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
Jose Luis Ortiz-Quinonez, Jesus Alberto Ramos Ramon, Ma Eunice de Anda Reyes, Apurba Ray, Sachindranath Das, Umapada Pal
Summary: In this study, NixMn3-xO4 nanoparticles with different Ni contents were successfully synthesized using a low-temperature sol-gel process, and the effects of Ni incorporation on their morphology, structure, and magnetic properties were investigated. High Ni content causes lattice shrinkage, while low Ni content leads to lattice expansion and superparamagnetic behavior.
MATERIALS RESEARCH BULLETIN
(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
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
Materials Science, Multidisciplinary
Shahzadi Noreen, Abid Hussain
Summary: The nanostructured Cu0.25M0.75Fe2O4 (M = Mn, Mg, Ni, Co) ferrites were synthesized by the sol-gel auto-combustion method, and their structural, magnetic, morphological, and optical properties were investigated. XRD, UV-Vis, VSM, SEM, EDX, and FTIR were employed for characterization. The obtained spinel ferrites were found to be single-phased spinels with no secondary phase peaks. The substitution of M in Cu0.25M0.75Fe2O4 ferrites affected their magnetic properties, resulting in a transition from ferrimagnetic to ferromagnetic behavior. The UV-Vis analysis showed that the ferrites had a direct band gap.
Article
Materials Science, Ceramics
J. B. Shitole, S. N. Keshatti, S. M. Rathod, Santosh S. Jadhav
Summary: Rare earth Yttrium (Y3+) doped Ni-Cu nanoferrites were successfully prepared by sol gel route, exhibiting single phase cubic spinel structure. The crystallite sizes range from 51-84 nm, influencing the magnetic properties. The hysteresis loops and lattice parameters were used to study the magnetic and structural characteristics of the NCY ferrites. The dielectric behavior was governed by space charge polarization.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Katabathini Narasimharao, Tarek T. Ali, Bahaa M. Abu-Zied, Sulaiman Yahya Alfaifi
Summary: A series of nanocrystalline porous CoFexAl2-xO4 spinel samples with different Fe concentration (0.00 <= x <= 2.00) were synthesized using a simple ammonia fueled combustion route at 400 degrees C. The structural, morphological, and textural properties of the synthesized powders were analyzed. The electrical and magnetic properties of the spinels were also studied.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Ghulam Mustafa, Muhammad Khalid, Ali Dad Chandio, Kiran Shahzadi, Zaheer Uddin, Junaid Kareem Khan, Naimat Ullah Channa, Zaheer Abbas Gilani, H. M. Noor ul Huda Khan Asghar
Summary: A series of lanthanum-doped nickel ferrites were synthesized and their dielectric properties were studied. The results showed that the La doping induced lattice strain and affected the lattice constant, resulting in changes in dielectric loss and dielectric constant. The materials exhibited the most stable dielectric properties at high frequencies, making them potential candidates for microwave devices.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2022)
Article
Materials Science, Ceramics
Junaid Kareem Khan, Muhammad Khalid, Ali Dad Chandio, Kiran Shahzadi, Zaheer Uddin, Ghulam Mustafa, Muhammad Saeed Akhtar, Naimat Ullah Channa, Zaheer Abbas Gilani
Summary: Spinel ferrites are widely studied due to their practical high frequency applications. Nickel spinel ferrites with varying aluminum doping concentrations were prepared and the dielectric properties were investigated.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2022)
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
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
Chemistry, Physical
A. Pakalniskis, R. Skaudzius, D. V. Zhaludkevich, A. L. Zhaludkevich, D. O. Alikin, A. S. Abramov, T. Murauskas, V. Ya. Shur, A. A. Dronov, M. V. Silibin, A. Selskis, R. Ramanauskas, A. Lukowiak, W. Strek, D. V. Karpinsky, A. Kareiva
Summary: In this study, samarium substituted bismuth ferrite ceramics were prepared by sol-gel synthesis method and studied using various microscopic techniques to investigate the evolution of crystal structure across the morphotropic phase boundary region. The compounds exhibited structural transitions from polar active rhombohedral phase to anti-polar orthorhombic phase and then to non-polar orthorhombic phase within a specific concentration range. The results revealed a coexistence of different structural phases in the compounds, with a notable difference in the concentration range ascribed to the morphotropic phase boundary estimated by microscopic measurements.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Jamshed Ahmad, Muhammad Khalid, Ghulam Mustafa, Abeer A. AlObaid, Tahani Al-Muhimeed, Muhammad Saeed Akhtar, Arif Akhtar Azam, Ghazanfar Nazir, Hisham S. M. Abd-Rabboh
Summary: In this study, single phase Bismuth Iron Oxide (BFO) nanoparticles were successfully synthesized using the Sol-Gel method, and the effect of calcinating temperature on their crystallinity was investigated. The improvement in crystallinity was demonstrated by the growth of crystallites and the analysis of grain size using SEM and XRD. The dielectric constant of the nanoparticles was determined, showing a minimum value at higher frequency, and the temperature and frequency dependent properties were also studied. The results suggest the potential applications of the prepared BFO nanoparticles in advanced magneto and ferroelectric devices.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Materials Science, Ceramics
G. Vinod, K. Rajashekhar, J. Laxman Naik
Summary: The current study investigates the effects of rare-earth Dy3+ ion substitution on the structural, optical, electrical, and magnetic properties of Cu0.8Cd0.2Fe2O4 nano-ferrites. Dy3+ doped Cu-Cd nano-ferrites with varying Dy3+ concentrations were fabricated using the citrate sol-gel auto combustion technique. The properties of these ferrite nanoparticles were characterized using various techniques including XRD, SEM, TEM, FTIR, UV-Vis, ESR, VSM, and I-V measurements.
CERAMICS INTERNATIONAL
(2023)
Article
Multidisciplinary Sciences
R. E. El shater, A. W. Awad, E. K. Abdel-Khalek, H. H. El-Bahnasawy, T. M. Meaz, Ehab A. Okba
Summary: Two ferrite series, one consisting of nanosize samples prepared by co-precipitation and the other consisting of bulk samples sintered at 1000 degrees C, were synthesized and analyzed. The nanomaterials exhibited larger crystallite size, theoretical density, and porosity compared to the bulk materials. Aggregation of nanoparticles was observed in the nanoscale samples, while the bulk specimens had limited surface area. Raman spectroscopy confirmed the presence of the spinel phase and variations in cation occupation ratios. Optical characterization indicated that the absorption cutoff frequency decreased with increased chromium content. The average optical bandgap was 3.6 eV for nanosamples and 4.6 eV for bulk materials. The strongest photoluminescence emission was observed at wavelengths between 415 and 460 nm, with red-shifted emission peaks in both bulk and nanoscale materials. Sintering resulted in an increase in photoluminescence.
SCIENTIFIC REPORTS
(2023)
Article
Materials Science, Textiles
Nurul Asyiqah Binti Mohamad Khidhir, Saravana Kumar Jaganathan, Ahmad Zahran Mohd Khudzari, Ahmad Fauzi Ismail
Summary: In this research, cardiac patches made from polyurethane and cobalt nanoparticles synthesized from green tea were fabricated and evaluated. The patches exhibited smaller diameter, hydrophilic surface, and enhanced strength compared to traditional polyurethane. These patches show promise for cardiac applications.
JOURNAL OF THE TEXTILE INSTITUTE
(2022)
Article
Materials Science, Textiles
Mohan Prasath Mani, Saravana Kumar Jaganathan, Ahmad Fauzi bin Ismail, Ahmad Zahran Md Khudzari
Summary: This study fabricated composite based on polyurethane containing lemon grass oil and zinc nitrate using electrospinning technique, which showed excellent properties including lower diameter, hydrophobicity or hydrophilic nature, improved mechanical strength, reduced toxicity, and enhanced calcium deposition compared to PU. These developed nanocomposites are potential candidates for bone tissue engineering.
JOURNAL OF INDUSTRIAL TEXTILES
(2022)
Article
Chemistry, Physical
M. A. Almessiere, S. Guner, Y. Slimani, A. Baykal, Sagar E. Shirsath, A. Demir Korkmaz, R. Badar, A. Manikandan
Summary: Dy3+ and Y3+ ions co-doped Zn0.5Mn0.5Fe2O4 nanoparticles were synthesized through an ultrasonication approach to tune their structural and magnetic properties. The influence of the co-doping on the structural and magnetic characteristics was analyzed by X-ray diffraction and electron microscopy, showing changes in crystal structure and size.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
Article
Engineering, Environmental
Mallikarjunagouda B. B. Patil, Shridhar N. N. Mathad, Arun Y. Y. Patil, Anish Khan, Mahmoud Ali Hussein, Abeer M. M. Alosaimi, Abdullah M. M. Asiri, A. Manikandan, Mohammad Mujahid Ali Khan
Summary: The study prepared poly(vinyl alcohol) (PVA) and starch-based polymeric films with different concentrations of grapefruit seed extract (GSE). The films showed improved mechanical properties and antimicrobial efficacy when a small amount of GSE was incorporated.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2023)
Article
Crystallography
Salma A. A. Al-Zahrani, Mallikarjunagouda B. B. Patil, Shridhar N. N. Mathad, Arun Y. Y. Patil, Ahmed A. A. Otaibi, Najat Masood, Dorsaf Mansour, Anish Khan, A. Manikandan, Edi Syafri
Summary: The green synthesis approach using Punic granatum plant leaf extract successfully produced environmentally friendly zinc oxide nanoparticles. Characterization using various techniques revealed that the nanoparticles were crystalline, with an average diameter of 20 nm. The synthesized nanoparticles demonstrated effective photocatalytic oxidation of reactive dye in water, advancing the development of green photocatalysts for dye removal.
Article
Chemistry, Physical
Salma Ahmed Al-Zahrani, Khalid Umar, Saleh Ali Tweib, Jebrel Abdeljawad M. Rashd, Saima Khan Afridi, Showkat Ahmad Bhawani, Ahmed Al Otaibi, Najat Masood, Dorsaf Mansour, Anish Khan, Manikandan Ayyar
Summary: In this study, zinc oxide (ZnO) and zinc oxide/graphene oxide (ZnO/GO) were successfully synthesized using Carica papaya leaf extract and oil palm empty fruit bunch biomass. The samples were characterized to understand their morphology, size, structural phase purity, functional groups and optical properties. The results showed the presence of various peaks and a red shift in the case of ZnO/GO. The synthesized materials exhibited nanosized particles and showed high decolorization efficiency for methylene blue.
Article
Crystallography
Salma A. Al-Zahrani, Mallikarjunagouda B. Patil, Shridhar N. Mathad, Arun Y. Patil, Ahmed Al Otaibi, Najat Masood, Dorsaf Mansour, Anish Khan, Vikas Gupta, Niraj S. Topare, Amita Somya, Manikandan Ayyar
Summary: The study explored the photocatalytic degradation of Acid Red 26 using graphitic carbon nitride (g-C3N4) catalyst and UV-A light. Both synthetic and actual municipal wastewater showed high clearance rates, although the degradation was slower in wastewater due to its complex chemical composition. Intermediate products were identified using liquid chromatography-mass spectrometry (LC-MS), and the importance of reactive species (h⁺ and O-2⁻) in the degradation process was demonstrated.
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
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, Multidisciplinary
C. Bhagya Lakshmi, S. Anna Venus, S. Velanganni, A. Muthukrishnaraj, Manikandan Ayyar, Mohamed Henini
Summary: This study investigates the use of V2O5/ZnO and rGO-V2O5/ZnO nanocomposites as photoanodes to improve the power conversion efficiency of dye-sensitized solar cells. The structural and electrical characteristics of these nanocomposites are analyzed, and it is found that they can significantly enhance the performance of the solar cells.
Article
Chemistry, Multidisciplinary
Pitcheri Rosaiah, Ponnusamy Divya, Sangaraju Sambasivam, Ammar M. Tighezza, V. Kalaivani, A. Muthukrishnaraj, Manikandan Ayyar, Theophile Niyitanga, Haekyoung Kim
Summary: MnO2 NWs/MWCNT and MnO2 NWs/rGO composites were synthesized using a hydrothermal method, showing high specific discharge capacity and excellent cycling stability.
Article
Green & Sustainable Science & Technology
S. Saranya, S. Dhanapandian, S. Suthakaran, Sankaranarayanan Nagarajan, N. Krishnakumar, S. Dinesh, A. Muthukrishnaraj, Ayyar Manikandan
Summary: Evolving efficient electrochemically active nanostructures from earth-abundant transition metals, such as nickel (Ni) and manganese (Mn), has gained significant interest for energy storage applications. In this study, Ni-Mn diselenide nanoparticles with spherical morphology were successfully synthesized using a simple hydrothermal method. The synthesized NiMnSe2 nanoparticles demonstrated a cubic phase and excellent electrochemical behavior, with a specific capacitance of 1490F/g.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2023)
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
Suthagar Govindaraj, Saravanakumar Ayyapan, Poornima Durai, Priyanka Kandasamy, Loganathan Guganathan, Madhappan Santhamoorthy, Anbazhagan Murugan, Selvakumar Suthakaran, Subbarayan Sathiyamurthy, Manikandan Ayyar
Summary: The current study aims to collect baseline research data for the area near the Vellar estuary mangroves. Factors such as temperature, nitrate, pH, salinity, ammonia, inorganic phosphate, dissolved oxygen, and silicate play a key role in chemical and biological water reactions as well as the growth of flora and fauna in the estuary. The study reveals unique seasonal variations and an increasing trend in nutrient levels during the summer to monsoon seasons.
ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS
(2023)
Article
Chemistry, Applied
Magda Alahmmar, Praseetha Prabhakaran, Saravana Jaganathan, Nik Ahmad Nizam Nik Malek
Summary: In this study, PCL composite electrospun nanofibers were fabricated and the processing parameters were optimized. The effects of solvents and polymer concentration on the morphology of the nanofibers were investigated. The nanofibers were characterized using various techniques. The drug-loaded nanofibers were considered as potential materials for drug delivery applications.
BIOINTERFACE RESEARCH IN APPLIED CHEMISTRY
(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)