Article
Chemistry, Physical
Hamed Eshgarf, Afshin Ahmadi Nadooshan, Afrasiab Raisi, Masoud Afrand
Summary: This paper experimentally evaluates the viscosity and thermal conductivity of Fe3O4/water nanofluid and proposes an estimation model using an artificial neural network. The results indicate that the volume fraction of nanoparticles and temperature have a direct relationship with the thermal conductivity coefficient of nanofluids, while the viscosity of the nanofluid decreases with the decrease in volume fraction of nanoparticles and increases with the decrease in temperature. The neural network shows fewer errors and higher accuracy in predicting the viscosity and thermal conductivity of nanofluids.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Thermodynamics
Zeyu Liu, Xin Wang, Hongtao Gao, Yuying Yan
Summary: This research aims to experimentally study the viscosity and thermal conductivity of water-based Fe3O4 nanofluid with highly disaggregated nanoparticles. The experimental results show that modified Fe3O4 nanofluid exhibits good viscosity and thermal conductivity when nanoparticles are highly disaggregated.
CASE STUDIES IN THERMAL ENGINEERING
(2022)
Article
Thermodynamics
Caio C. dos Santos, W. R. Viali, E. S. N. Viali, R. F. C. Marques, M. Jafelicci Junior
Summary: The study reported the synthesis of a new nanofluid based on magnetic nanoparticles with high colloidal stability. The functionalization of the nanoparticles on the surface increased the colloidal stability of the nanofluid. Characterization techniques confirmed the structural and stability properties of the nanoparticles.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Physics, Multidisciplinary
Faisal Shahzad, Wasim Jamshed, Tanveer Sajid, Kottakkaran Sooppy Nisar, Mohamed R. Eid
Summary: The study investigates the flow of a magnetite-H2O nanofluid between two rotating surfaces, considering its impact on skin friction and heat transport rate. The results show that the nanofluid has lower skin friction and higher heat transport rate compared to the base fluid, but rotation effect increases drag force and reduces heat transport rate.
COMMUNICATIONS IN THEORETICAL PHYSICS
(2021)
Article
Thermodynamics
Mohammadreza Niknejadi, Masoud Afrand, Arash Karimipour, Amin Shahsavar, Amir Homayoon Meghdadi Isfahani
Summary: Experimental research showed that the combined use of a twisted tube and a rotating magnetic field enhances the overall thermohydraulic features of water-magnetite nanofluid. The best overall thermohydraulic features were observed in the case of nanoadditive concentration at 2%, Reynolds number at 500, and twist pitch at 10 mm, with a rotating magnetic field resulting from clockwise rotation of the first magnet and counterclockwise rotation of the second magnet.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Chemistry, Physical
Yaghoub Mohammadfam, Saeed Zeinali Heris
Summary: This study investigates the impact of single, hybrid, and doped magnetic nanoparticles on the convective heat transfer capabilities of a water/ethylene glycol-based nanofluid under the influence of a magnetic field. The results show that the application of Fe3O4 and Fe3O4@MWCNT nanoparticles can increase the heat transfer capabilities of the nanofluid, while the application of MWCNT-Fe3O4 nanoparticles decreases the heat transfer capabilities. The performance index evaluation indicates that the use of nanofluids is effective, as all samples have a performance index greater than one.
SURFACES AND INTERFACES
(2023)
Article
Thermodynamics
Mohammadreza Niknejadi, Masoud Afrand, Arash Karimipour, Amin Shahsavar, Amir Homayoon Meghdadi Isfahani
Summary: This experimental investigation focuses on analyzing the laminar forced convection of water-based nanofluid (NF) containing Fe3O4 nanoparticles inside a twisted tube. The study examines the impacts of NF concentration, Reynolds number, and twist pitch on the average Nusselt number, friction factor, and overall hydrothermal performance indicator. The results show that the overall hydrothermal performance of NF in the twisted tube is superior to that of water in the plain tube, with the best performance occurring at NF concentration of 2% and twist pitch of 10 mm.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Energy & Fuels
M. Ziad Saghir, Mohammad M. Rahman
Summary: This article investigates experimentally and numerically the best heat transfer fluid for industrial applications. The results suggest that the 0.2%vol Fe3O4 nanofluid is the most suitable fluid for heat extraction.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Adina Stegarescu, Humberto Cabrera, Hanna Budasheva, Maria-Loredana Soran, Ildiko Lung, Francesca Limosani, Dorota Korte, Matteo Amati, Gheorghe Borodi, Irina Kacso, Ocsana Opris, Monica Dan, Stefano Bellucci
Summary: This study demonstrates the adsorption and photodegradation capabilities of modified multi-walled carbon nanotubes (MWCNTs) using tartrazine as a model pollutant. The optimal adsorption conditions are pH 4 for MWCNT-COOH/Fe3O4 and pH 3 for MWCNT-COOH/Fe3O4/NiO. The predominant degradation process is through photodegradation rather than adsorption.
Article
Engineering, Mechanical
Mohammad Hemmat Esfe, Seyed Majid Motallebi, Davood Toghraie, Hossein Hatami
Summary: The properties of nanofluid (NF) were investigated by adding SiO2 nanoparticles (NPs) to oil. The study found that the viscosity of NF is affected by solid volume fractions, temperature, and shear rates. A response surface methodology (RSM) model showed high accuracy in predicting the viscosity.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Geochemistry & Geophysics
Teng Lu, Faqiang Dang, Haitao Wang, Qingmin Zhao, Zhengxiao Xu
Summary: Nanoparticle-assisted microwave heating of heavy oil has the advantages of fast temperature rise and high thermal efficiency, reducing viscosity in a shorter time and effectively upgrading heavy oil. Nanoparticles improve the wave absorption and heating capacity of heavy oil, while the high temperature formed under microwave catalyzes the hydrocracking reaction between heavy components in the oil and the hydrogen donor, reducing viscosity and accelerating production.
Article
Thermodynamics
Mojgan Alishiri, Ali Akbari, Mohammad Hassan Saidi
Summary: This study optimized the concentrations of Fe3O4-MWCNTs/deionized water hybrid nanofluid using NSGA-II and tested its thermal performance in a pulsating heat pipe (PHP). The hybrid nanofluid containing 0.597 vol.% of Fe3O4 and 0.100 vol.% of MWCNTs showed the best thermal performance for the PHP. In comparison, the PHP charged with deionized water exhibited better start-up and lower thermal resistance.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Environmental Sciences
Rohinee M. Barai, Devesh Kumar, Atul Wankhade, Aamir R. Sayed, Anup A. Junankar
Summary: Nanofluids, with their remarkable thermal characteristics and potential applications, are expected to play a significant role in future thermal management systems.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Chemical
Fevzi Sahin, Omer Genc, Murat Gokcek, Andac Batur Colak
Summary: In this study, two different artificial neural networks were created to predict the thermal conductivity and zeta potential of Fe3O4/water nanofluid. The experimental data was used to propose a new mathematical correlation to calculate the thermal conductivity. The results showed that the artificial neural network models can accurately predict the thermal conductivity and zeta potential.
Article
Engineering, Chemical
Mohammad Hemmat Esfe, Davood Toghraie, Soheyl Alidoust
Summary: The thermophysical properties of MWCNT (50%)-ZnO (50%)/5W30 oil hybrid nanofluid were investigated. The behavior of the nanofluid was found to be non-Newtonian and pseudo-plastic. Increasing temperature had a special effect on reducing viscosity, which was attributed to the decrease in intermolecular forces.
Article
Environmental Sciences
Rasool Kalbasi, Bijan Samali, Masoud Afrand
Summary: Adding phase change materials (PCMs) into building envelopes is an effective way to reduce energy consumption and CO2 emissions. However, the presence of phase change in PCMs may not always lead to better energy savings. Installing PCMs near the uppermost layer can enhance energy-saving performance.
Article
Thermodynamics
Saeed Aghakhani, Ahmad Hajatzadeh Pordanjani, Masoud Afrand, Ayoob Khosravi Farsani, Nader Karimi, Mohsen Sharifpur
Summary: This paper presents a thermodynamic analysis of a mini circular heatsink, investigating different types of heatsinks and their performance. The results show that copper heatsinks have better cooling performance than aluminum heatsinks. Additionally, the study found that the addition of nanoparticles to the working fluid has a minimal impact on the thermodynamic performance of the system. Increasing the Reynolds number of the fluid flow reduces the exergy losses and improves the first and second law efficiencies.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2023)
Article
Chemistry, Physical
Zhihui Liu, Kejun Zhu, Azher M. Abed, Davood Toghraie
Summary: By simulating the reactions, the performance of catalysts in catalytic combustion can be improved, reducing the release of harmful gases. In this study, the catalytic combustion process of air-methane was simulated in a helical microchannel using Palladium (Pd) as the catalyst. The results showed that adding Pd catalyst improved the thermal performance of the simulated structure and increased the combustion efficiency. Increasing the initial pressure reduced the heat flux and thermal conductivity.
MOLECULAR CATALYSIS
(2023)
Article
Biology
Huanlei Wang, Azher M. Abed, Anahita Piranfar, Ghassan Fadhil Smaisim, Salema K. Hadrawi, Hussein Zekri, Davood Toghraie, Maboud Hekmatifar, As'ad Alizadeh
Summary: The impact of porosity and the number of cancer cells on the atomic behavior of cancer cells during hematogenous spread was investigated using molecular dynamics simulation. It was found that increasing porosity and increasing number of cancer cells led to changes in cancer cell structure and affected their stability. The gyration radius, interaction energy, and interaction force of the samples increased with increasing porosity, while decreased with increasing number of cancer cells. Decreasing the gyration radius can improve the strength and stability of the simulated samples.
COMPUTERS IN BIOLOGY AND MEDICINE
(2023)
Article
Engineering, Chemical
Yuan Zhou, Kang He, As'ad Alizadeh, Ahmed H. R. Alawadi, Hamid Maleki, Mahmoud Shamsborhan, Safaa Halool Mohammed, Ali Hussein Adhab, Davood Toghraie, Mohsin O. AL-Khafaji, Marwa M. Ismail
Summary: This study investigates the turbulent flow and heat transfer characteristics of a three-dimensional perforated finned heat sink using computational fluid dynamics (CFD) and response surface methodology (RSM). Results show that fins with large square perforations and small circular perforations achieve exceptional thermal performance. Compared to solid fins, square perforated fins reduce the total drag force by 20-40%, while circular perforated fins reduce the weight by 45-65%. The optimal condition is achieved by selecting circular perforations, a Reynolds number of 40,000, and a size of 1,946, resulting in a significant increase in heat transfer enhancement, drag reduction, and weight reduction compared to the base case (solid fin).
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2023)
Article
Engineering, Chemical
Meng Xia Wang, Behnam Almasi, Zainab Ali Bu Sinnah, Hasan Sh. Majdi, Farag M. A. Altalbawy, Davood Toghraie, Ibrahem Waleed, Rahman S. Zabibah, Usama S. Altimari, Yun Xiang Zhang
Summary: This study investigates the thermal conductivities of Ag-CuO-tungsten oxide/water ternary hybrid nanofluids with different mixing ratios, as well as other mono and hybrid nanofluids. The results show that increasing temperature and volume fraction of nanoparticles both increase the thermal conductivity. The Ag/water nanofluids with a volume fraction of 0.4% and temperature of 50℃ exhibit the highest thermal conductivity. A mathematical model is proposed to estimate the thermal conductivity of Ag-CuO-tungsten oxide/water ternary hybrid nanofluids.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2023)
Article
Materials Science, Multidisciplinary
Mohammad Mahdi Safaei, Reza Abedinzadeh, Amirsalar Khandan, Reza Barbaz-Isfahani, Davood Toghraie
Summary: The synergistic effects of graphene nanosheets (Gr) and copper oxide (CuO) nanoparticles and their hybrid incorporation on the mechanical and thermal properties of glass/epoxy composites were studied. Tensile strength, bending, and impact tests were performed to evaluate the mechanical properties, while XRD and SEM analysis were conducted to study the structure and morphology of the nanoparticles. The results showed that the addition of the combination of both nanoparticles increased the tensile properties by about 32% and the flexural properties by about 30%. SEM images indicated that a less diffuse distribution of copper nanoparticles resulted in better activity and dispersion of graphene nanosheets.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2023)
Article
Mechanics
Samaneh Soleymani, Parham Memarzadeh, Davood Toghraie
Summary: The present study investigates the sound transmission loss through the air-filled rectangular double-walled cross-ply fiber metal laminated (FML) nanoplates under different boundary conditions using nonlocal strain gradient theory and third-order shear deformation theory. The accuracy and precision of the developed solution are evaluated by comparing with existing data. The effects of various parameters on the sound transmission loss are examined, including boundary conditions, nonlocal and strain gradient parameters, lay-ups, incident angles, and acoustic cavity depth.
MECHANICS BASED DESIGN OF STRUCTURES AND MACHINES
(2023)
Article
Green & Sustainable Science & Technology
Mohammad Hemmat Esfe, Soheyl Alidust, Mohammad Hosseini, Davood Toghraie, Vahid Vaisi, Hossein Hatami
Summary: Qom province in Iran suffers from drought and water shortage. Recent efforts have improved access to safe drinking water for people in both cities and villages in the province. This research focuses on the performance evaluation of a double-slope solar still with a semi-circular basin in Qom province, specifically investigating the effects of different glass angles on freshwater production rate. The study found that an increase in slope angle leads to higher production rate but lower fresh water production per unit volume.
ENVIRONMENT DEVELOPMENT AND SUSTAINABILITY
(2023)
Article
Automation & Control Systems
Suqin Hua, Dheyaa J. Jasim, As 'ad Alizadeh, S. Ali Eftekhari, Navid Nasajpour-Esfahani, Mahmoud Shamsborhan, Davood Toghraie
Summary: This study investigates the impact of Solid Volume Fraction (SVF) and temperature on the dynamic viscosity of a hybrid antifreeze composed of MWCNTs and aluminum oxide. An Artificial Neural Network (ANN) is used to accurately predict viscosity based on input parameters. The findings show that Shear Rate (SR) and SVF have opposite effects on the viscosity of the nanofluid, while temperature has a smaller impact. The proposed ANN model outperforms other techniques in predicting viscosity. This research has important implications for the design of heat exchangers using nanofluids, particularly in portable devices.
ENGINEERING APPLICATIONS OF ARTIFICIAL INTELLIGENCE
(2023)
Article
Automation & Control Systems
Xiaofei Cheng, Sara Hakem Al-Khafaji, Mohammad Hashemian, Mariem Ahmed, S. Ali Eftekhari, Ali Ihsan Alanssari, Nabaa Muhammad Diaa, Manal Morad Karim, Davood Toghraie, Ahmed Hussien Alawadi
Summary: In this study, the natural frequency of a clamped-clamped functionally graded porous (FGP) nanobeam is predicted by considering different material distribution patterns in the thickness direction. The governing equations of the nanobeam are derived based on third-order shear deformation beam theory, nonlocal strain gradient theory (NSGT), and surface effects. Artificial neural network (ANN) is employed to analyze the impact of various parameters on the fundamental frequency of FGP nanobeam. The results show that factors such as temperature gradient, nonlocal parameter, and material length scale have significant influence on the natural frequency.
ENGINEERING APPLICATIONS OF ARTIFICIAL INTELLIGENCE
(2023)
Article
Engineering, Mechanical
Mohammad Hemmat Esfe, Sayyid Majid Motallebi, Soheyl Alidoust, Seyed Naser Hosseini Tamrabad, Davood Toghraie, Hossein Hatami
Summary: The rheological behavior of MWCNT-Al2O3 (10%-90%) / SAE40 oil hybrid nanofluid under different conditions was studied using the RSM statistical method. Three different models (2FI, Quadratic, and Cubic) were evaluated, and the cubic model was chosen as the optimal model. The viscosity of the nanofluid was used for optimization. The selected model showed high correlation indices, with R2, C.V, C.D, P-value, and Std. Dev values of 0.9996, 1.04,-3.785.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Engineering, Mechanical
Davood Toghraie, Seyed Naser Hosseini Tamrabad, Soheyl Alidoust, Hossein Hatami
Summary: The performance of hybrid nanofluid (HNF) based on SAE40 oil was investigated using response surface methodology (RSM) in this study. Various statistical analyses were conducted to evaluate different modeling functions, and the quartic model was found to have the highest accuracy in presenting the properties of HNF. The optimal viscosity mode of HNF for lubrication in a cold environment was suggested as 212.360 MPa.sec.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Sajjad Hashempour, Davood Toghraie, Mohammad Ali Fazilati
Summary: This study investigates the thermal conductivity of nanofluids prepared by dispersing nanoparticles into a base fluid using a two-stage method. The results show that both temperature and solid volume fraction have a positive effect on the thermal conductivity of the nanofluids.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Construction & Building Technology
Seyed Amir Mousavian Hejazi, Atra Feyzpour, Mohamad Khaje, Abolfazl Eslami, Milad Fouladgar, S. Ali Eftekhari, Davood Toghraie
Summary: In this study, a comprehensive three-dimensional finite element model is developed to investigate the effect of rigidity and flexibility parameters on the behavior of superstructure foundations. The elastoplastic constitutive model based on the finite element method is employed, and the model is calibrated using software programs. The study explores various factors and conditions that affect the design, such as geometry, soil properties, and different types of foundations.
CASE STUDIES IN CONSTRUCTION MATERIALS
(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)
