOLID STATE SCIENCES
(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)
Article
Chemistry, Physical
V. C. Bharath Sabarish, A. Durairajan, M. P. F. Graca, M. A. Valente, J. Gajendiran, B. N. Rajasekhar, Rajeev Bhatt, Indranil Bhaumik, A. K. Karnal, Anil Kumar Sinha, Manvendra Narayan Singh, S. Gokulraj, G. Ramesh Kumar
Summary: The synthesis and growth of single crystals of glycine-di-glycinium sulphate (TGS) along the <011> direction were conducted, followed by gamma irradiation to observe possible bond breaking mechanisms and formation of free radical ions. Thermo-mechanical parameters were computed, crystal imperfections were assessed through HRXRD, and changes in optical constants were noticed. Piezoelectric and ac-conductivity measurements confirmed bond rupture and deterioration of crystal properties post irradiation.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
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)
Article
Chemistry, Physical
R. N. Bhowmik, R. J. Choudhary, Priyanka Mitra, V. R. Reddy, A. K. Sinha
Summary: The study demonstrates the enhancement of ferromagnetic properties in Ga doped hematite thin films grown using Pulsed Laser Deposition technique, with unusual magnetic spin order and exchange bias effect observed at reduced dimensions (2D). Magnetic parameters such as magnetization and coercivity show dependence on composition, deposition conditions, and heat treatment. The chemical states of Fe ions in the films vary between high spin Fe3+ and Fe2+ states based on composition.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Arindam Majhi, Maheswar Nayak, Paresh Chandra Pradhan, Suvendu Jena, Anil Gome, Manvendra Narayan Singh, Himanshu Srivastava, Varimalla Raghvendra Reddy, Arvind Kumar Srivastava, Anil Kumar Sinha, Dinesh Venkatesh Udupa, Ullrich Pietsch
Summary: By controlling the microstructure of metal layers, high-efficiency W/B4C multilayer optics with desirable optical and stress properties can be developed. The research demonstrates significantly high reflectivities of these multilayer optics in the energy range of 10-20 keV.
Proceedings Paper
Materials Science, Multidisciplinary
Mahendra Singh Yadav, A. K. Sinha, M. N. Singh, Ashish Kumar
Summary: CuO nanoparticles were synthesized at different temperatures using chemical co precipitation method, and mixed with activated charcoal powder to form nanocomposite for electrode material in ultracapacitor. The nanocomposite synthesized at 600 degrees C exhibited superior performance, with a nanoparticle to charcoal mass ratio of 1:1 being optimal for electrochemical performance.
MATERIALS TODAY-PROCEEDINGS
(2021)
