Article
Chemistry, Physical
Vasyl Mykhailovych, Andrii Kanak, Stefana Cojocaru, Elena-Daniela Chitoiu-Arsene, Mircea Nicolae Palamaru, Alexandra-Raluca Iordan, Oleksandra Korovyanko, Andrei Diaconu, Viorela Gabriela Ciobanu, Gabriel Caruntu, Oleh Lushchak, Petro Fochuk, Yuriy Khalavka, Aurelian Rotaru
Summary: In this study, spinel-type MgCr2O4 nanoparticles were synthesized using a sol-gel auto-combustion method with fructose, tartaric acid, and hexamethylenetetramine as chelating/fuel agents. The formation of impurity-free MgCr2O4 nanostructures was optimal at temperatures ranging from 500 to 750 degrees C. Characterization techniques such as FTIR, UV-VIS spectrophotometry, XRD, EDX, and FE-SEM were used to study the properties of the synthesized nanoparticles, revealing the importance of the chelating/fuel agent nature and energy release during auto-combustion on the final properties of MgCr2O4 nanoparticles.
Article
Thermodynamics
Josue da Silva Buriti, Maria Eduarda Vasconcelos Barret, Francivandi Coelho Barbosa, Bruna Michele Arruda de Brito Buriti, Jose William de Lima Souza, Hermano de Vasconcelos Pina, Patricia de Luna Rodrigues, Marcus Vinicius Lia Fook
Summary: This study synthesized pure and silver-doped bioglasses using the sol-gel method, developed chitosan/45S5-Ag biocomposites, and evaluated their performance. The silver-doped bioglasses showed enhanced antibacterial activity and biodegradability without cytotoxicity, making them suitable for tissue regeneration.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Materials Science, Ceramics
L. E. De Leon Prado, D. A. Cortes Hernandez, J. C. Escobedo Bocardo, G. F. Hurtado Lopez
Summary: In this study, magnetic nanoparticles with mixed ferrites were synthesized via the sol-gel method and their physicochemical properties were evaluated under different heat treatment conditions. The obtained nanosized magnetic ferrites showed a single crystalline phase, close to the superparamagnetic regime, and exhibited heating ability under the application of a magnetic field.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Ritesh Verma, Ankush Chauhan, Neha, Khalid Mujasam Batoo, Rajesh Kumar, Muhammad Hadhi, Emad H. Raslan
Summary: This study investigates the effect of annealing temperature on the structural, morphological, and optical properties of BiFeO3 nanoparticles synthesized through sol-gel auto-combustion method. X-ray diffraction confirmed a rhombohedral structure with a decreasing secondary phase as temperature increases. Raman analysis showed a unique peak in BFO3.
CERAMICS INTERNATIONAL
(2021)
Article
Environmental Sciences
Ashwini S. Varpe, Mrinalini D. Deshpande, Dipak R. Tope, Ashok V. Borhade
Summary: CdFe2O4/Al2O3 magnetic nanocomposite photocatalyst is synthesized by sol-gel auto-combustion method, and its role as a photocatalyst is studied. The influence of Al2O3 concentration on the photocatalytic property is investigated. The 10% composite sample shows superior properties compared to other concentrations and bare CdFe2O4 nanoparticles. The degradation rate of xylenol orange dye reaches 92.29% after 30 minutes of photocatalytic reaction.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Physics, Condensed Matter
Asif Hussain, Muhammad Khalid, Ali Dad Chandio, Muhammad Yasin, Nasir Abbas, M. G. B. Ashiq, Hind Albalawi, Kiran Naz, Muhammad Younas, Beenish Masud
Summary: Neodymium doped Ni-Mn based spinel ferrites nanomaterials were synthesized by sol gel auto-combustion method. The samples were annealed and characterized by XRD, SEM, and FTIR. The electrical and magnetic properties of these materials were also studied.
PHYSICA B-CONDENSED MATTER
(2023)
Article
Materials Science, Multidisciplinary
Md Abdullah-Al-Mamun, M. S. Sarker, M. R. Hasan, M. M. Haque, F. A. Khan, M. M. Rahman, M. K. R. Khan
Summary: The study found that the Er content has a significant impact on the crystalline structure and magnetic properties of CoFe2-xErxO4 nanoparticles, optimizing material performance by reducing crystallite size and increasing coercivity.
RESULTS IN PHYSICS
(2021)
Article
Chemistry, Applied
Martin Timusk, Triin Kangur, Janis Locs, Andris Sutka, Martin Jarvekulg
Summary: The temperature-dependent behavior of alcohol surface tension and the nanoporous nature of sol-gel derived alcogels provide a quick and simple pathway to obtain low-density silica materials without the need for specialized drying conditions. Granular silica with markedly lower density can be produced through simple combustion of sol-gel derived alcogels despite high-temperature annealing.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Environmental Sciences
Pinki Kotwal, Rohit Jasrotia, Jyoti Prakash, Jahangeer Ahmed, Ankit Verma, Ritesh Verma, Abhishek Kandwal, Sachin Kumar Godara, Swati Kumari, Pradip K. Maji, Mohd Fazil, Tokeer Ahmad, Mohaseen S. Tamboli, Naresh Sharma, Rajesh Kumar
Summary: Copper and dysprosium doped NiFe2O4 magnetic nanomaterials were prepared and investigated for the photodegradation of methylene blue pollutant, electrocatalytic water splitting, and antibacterial activities. The results showed that the doping of copper and dysprosium can increase the saturation magnetization and decrease the optical band gap, leading to enhanced photocatalytic degradation efficiency and excellent electrocatalytic properties. The produced magnetic nanomaterials also exhibited significant antibacterial activity against gram-positive bacteria.
ENVIRONMENTAL RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Alize Gaumet, Francesco Caddeo, Danilo Loche, Anna Corrias, Maria F. Casula, Andrea Falqui, Alberto Casu
Summary: CuFe2O4-SiO2 nanocomposites were prepared using sol-gel techniques, with copper ferrite nanocrystals evenly distributed within a porous silica matrix after thermal treatment. DC magnetometry was used to study the magnetic properties of these nanocomposites, indicating that the loading of copper ferrite and porosity characteristics can affect the magnetic features.
Article
Chemistry, Physical
Kumud Choudhary, Richa Saini, Gaurav K. Upadhyay, L. P. Purohit
Summary: Yttrium doped ZnO:CdO nanocomposite thin films were prepared and studied for CO2 gas sensing. The YZC2 sample showed promising gas sensing performance and suitable for CO2 gas sensing application. Characterization of the films was conducted using XRD, FE-SEM, and UV-Vis spectroscopy to analyze their structural, surface, and optical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Zahida Batool, Mahreen Akhtar, Azhar Ul Hasnain, Saeed Ahmad Buzdar, Hafeez Ullah, Aalia Nazir, Junaid Ishtiaq, Momna Rasheed
Summary: This study reports on the antibacterial properties of bismuth selenide prepared by cost-effective methods including sol-gel and hydrothermal methods. XRD, UV-Vis, and FTIR analyses showed that the synthesized samples have nanosized grain size and crystalline nature; UV-Vis analysis revealed the absorption region and energy bandgap of Bi2Se3 nanoparticles; FTIR spectrum displayed the vibrational stretching region corresponding to Bi and Se bonding.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Chemistry, Physical
C. Gomez-Polo, S. Larumbe, A. Gil, D. Munoz, L. Rodriguez Fernandez, L. Fernandez Barquin, A. Garcia-Prieto, M. L. Fdez-Gubieda, A. Muela
Summary: The study investigates the effects of Cr and N doping on the properties of TiO2 anatase nanoparticles, including adsorption capacity, photocatalytic performance, and antibacterial response. Doping with Cr and Cr/N enhances adsorption capacity and photocatalytic performance, with Cr-TiO2 nanoparticles exhibiting antibacterial activity under visible light. The differences in electrostatic charge and nanoparticle dispersion are suggested as the main reasons for the varied antibacterial response among the doped nanoparticles.
SURFACES AND INTERFACES
(2021)
Article
Materials Science, Ceramics
M. S. I. Sarker, Marufa Yeasmin, Md Abdullah Al-Mamun, S. Manjura Hoque, M. K. R. Khan
Summary: The structural and magnetic properties of Gd doped CoFe2O4 nanoparticles synthesized by sol-gel method have been studied, showing their potential applications in various fields.
CERAMICS INTERNATIONAL
(2022)
Review
Polymer Science
Juan Pablo Fernandez-Hernan, Belen Torres, Antonio Julio Lopez, Joaquin Rams
Summary: The increasing life expectancy necessitates the development of new biomaterials, and the sol-gel synthesis method shows great potential for improving the biological properties of different magnesium alloys as biomaterials. This method allows the generation of diverse biomaterials with various morphologies, making it valuable for biomedical applications.
Article
Chemistry, Applied
S. Akhtar, M. A. Almessiere, B. Unal, A. Demir Korkmaz, Y. Slimani, N. Tashkandi, A. Baykal, A. Ul-Hamid, A. Manikandan
Summary: Microspheres of Ni0.5Co0.5GaxFe2-xO4 (x≤1.0) spinel ferrites (NiCoGaFe-MSFs) and carbon spheres were synthesized via a hydrothermal technique. The microstructure of the microspheres was characterized using SEM, TEM, and XRD. The electrical and dielectric properties of NiCoGaFe-MSF were systematically studied at temperatures ranging from 20 to 120 degrees C (293.1 x 103 to 393.1 x 103) and frequencies up to 3.0 MHz. The results showed that the conductivity, dielectric properties, and impedance spectra of NiCoGaFe-MSFs were influenced by the Ga ion substitution ratios. The formation of semicircles in the impedance spectra was temperature-dependent, indicating a relaxation mechanism. The findings provide valuable insights for the design and application of spinel ferrite-based materials.
JOURNAL OF RARE EARTHS
(2023)
Article
Engineering, Electrical & Electronic
M. A. Almessiere, H. Erdemi, A. Sadaqat, Y. Slimani, A. Baykal, M. A. Gondal
Summary: Hard-soft CoFe2O4/Ni0.3CuxZnyFe2O4 (x, y <= 0.5) nanofibers were synthesized and the effect of co-substitution of Cu and Zn on the dielectric properties was investigated. Microstructure and morphology were studied using various techniques. The dielectric features were evaluated as a function of frequency and temperature, and the conductivity behavior showed dependence on temperature and frequency. The conduction mechanism was analyzed using Cole-Cole plots and Koop's model.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Physical
Sherwan M. Mahdi Ismail, Sabah M. Ahmed, Ahmed Fattah Abdulrahman, Munirah A. AlMessiere
Summary: Zinc oxide (ZnO) nanoparticles were synthesized using leaf extracts from the Pinus Brutia (PB) tree. The impact of PB tree extracts and different pH values on the characteristics of ZnO NPs was investigated. The study showed that PB leaf extracts had a strong absorption peak at 275.3 nm in the UV-Visible spectrum. The FESEM analysis revealed that pH values affected the morphology and size of the GS ZnO NPs. XRD data confirmed that the GS ZnO NPs had a hexagonal and wurtzite crystal structure. UV-Visible analysis showed significant absorption peaks for ZnO NPs made at different pH levels, with high absorption in the UV range. The band-gap energy measured was in the range of 2.6-2.724 eV. Based on the results, GS ZnO NPs produced at pH 8 showed good quality and improvement compared to other pH values.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Crystallography
Essia Hannachi, M. I. Sayyed, Suhairul Hashim, Karem Mahmoud, Yassine Slimani
Summary: This research aims to study the radiation-protecting characteristics of calcium titanate (CaTiO3) perovskite-based ceramic material. The ceramics were prepared using the solid-state reaction method and treated at different temperatures. XRD and FT-IR analysis revealed a CaTiO3 phase formation with an orthorhombic structure. The size of the crystallites increased with rising temperatures, and the relative density also showed an increase. Monte Carlo simulation was used to assess the impact of temperature on the radiation-protecting characteristics, showing a decrease in gamma-photons average track length and an increase in the linear attenuation coefficient with temperature rise.
Article
Materials Science, Multidisciplinary
S. Caliskan, M. A. Almessiere, A. Baykal, Y. Slimani
Summary: Using first principles calculations, this study elucidates the influence of Se dopants on the electronic structure, magnetic and optical characteristics of CoNiFe2O4 spinel ferrites. The results show that Se dopants replace O atoms in the supercell, affecting the electronic structure, magnetism, and optical properties. The findings suggest that the energy band gap decreases with increasing Se concentration, and depending on the site occupation, a half metallic characteristic can be achieved. The significant spin polarization and promising optical characteristics indicate that Se doped CNFO spinel ferrites are potential candidates for spin dependent applications and visible light photocatalysis.
COMPUTATIONAL MATERIALS SCIENCE
(2023)
Article
Chemistry, Inorganic & Nuclear
Y. Slimani, M. A. Almessiere, A. Baykal, S. E. Alsulaim, S. V. Trukhanov, D. S. Klygach, T. I. Zubar, M. G. Vakhitov, A. V. Trukhanov, R. Jermy, A. Ul-Hamid
Summary: The nanosized spinel ferrites (NSFs) of Co0.5Ni0.5ScxFe2-xO4 (x < 0.1), CoNiSc, were synthesized by sol-gel approach. The structural and phase formation were investigated using XRD, SEM, TEM, and HR-TEM, showing the formation of single-phase cubic spinel structure. The magnetic properties were strongly influenced by the introduction of Sc3+ ions. Microwave properties analysis revealed an increase in resonant frequency and amplitude with Sc substitution.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
S. Caliskan, M. A. Almessiere, A. Baykal, A. Demir Korkmaz, H. Gungunes, Z. Alsalem, Y. Slimani, E. Gokce Polat
Summary: Praseodymium ion (Pr3+) substituted Ni0.5Co0.5Fe2O4 nanospinel ferrites were synthesized via sonochemical route and showed a single cubic structure with a crystallite size of 9-11 nm. The morphology analysis revealed spherical particles. The magnetic study indicated an increase in superparamagnetic character with the addition of Pr3+ ions. The magnetic parameters showed dependence on cation distribution. The evaluation of Pr -> CoNi (x <= 0.10) NSFs received a score of 8 out of 10.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2023)
Article
Chemistry, Physical
Yassine Slimani, Munirah A. Almessiere, Mohamed J. S. Mohamed, Essia Hannachi, Serkan Caliskan, Sultan Akhtar, Abdulhadi Baykal, Mohammed A. Gondal
Summary: One of the major concerns globally is the presence of organic pollutants in wastewater and water resources, specifically Rhodamine B, which is highly persistent and toxic. Metal oxide semiconducting materials, such as TiO2, have been studied for their ability to remove organic pollutants. In this study, a series of Ce-Sm co-doped TiO2 nanoparticles were prepared and their photocatalytic activity was evaluated. It was found that all co-doped nanoparticles showed better photocatalytic activity than pristine TiO2, with the x = 0.50% sample demonstrating the highest degradation efficiency.
Article
Chemistry, Physical
S. Caliskan, M. A. Almessiere, A. Baykal, H. Gungunes, Y. Slimani, M. Hassan, D. S. Klygach, V. G. Kostishin, S. V. Trukhanov, A. V. Trukhanov, M. A. Gondal
Summary: The microstructure, morphology, magnetic features, hyperfine interactions, and oxidation state and chemical composition of Co-V co-substituted nano Sr-hexaferrite were investigated. The average crystallite size of the products was found to be in the range of 37-83 nm. The hexagonal morphology and chemical composition were observed and analyzed. The magnetization, coercivity, and microwave properties of the samples were also studied.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Engineering, Electrical & Electronic
J. V. Annie Vinsla, P. Annie Vinosha, S. Vijayalakshmi, Belina Xavier, A. Muthukrishnaraj, Manikandan Ayyar, Mohamed Henini
Summary: In this study, ammonia-free hexagonal boron nitride (h-BN) nanocrystals were successfully synthesized using a cost-effective hydrothermal technique. The synthesized nanocrystals, incorporated with varying weight% of cobalt (Co), exhibited enhanced performance in terms of structural, optical, elemental, functional, and morphological properties. The 10% Co-doped h-BN nanocrystals showed superior catalytic activity, leading to a remarkable 99.4% degradation of the Methylene Blue (MB) dye within just 9 minutes.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Yassine Slimani, Mouldi Zouaoui, Mohamed Ben Salem, Faten Ben Azzouz
Summary: In this study, the effects of adding PbO on the magnetic and superconducting properties of polycrystalline YBa2Cu3O7-d (Y123) were investigated. The combination of PbO with Y123 preserved the orthorhombic structure and enhanced the critical current density (Jc) under an external magnetic field. Excess conductivity analysis showed that PbO improved the superconducting parameters at 0 K.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Physical
Suresh Antony, Rushika J. Mehta, Soosaimanickam Maria Packiam, Joseph Devadass Balthazar, Melvin A. Daniel, Lakshminarayanan Srimathi Priya, Manikandan Ayyar
Summary: Morus sp. (mulberry) has gained importance in recent years due to its phytochemical composition and beneficial effects on human health. The leaves of the mulberry plant contain significant amounts of glycosylated flavonols and chlorogenic acid, making it a potential alternative therapy for various ailments. This study found that the ethanolic extract of mulberry leaves showed higher xanthine oxidase (XO) inhibition, indicating its potential as an anti-gout agent. The total polyphenol content of the extract was found to be associated with its anti-gout property.
ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS
(2023)
Article
Chemistry, Medicinal
Suriya Rehman, Balasamy Rabindran Jermy, Irfan A. Rather, Jamal S. M. Sabir, Suhailah S. Aljameel, Munirah A. Almessiere, Yassine Slimani, Firdos A. Khan, Abdulhadi Baykal
Summary: This study investigates the synthesis of praseodymium ion-substituted nano-spinel ferrites and their potential applications in cancer treatment and antifungal activities. The results show that the synthesized nanomaterial has a significant effect on cancer cell viability and exhibits antifungal properties. The findings suggest that these nanotherapeutics have promising prospects in the pharmaceutical field.
Article
Chemistry, Physical
Ghulam Abbas, Francisco C. Franco Jr, S. Janani, J. N. Cheerlin Mishma, A. Manikandan, S. Muthu, Christopher E. Anson
Summary: A new dimeric complex was synthesized through a one-pot reaction in MeOH and characterized by infrared spectroscopy, elemental analysis, and single crystal X-ray diffraction. The theoretical study and molecular docking analysis revealed the structural properties and potential biological activity of the complex.
JOURNAL OF MOLECULAR STRUCTURE
(2024)
Article
Chemistry, Physical
M. A. Almessiere, Y. Slimani, A. Baykal, H. Gungunes, S. Caliskan, M. G. Vakhitov, D. S. Klygach, T. I. Zubar, S. V. Trukhanov, A. V. Trukhanov, A. Ul-Hamid
Summary: ScIn-type Sr NHFs were synthesized via the sol-gel combustion method and characterized by various techniques. The study showed that doping can significantly alter the magnetic properties and microwave performance of the materials, which is important for the development of electronic coatings and electromagnetic compatibility.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Bibhutibhusan Nayak, S. Narayana Jammalamadaka
Summary: This article presents a method for remote detection of bovine serum albumin (BSA) using modified cantilever beam magnetometry (CBM). By combining a magnetostrictive Fe70Ga30 cantilever with optical detection technique, researchers were able to detect high concentrations of BSA remotely. The results of this study demonstrate the potential of this method in estimating the magnetostriction of thin films.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Yu Hao, R. E. Camley, Z. Celinski
Summary: Magnetic particles have various applications and their magnetic state is determined by their size and the strength of an applied magnetic field. Numerical simulations were performed to study the effect of an applied field on the critical size of single-domain magnetic particles, and the critical field at which a particle becomes single-domain was determined.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Nitesh Singh, Naresh Kumar, Dharohar Sahadot, Anil Annadi, Vidyadhar Singh, Murtaza Bohra
Summary: The unique magnetic properties of FM/AFM and hard-FM/soft-FM nanocomposite thin films have significant relevance for numerous applications. The composition and performance of different magnetic phases in the nanocomposite films can be significantly affected by the laser ablation conditions and annealing temperature.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Alya Ali Musaed, Samir Salem Al-Bawri, Khaled Aljaloud, Wazie M. Abdulkawi, Mohammad Tariqul Islam, Mandeep Jit Singh, Zaini Sakawi, Husam Hamid Ibrahim
Summary: This research presents a wideband tunable metamaterial for body-centric applications in the millimeter-wave frequency band. The proposed metamaterial has a wide operating frequency range and enhanced gain, making it suitable for improving the antenna performance in 5G wireless communication systems.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Binod K. Rai, Boris Maiorov, Krzysztof Gofryk, Patrick O'Rourke, Catherine Housley, Henry Ajo, Asraf Sawon, Arjun K. Pathak, Narayan Poudel, Qiang Zhang, Travis J. Williams, Matthias Frontzek
Summary: This manuscript reports on the structural and magnetic properties of NdCuGa3. The study confirmed the crystal structure and magnetic phase transition of NdCuGa3 using XRD, neutron diffraction, magnetization, and specific heat measurements. The neutron diffraction data further confirmed the antiferromagnetic phase of NdCuGa3.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Haonan Li, Cong Li, Hailiang Huang, Guodong Hao, Fei Wang
Summary: The electronic structure and ferroelectric-ferromagnetic coupling properties of Y-doped and vacancy-containing GaN-ZnO heterojunctions are systematically investigated. The magnetism in vacancy-containing systems is generated by the spin polarization of unpaired electrons induced by cationic vacancies, while in Y-doped systems, bound magnetic polarons are formed by the orbital hybridization of s-state and d-state electrons of Y-doped elements.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Muhammad Ijaz, Hafeez Ullah, Bandar Ali Al-Asbahi, Mati Ullah Khan, Zaheer Abbas, Sana Ullah Asif
Summary: M-type BaFe11.4-xAlxCo0.6O19 hexaferrites with Al3+ substitutions were synthesized using the co-precipitation method followed by Sonochemical process. The synthesized materials were characterized using XRD, FTIR, UV-vis spectroscopy, VSM, SEM, and LCR meter. The results showed that aluminum doping decreased the band gap and enhanced the magnetic and dielectric properties of the hexaferrites, making them suitable for various applications.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Oleg I. Utesov
Summary: The elementary excitations spectrum of anisotropic frustrated antiferromagnets in the fan phase is discussed. It is found that the low-energy part of the spectrum consists of a gapless phason branch with linear dispersion and a gapped optical branch corresponding to the fan structure amplitude oscillations. In the high-energy part of the spectrum, the excitations are similar to the magnons of the fully polarized phase.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Alexander Ya. Simonovskii, Alexander A. Yanovskii, Arthur R. Zakinyan
Summary: In this study, the departure frequency of vapor bubbles during boiling of ferrofluid in a horizontal magnetic field is experimentally investigated. Two methods, visual and inductive, are used to measure the frequency of bubble departure. The results show that the bubble departure frequency can decrease with increasing magnetic field strength and increase with increasing temperature of the heat-emitting surface. A linear stability analysis is conducted to analyze the influence of the magnetic field on the frequency of bubble formation during ferrofluid boiling.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Oleg Heczko, Michal Rames, Vit Kopecky, Petr Vertat, Michal Varga, Ladislav Straka
Summary: Heusler Ni-Mn-Ga alloys are multiferroic materials that exhibit magnetic shape memory (MSM) phenomena. By doping transition elements into Ni2MnGa alloys, the transformation temperatures can be modified and complex behaviors can be observed, such as the variation in saturation magnetization and the effects of elemental substitution on compound properties.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Carlos Ariel Samudio Perez, Ariel Flaig de Marchi
Summary: This study investigates the electronic and magnetic properties of the Full-Heusler Fe2MnAs alloy using first-principles calculations. The alloy may form spontaneously and exhibits a ferromagnetic order and high spin-polarization. It can be transformed into a half-metal by contracting the lattice constant. Additionally, certain defects contribute to the spin-polarization of the alloy, making it a fully half-metallic material.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Satish Geeri, Aditya Kolakoti, Prasadarao Bobbili
Summary: In this study, an electromagnetic wave-absorbing material was fabricated using a polymer composite material with fiber orientation and Multiwall Carbon Nanotubes as filler materials, along with a Perfect Electric Conducting material. The experiments demonstrated strong electromagnetic absorbing properties for the composites with PEC-coated and non-PEC-coated materials. Mechanical, thermal, and morphological analysis confirmed the similar trend in properties. CRITIC analysis helped identify the sequence order of sustaining properties for the fabricated composites.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Yankai Chen, Ruoxue Zhang, Yukai An
Summary: The piezoelectricity, valley character, and magnetic properties of 2H-VS2 monolayer were studied, revealing its potential applications in spintronics and valleytronics due to its bipolar magnetic semiconductor characteristics and superior physical properties.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Leonardo S. Lima
Summary: This study investigates the thermodynamic quantities, such as entropy, specific heat, and magnetic susceptibility, in the next-nearest-neighbors Heisenberg model on a honeycomb-kagome lattice. The linear spin-wave approach is applied to obtain the temperature-dependent behavior of these quantities. Additionally, the entanglement negativity, a quantifier of quantum entanglement, and the spin Hall conductivity are also studied. The results show that all the thermodynamic quantities, as well as the entanglement negativity and spin Hall conductivity, exhibit an increasing trend with temperature. Furthermore, it is found that all the analyzed quantities approach zero in the low-temperature limit, consistent with experimental observations.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Zhaoxing Wang, Maximilian Kai Reimann, Wang Chen, Yikun Zhang, Rainer Poettgen
Summary: The Mo2FeB2-type compounds RE2Ga2Mg (RE = Tm, Er, Ho) exhibit a large magnetocaloric effect, making them promising for cryogenic magnetic cooling applications.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
