Article
Chemistry, Physical
E. P. Skipetrov, E. Bogdanov, B. B. Kovalev, L. A. Skipetrova, A. Knotko, A. Emelyanov, A. N. Taldenkov, V. E. Slynko
Summary: We synthesized a single-crystal Pb1-x-ySnxScyTe ingot and studied the magnetic properties of alloys cut from it. The samples exhibited paramagnetic contribution at low temperatures and high-temperature ferromagnetic ordering in p-type samples, with spin-glass-like behavior and ferromagnetic hysteresis loops detected at temperatures below 100 K.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
A. M. Babanli, M. Balci, V. Sabyrov
Summary: In this study, the optical properties of Mn doped semi-magnetic semiconductor elliptical quantum dots under an external magnetic field were investigated. The spin separation of electron and hole became more pronounced as the magnetic field increased, resulting in an increase and leftward shift of the absorption maximum. The spin splitting of electron and hole decreased with increasing temperature, leading to a decrease and rightward shift of the absorption maximum. Additionally, increased Mn concentration enhanced the spin splitting and caused an increase and leftward shift of the absorption maximum.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2023)
Article
Polymer Science
M. Yehia, Sh Labib, S. M. Ismail
Summary: Zn1-xCdxO (x = 0, 0.001, 0.01, 0.1) nanoparticles were prepared using polyol technique and characterized using various methods. The samples showed high purity and crystallized in a specific phase, with one sample exhibiting room temperature ferromagnetism while others displayed diamagnetic behavior. ESR measurements indicated the presence of different types of defects in the prepared samples.
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2021)
Article
Physics, Multidisciplinary
Chun-Lei Li, Jun Zheng, Xiao-Ming Wang, Yan Xu
Summary: This study investigates spin polarized transport properties in diluted magnetic semiconductor/semiconductor superlattice structures using the single electron effective mass approximation theory and the transfer-matrix method. The effects of light and magnetic fields on spin polarized transport and tunneling time are discussed. The results show that adjusting the magnetic and light fields can manipulate the spin-dependent transmission and the resonant-transmission-band of spin-dependent electrons. Light and magnetic fields can also significantly change the spin polarization of electrons. Additionally, the tunneling time of spin-up and spin-down electrons is studied, showing that the tunneling time depends on the electron's spin.
ACTA PHYSICA SINICA
(2023)
Article
Materials Science, Ceramics
Meijun Chen, Youchen Liu, Wei Zhou, Ping Wu
Summary: TiO2/CuO composites were prepared via a two-step method. The results of X-ray diffraction and transmission electron microscopy showed the substitution of Cu2+ for Ti4+ in the TiO2 lattice and the presence of Cu2+ species in the CuO lattice. Scanning electron microscopy revealed a morphology change in the sample and the formation of an interface between TiO2 and CuO. X-ray photoelectron spectroscopy and Raman spectra indicated the presence of oxygen vacancies (VO) and Ti3+ in the lattice. UV-vis absorption spectra demonstrated a widening of the absorption range and a decrease in the bandgap with increasing amount of CuO. Additionally, the composites exhibited room-temperature ferromagnetism (RTFM) related to VO and the exchange interaction between Ti3+ and Ti4+ at the interface.
CERAMICS INTERNATIONAL
(2023)
Article
Physics, Condensed Matter
I. Krainov, V. F. Sapega, G. S. Dimitriev, N. S. Averkiev
Summary: This paper investigates the magnetic impurities spin relaxation in diluted magnetic semiconductors, finding that the main channel of spin relaxation is through mobile carriers. Experimental results show that with an increase in temperature, the spin relaxation rate of ferromagnetic samples grows, approaching that measured in paramagnetic samples.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2021)
Article
Materials Science, Multidisciplinary
S. M. Abo-Naf, S. Ibrahim, M. A. Marzouk
Summary: The citrate sol-gel method was used for the synthesis of Zn1-x-yMnxCryO nanomaterials, and their properties were investigated for potential applications in DMS nanoparticles. Results showed that Mn and Cr doping induced changes in optical and magnetic properties of the synthesized nanoparticles.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Review
Physics, Condensed Matter
Malgorzata Gorska, Lukasz Kilanski, Andrzej Lusakowski
Summary: This paper describes diluted magnetic semiconductors (DMS) and their magnetic properties, comparing the differences and similarities in magnetic properties among different types of DMS. The influence of material's crystalline and electronic structure on its magnetic properties is examined, and experimental methods for determining exchange parameters are introduced. The development of material technology is also traced in the paper.
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
(2022)
Article
Chemistry, Inorganic & Nuclear
Denis P. Opra, Alexander A. Sokolov, Sergey L. Sinebryukhov, Ivan A. Tkachenko, Albert M. Ziatdinov, Sergey Gnedenkov
Summary: In this study, gray-colored oxygen-deficient TiO2-delta(B) nanobelts were successfully synthesized, and the TiO2(B) with anionic defects exhibited enhanced absorption intensity and ferromagnetism. Vacuum annealing had minimal impact on the magnetic properties of TiO2(B).
Article
Engineering, Electrical & Electronic
L. Chouhan, R. Narzary, B. Dey, Shantanu Kumar Panda, Murli Kumar Manglam, L. Roy, R. Brahma, A. Mondal, M. Kar, S. Ravi, S. K. Srivastava
Summary: Recent studies have focused on d(0) ferromagnetic oxide materials as potential candidates for spintronics applications. Investigating Ag-doped TiO2 compounds revealed polycrystalline rutile form with tetragonal-type structure, showing ferromagnetism and p-type conductivity with widening band gap and transmittance in the 20-30% range upon Ag doping.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Materials Science, Multidisciplinary
Sourav Chakraborty, Sandip Halder, Kalpataru Pradhan
Summary: We investigate itinerant ferromagnetism using a diluted spin-fermion model derived from a repulsive Hubbard model. The model describes itinerant fermions coupled antiferromagnetically to spin auxiliary fields in a three-dimensional simple cubic lattice. We assign a positive finite value to the Hubbard on-site potential at a fraction of sites to mimic magnetic impurities. By considering positional disorder of the auxiliary fields, our results show that the carrier spins' ferromagnetic transition temperature exhibits an optimization behavior with the carrier density, similar to experimental observations in diluted magnetic semiconductors. The system is found to be a half-metallic ferromagnet based on the calculated spin-polarized resistivities and density of states. Overall, our results provide significant insights into the understanding of ferromagnetism in diluted magnetic semiconductors.
Article
Chemistry, Physical
Endre-Zsolt Kedves, Eniko Bardos, Alpar Ravasz, Zsejke-Reka Toth, Szilvia Mihalydeakpal, Zoltan Kovacs, Zsolt Pap, Lucian Baia
Summary: This study compared the photocatalytic activities of active photocatalysts, including AgBr, ZnO, BiOI, and Cu2O, in the presence of a-MoO3. The results showed that a-MoO3 strongly inhibited the photocatalytic activity of TiO2, BiOI, Cu2O, and ZnO, but had no effect on AgBr. Therefore, a-MoO3 could be an effective inhibitor for evaluating newly explored photocatalysts.
Article
Physics, Applied
A. M. Babanli, Vepa Sabyrov
Summary: This study investigates the optical properties of diluted magnetic semiconductor cylindrical quantum dots caused by interband transitions. The behavior of the quantum dots is influenced by temperature, magnetic field, and structural parameters. Changes in temperature and magnetic field affect the absorption maximum and energy shift. Additionally, the absorption threshold frequency varies linearly at high temperatures and nonlinearly at low temperatures.
LOW TEMPERATURE PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Byung Il Yoo, Nahyun Lee, Bipin Lamichhane, Joonho Bang, Hyun Yong Song, Byung Cheol Park, Kyu Hyoung Lee, Seong-Gon Kim, Sung Wng Kim
Summary: This study investigates the electronic and magnetic properties of quasi-2D layer-structured I-Mn-V compounds and analyzes their correlation with structural parameters. The study reveals that the variation in the bonding angle between V-Mn-V affects the orbital hybridization and the anisotropic semiconducting properties of Mn and V. The study also finds anisotropy in the magnetic properties.
ADVANCED MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
S. S. Aplesnin, F. V. Zelenov, S. V. Semenov, O. A. Bayukov
Summary: The magnetic properties and Mo & BULL;ssbauer spectra of the Y1.8Bi1.2Fe3.5Ga1.5O12 compound were studied. The temperature dependence of the saturation magnetization, hysteresis, and coercive field stability in the magnetically ordered state were found to be linear. The distribution of iron ions and the concentration of paramagnetic iron ions were determined using Mo & BULL;ssbauer measurements. Two critical temperatures - the sublattice magnetization compensation temperature and the ferrimagnet-paramagnet transition temperature - were established. The disappearance of the phonon mode near the magnetic transition was observed. The experimental data were interpreted using the spin-lattice interaction model.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2023)
Article
Engineering, Environmental
Sebastien R. David, Agathe Jaouen, Dris Ihiawakrim, Valerie A. Geoffroy
Summary: This study investigated the role of siderophore-producing Pseudomonas in the biodeterioration of asbestos cement, finding that various pyoverdines were efficient in extracting iron from the waste. The research suggests a potential bioremediation process for avoiding disposal of such waste in landfills.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Helene Pasco, Laurence de Viguerie, Marco Faustini, Cristina Coelho-Diogo, Ovidiu Ersen, Christel Gervais, Frederic Gobeaux, Dris Ihiawakrim, Maguy Jaber, Philippe Walter, Clement Sanchez
Summary: British 19th century painters developed gelled systems known as megilps or gumtions, which consisted of common paint materials like linseed oil, lead acetate, and mastic resin. These allowed painters to enhance their painting properties and achieve unprecedented effects in their work.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Kripa Joseph, Soh Kushida, Emanuel Smarsly, Dris Ihiawakrim, Anoop Thomas, Gian Lorenzo Paravicini-Bagliani, Kalaivanan Nagarajan, Robrecht Vergauwe, Eloise Devaux, Ovidiu Ersen, Uwe H. F. Bunz, Thomas W. Ebbesen
Summary: The research found that vibrational strong coupling can significantly change the molecular supermolecular morphology of self-assembly, affect self-assembly dynamics, and depend on solvent vibration. These findings provide a new tool for controlling supramolecular assemblies, with broad implications for molecular and material science.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Othmane Darouich, Walid Baaziz, Dris Ihiawakrim, Charles Hirlimann, Daniele Spehner, Patrick Schultz, Hedwige Poncet, Virgile Rouchon, Sana Labidi, Corinne Petit, Pierre Levitz, Ovidiu Ersen
Summary: A comprehensive analysis using a multiscale approach revealed the hierarchical porosity in Coscinodiscus sp. diatom structures. Different pore sizes, shapes, and connectivities were identified, and evidence of nanometric porosity in the siliceous diatom frustules was provided.
NANOSCALE ADVANCES
(2022)
Article
Chemistry, Multidisciplinary
Geoffrey Cotin, Benoit Heinrich, Francis Perton, Celine Kiefer, Gregory Francius, Damien Mertz, Barbara Freis, Benoit Pichon, Jean-Marc Strub, Sarah Cianferani, Nathalie Ortiz Pena, Dris Ihiawakrim, David Portehault, Ovidiu Ersen, Amir Khammari, Matthieu Picher, Florian Banhart, Clement Sanchez, Sylvie Begin-Colin
Summary: Thermal decomposition is an efficient method for synthesizing nanosized metal oxides with controlled structures and properties. In the synthesis of iron oxide nanoparticles, the nucleation mechanism has been found to occur within vesicle-like nanoreactors, providing a new understanding of the synthesis process. This discovery paves the way for better control over the synthesis and properties of metal oxide nanoparticles.
Article
Chemistry, Multidisciplinary
Gisele M. L. Dalmonico, Dris Ihiawakrim, Nathaly Ortiz, Amaro Gomes Barreto, Caio Felippe Curitiba Marcellos, Marcos Farina, Ovidiu Ersen, Andre L. Rossi
Summary: Studies have shown that the crystallization of calcium phosphate in aqueous media occurs in steps rather than directly, and nonclassical crystallization is still debated. The new in situ TEM technique allows for real-time observation of the crystallization process.
CRYSTAL GROWTH & DESIGN
(2022)
Article
Chemistry, Multidisciplinary
Vinavadini Ramnarain, Tristan Georges, Nathaly Ortiz Pena, Dris Ihiawakrim, Mariana Longuinho, Herve Bulou, Christel Gervais, Clement Sanchez, Thierry Azais, Ovidiu Ersen
Summary: This study utilizes liquid phase-transmission electron microscopy to observe the early stages of CaCO3 formation, finding that L-aspartic acid promotes the formation of prenucleation clusters which later transform into amorphous nanoparticles. By combining advanced analytical techniques and numerical modeling, the underlying mechanism of L-aspartic acid's promotion of prenucleation clusters is explained.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Biotechnology & Applied Microbiology
Marion Lemare, Helene Puja, Sebastien R. David, Sebastien Mathieu, Dris Ihiawakrim, Valerie A. Geoffroy, Coraline Rigouin
Summary: Bacteria have developed mechanisms, such as siderophore production, to extract iron from the environment. In this study, we engineered a strain of Pseudomonas aeruginosa to increase pyoverdine production and enhance the dissolution of iron and magnesium from asbestos waste. This innovative mineral weathering process can help remove toxic iron from asbestos fibers and potentially provide an eco-friendly method for managing asbestos waste.
MICROBIAL BIOTECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Mattia Biesuz, Gino Mariotto, Michele Cassetta, Ovidiu Ersen, Dris Ihiawakrim, Petr Hausild, Paolo Giopato, Alessandro Martucci, Mauro Bortolotti, Vincenzo M. Sglavo, Gian D. Soraru
Summary: The application of a DC current enables fast Ag+ -> Na+ ion exchange in SLS glass. The effects of processing parameters, electric current, and treating time on both air and tin sides of SLS float glass are studied, revealing non-Fickian diffusion. The ion exchange kinetics are similar on both sides, but the structure/microstructure is vastly different. Clear silver nanoclustering occurs on the tin side, resulting in metallic particles near the surface. The formation of nanoparticles involves a deep structural reorganization.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Engineering, Environmental
Pablo Jimenez-Calvo, Mario J. Munoz-Batista, Mark Isaacs, Vinavadini Ramnarain, Dris Ihiawakrim, Xiaoyan Li, Miguel Angel Munoz-Marquez, Gilberto Teobaldi, Mathieu Kociak, Erwan Paineau
Summary: The configuration and geometry of chemical reactors significantly impact performance evaluation and the development of thermodynamic and kinetic model reactions for photocatalytic materials. Lack of accurate transport profiles for mass, heat, and photons in photochemical reactors hinders comparison between experiments and standardization. This study proposes a compact stainless-steel photoreactor for hydrogen photoproduction and uses TiO2 Schottky junctions with Pd, Pt, or Au nanoparticles to validate the reactor's operation. Results show improved profiles and increased quantum yields compared to previous studies.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Charles Sidhoum, Doru Constantin, Dris Ihiawakrim, Marc Lenertz, Thomas Bizien, Clement Sanchez, Ovidiu Ersen
Summary: Lead halide perovskites (LHPs), particularly methylammonium lead iodide (MAPI) perovskite, have unique physical properties that make them promising candidates for optoelectronic devices. In this study, we used advanced in situ techniques to gain new insights into the synthesis pathway of MAPI perovskites. Through real-time monitoring and analysis, we observed the structural evolution and crystal fragmentation during the nucleation and growth processes of MAPI perovskites, providing unprecedented evidence for a better understanding of the synthesis and properties of these emerging materials.
CHEMISTRY OF MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Kevin Sartori, Dris Ihiawakrim, Christophe Lefevre, Solenn Reguer, Cristian Mocuta, Sylvie Begin-Colin, Fadi Choueikani, Benoit P. Pichon
Summary: Thanks to important advances in synthesis techniques, a wide collection of bimagnetic core-shell nanoparticles with tunable properties was reported in the literature. The chemical composition and crystal structure of the core/shell interface in nanoparticles are crucial parameters to modulate efficiently their magnetic properties. This study presents a solvent mediated thermal annealing method to investigate the structure and chemical composition changes of Fe3-delta O4 @ CoO nanoparticles. The results show that thermal annealing leads to the partial solubilization of the CoO shell and the formation of a thicker intermediate Co-doped ferrite layer at the spinel/wustite interface.
MATERIALS ADVANCES
(2022)
Article
Chemistry, Physical
Emilia Soszka, Marcin Jedrzejczyk, Christophe Lefevre, Dris Ihiawakrim, Nicolas Keller, Agnieszka M. Ruppert
Summary: This study reports on the efficient synthesis of 2-methyltetrahydrofuran using earth-abundant non-noble metal cobalt catalysts supported on titanium dioxide. The size of cobalt particles and metal-support interaction were found to significantly influence the catalyst's performance, in addition to the catalyst acidity.
CATALYSIS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Nathaly Ortiz Pena, Dris Ihiawakrim, Sorina Cretu, Geoffrey Cotin, Celine Kiefer, Sylvie Begin-Colin, Clement Sanchez, David Portehault, Ovidiu Ersen
Summary: This study investigates the formation process of iron oxide nanoparticles using IL-TEM, and discovers the spontaneous formation of vesicular assemblies made of iron polycation-based precursors sandwiched between stearate layers. By controlling the electron dose, the crystal growth and morphology of the resulting nanoparticles can be controlled. This research sheds new light on the formation process of metal oxide nanoparticles and offers new ways for the synthesis of inorganic colloidal systems with tunable shape and size.
Article
Chemistry, Multidisciplinary
Mariana M. Longuinho, Vinavadini Ramnarain, Nathaly Ortiz Pena, Dris Ihiawakrim, Ruben Soria-Martinez, Marcos Farina, Ovidiu Ersen, Andre L. Rossi
Summary: In this study, in situ transmission electron microscopy was used to investigate the effects of l-Asp on calcium carbonate nucleation and growth in liquid environments. It was found that l-Asp interacts strongly with calcium ions, limiting crystal growth and reducing the formation rate.
Article
Materials Science, Multidisciplinary
Muhammad Haris Azhar, Tayyaba Noor, Naseem Iqbal, Neelam Zaman, Sarah Farrukh
Summary: This study uses a novel adsorbent Metal Organic Framework (MOF) and its composites to adsorb CO2. Experiment results show that 5 wt% g-C3N4/Ni-BDC MOF exhibits the highest adsorption capacity.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Ayumu Nodera, Shinya Aikawa
Summary: In this study, a CO2 sensor capable of low-temperature operation was fabricated using an open-channel-type thin-film transistor structure with a polar surface of an oxide semiconductor. The sensor showed a sensitivity 2.9 times greater than that under an inert N2 atmosphere at an operating temperature of only 150 degrees C. The results suggest that TFTs fabricated with polar surfaces of oxide semiconductors are useful for gas-sensing applications.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Bindhyabasinee Mishra, Jyotirmayee Nanda, Subhra S. Brahma, K. J. Sankaran, R. Sakthivel, S. Ghadei, S. Suman
Summary: In this study, a series of polycrystalline mixed spinel ferrites were synthesized and characterized. The Mg0.5Zn0.5La0.05Fe1.95O4 ferrite showed the best response and recovery time, indicating its potential as a material for LPG sensing.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2024)
Review
Materials Science, Multidisciplinary
Rajashree Panda, Mitrabhanu Behera, A. Arun Kumar, Dhananjay Joshi
Summary: Rare earth doped aluminate-based phosphors are preferred over sulfide-based phosphors. The unique luminescence features of lanthanide-based materials are being utilized for multidisciplinary research and inventive applications. The past years have seen an increase in research interest in aluminate-based phosphors, leading to improvements in their long-lasting phosphorescence and phosphorescence efficiencies. Combustion synthesis route is an efficient technique for preparing nano-phosphor due to its simplicity and cost-effectiveness.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2024)
Review
Materials Science, Multidisciplinary
Younes Zohrabi
Summary: Water is essential for the survival of living organisms, but industrialization has led to contamination of water sources with heavy metals and harmful pollutants. Magnetic nano ferrites have shown potential in effectively removing heavy metals from water due to their magnetic characteristics, high surface area, surface active sites, chemical stability, and ease of modification. This review explores recent literature on the synthesis and application of magnetic ferrites for removing heavy metals from water, aiming to provide a comprehensive understanding for future research.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Baolin Liu, Chenxin Xie, Guanglei Qian, Lishan Zhou, Chenglei Zhang, Lingzhi Zhu
Summary: In this study, a self-cleaning CuO-PdO-Pd/Ti membrane has been developed for the removal of small-sized pollutants. The membrane exhibited superior removal ability and permeability compared to conventional membranes, and maintained high efficiency even after repeated tests. The CuO-PdO-Pd/Ti membrane also showed excellent removal efficiency when treating real wastewater, indicating its high potential for practical applications.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Debabrata Panda, Akhilesh Kumar Sahu, Krunal M. Gangawane
Summary: A variety of hierarchical nanoporous silica aerogels were synthesized from well-dispersed silica sols, exhibiting diversified particle distributions and excellent thermal properties. The silica aerogels showed low thermal conductivity and high-temperature resilience. Surface modification and dilution of silica sols further improved the thermal resistance of the aerogels. The resilient skeleton structure developed from tiny particles effectively restricted heat dissipation and maintained the porous network at high temperatures.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Hardy Shuwanto, Hairus Abdullah, Young Ku, Jenni Lie
Summary: In this study, a defective system of V-doped Fe2O3 with Pt as a cocatalyst was used for photoelectrochemical water oxidation. The defects in the VFPt-2.5 photoanode were characterized by XPS and EPR analyses. The SEM and TEM analyses revealed that the electrodeposited V-doped alpha-Fe2O3 had a nanosized morphology with an average diameter of 12 nm and a thickness of 300 nm. Under light irradiation, the VFPt-2.5 photoanode achieved a remarkable onset potential and photocurrent density. The stability test showed that Pt helped overcome the charge recombination caused by surface states.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Reza Gholipur, Hemin Mohammed Ali Khalifa, Khatereh Afrouzeh
Summary: Developing doped cathode materials is crucial for achieving low cost and high-performance energy storage. LiMn1.977(Ce, Cu, Ti, CeCuTi)0.023O4 nanoparticles show unmatched high structural stability, capacity, and safety during charge/discharge cycles. Ti-doped LiMn2O4 cathode calcined at 700 degrees C demonstrates the highest capacity and retention when multi-walled carbon nanotubes are added. The presence of titanium increases the porosity for reversible lithium storage and the dielectric constant.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
T. Amutha, M. Rameshbabu, S. Sasi Florence, G. Ramalingam, S. Muthupandi, K. Prabha
Summary: This research provides an overview of the structural analysis and magnetic characteristics of dilute magnetic semiconductor oxides (DMSOs) based on binary metal oxide nanomaterials with different ferromagnetic or paramagnetic dopants. The coprecipitation method was used to create nanoparticle samples, and the results showed certain ferromagnetic behavior and increased magnetic properties.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Preeti Kumari, Vipul Srivastava, Ramesh Sharma, Hamid Ullah
Summary: In this study, the rare-earth ferrites perovskite RFeO3 (R = Pr, Nd) were investigated for their various properties including structural, electronic, magnetic, optical, thermodynamic, and thermoelectric behavior. The study found that these materials exhibit half-metallic behavior under certain conditions, and their optical and thermoelectric properties were evaluated, making them potential candidates for spintronic devices and UV absorbers.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Shuting Yuan, Tianchi Wang, Tian Feng, Jian Kong
Summary: In this study, Fe/Fe3O4/C hollow electromagnetic wave absorbers were prepared using hollow ceiba fibers as templates. The proposed hollow structure could reflect and scatter electromagnetic waves multiple times, leading to significant energy consumption. The impedance matching of magnetic materials and biochar enabled the joint absorption of magnetic and dielectric losses to absorb electromagnetic waves.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
G. R. Mamatha, B. R. Radha Krushna, J. Malleshappa, S. C. Sharma, Satish Kumar, C. Krithika, Nandini Robin Nadar, Dileep Francis, K. Manjunatha, Sheng Yun Wu, H. Nagabhushana
Summary: Nanostructured SrAl2O4:Tb3+/M (M = Li+, Na+, K+, Ca2+, Bi3+) green nanophosphors were synthesized using an environmentally friendly combustion process and Areca nut as a sustainable fuel source. The introduction of alkali metal co-dopants optimized the luminescent intensity and showed potential for data security applications.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Tomoyuki Tachibana, Akihiro Yabuki
Summary: A one-step thermal-reduction method was used to synthesize copper sulfide films with different compositions and pillar-like structures, through adjusting the sulfur ratio and incorporating excess sulfur during the synthesis process.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Manal A. Mahdy, I. K. El Zawawi, Manal Mounir Ahmad
Summary: Pure PVA and its nanocomposites with CuO and/or CoFe2O4 films were prepared and characterized. The optical properties of the films can be modulated by controlling the percentage of CuO and/or CoFe2O4. The nanocomposites exhibit good ferromagnetic behavior, making the prepared films potentially useful in antenna system miniaturization and flexible magneto-electronic applications.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2024)
