Article
Materials Science, Ceramics
Biswanath Bhoi, Mangesh S. Diware
Summary: This study demonstrates the growth of highly oriented YIG films on amorphous quartz substrates with excellent magnetic properties and structural characteristics. The formation of YIG with preferred orientation opens up significant opportunities for preparing textured or single crystal materials on amorphous substrates, which is important for integrated applications with semiconductor technology.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Ceramics
Charanjeet Singh, Ebtesam E. Ateia, Sukhleen Bindra Narang, Mohamed Farag, Jasbir Singh, D. E. El-Nashar
Summary: Flexible magnetic nanocomposite materials incorporating cobalt/calcium ferrite nanoparticles in the EPDM rubber matrix were studied for their microwave characteristics, with structural characterization conducted using various techniques. The nanocomposite was found to have low magnetic and dielectric loss, making it suitable for low-loss applications in wireless communication.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Prajna P. Mohapatra, Pamu Dobbidi
Summary: Carbon black reinforced lithium ferrite composites (LFO/CB) were synthesized to enhance the electromagnetic interference (EMI) shielding effectiveness (SE). The composites showed high total SE and absorption efficiency at specific CB concentrations, and the properties of the materials can be tailored by varying the CB content. These findings suggest that LFO/CB composites have potential applications in the defense and telecommunication sectors.
MATERIALS CHARACTERIZATION
(2022)
Article
Chemistry, Physical
Liang Zhou, Huan Xu, Gexin Su, Libin Zhao, Hongbo Wang, Zhenjun Wang, Zhuo Li
Summary: By controlling the TEOS content, the microwave absorption properties of SiO2-coated FeSiAl absorbents were significantly enhanced, with a wide effective absorption bandwidth.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Ceramics
Yanjun Liu, Guoqiang He, Yinghan He, Haiqing Deng, Xiaoli Wei, Pengxiang Gao, Hongtian Li, Hailan Qin, Xin Qu, Yaqi Xiao, Shan Deng, Kaiyang Liu, You Wu, Huanfu Zhou
Summary: Sr3Y2Ge3O12 ceramics with cubic garnet structure were prepared by solid-phase reaction. The ceramics exhibited relatively dense and homogeneous microstructures with clear grain boundaries at the optimum sintering temperature, as confirmed by X-ray diffraction and scanning electron microscopy. The dielectric constant and quality factor showed a strong correlation with bulk density. The sintered Sr3Y2Ge3O12 ceramic at 1275 degrees C demonstrated good microwave dielectric properties, with epsilon r = 7.23, Q x f = 27203 GHz, and tau f =-26.79 ppm/degrees C. The value of Q x f increased to 45000 GHz at an ambient temperature of 150 degrees C. A high bulk density of 4.68 g/cm3 and a relative density of 92.9% were also achieved.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Naichao Chen, Bin Xiao, Xinwei Xu, Tao Sun, Meiyu Chen, Renchao Hu, Xinglei Deng, Xianqiang Chen, Hong Wang
Summary: In this paper, LMO-NCZO ceramic composites were consolidated using cold sintering method at a temperature of 150 degrees C, showing excellent magnetodielectric properties under a uniaxial pressure of 220 MPa and with a relative density exceeding 95%, making them potentially suitable for miniaturization of electronic devices.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Chemistry, Physical
Yaning Lin, Lichuan Jin, Linling Li, Hui Zheng, Huaiwu Zhang
Summary: Aluminum-doped hexagonal barium ferrite film with high perpendicular magnetic anisotropy (PMA) and remanence ratio was prepared by post-annealing at high temperature on Al2O3 substrate. The crystal structure measurements showed improved crystallinity and orientation after high temperature post-annealing, while diffusion of Al ions from the Al2O3 substrate into the ferrite film occurred at 1100 degrees C annealing temperature. The diffusion phenomenon was confirmed by the distribution of elements in the cross-section, resulting in a decrease in saturation magnetization and an increase in coercivity and remanence ratio. A hexagonal barium ferrite film with large PMA field, relatively small FMR linewidth, and high remanence ratio was obtained by annealing the film at 1100 degrees C, showing potential for application in self-biased microwave devices.
CHEMICAL PHYSICS LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Prajna P. Mohapatra, Pamu Dobbidi
Summary: Erbium substituted lithium ferrite/carbon black composites were synthesized and their morphological, structural, complex permeability, permittivity, and EMI shielding effectiveness were investigated. The substitution of Er resulted in an enhancement in lattice constant, saturation magnetization, and coercivity. 3d-4f coupling was promoted due to the insertion of Er, leading to variation in magnetic, dielectric, and conduction mechanisms. The shielding effectiveness was significantly improved, with absorption playing a more important role than reflection. The obtained results indicate that LE6FO/CB is a promising candidate for EMI shielding applications.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Jie Li, Feng Gao, Gang Wang, Yan Yang, Yahui Sun, Haokai Su, Xuening Han, Huaiwu Zhang, Qiang Li
Summary: In this study, Sm-Ga ions were substituted into MgCd ferrite through a solid state method at low temperature with the addition of a BBSZ glass. The substitution did not alter the spinel phase formation, but affected the grain size, density, and magnetic properties. The material showed potential for applications in microwave devices due to the changes in magnetic properties induced by Sm-Ga substitution.
MATERIALS RESEARCH BULLETIN
(2021)
Article
Chemistry, Multidisciplinary
P. Raju, P. Neelima, G. Neeraja Rani, M. Kanakadurga
Summary: By incorporating PANI filler into the ferrite matrix, the microwave absorbing properties were enhanced with increased dielectric and magnetic losses. The nanocomposite sample with 50 wt% PANI exhibited minimum reflection loss of -42.10 dB near 9.35 GHz with an effective bandwidth of 3.8 GHz and -39.34 dB near 14.05 GHz with an effective bandwidth of 2.8 GHz.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2021)
Article
Engineering, Electrical & Electronic
Marcin Kacki, Marek S. Rylko, John G. Hayes, Charles R. Sullivan
Summary: This article presents a comprehensive investigation of the high-frequency magnetic flux distributions in manganese-zinc ferrite ring cores. New experimental characteristics are presented and used in the flux modeling. The models are used to investigate the high-frequency effects. A complete experimental validation is presented. The presented analytical methods show a very good correlation with the measurements.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Marcin Kacki, Marek S. Rylko, John G. Hayes, Charles R. Sullivan
Summary: Manganese-zinc ferrites are preferred for high-frequency and high-power magnetic components. However, manufacturers' material specifications lack sufficient information for design optimization. This article proposes a method to determine the properties of Mn-Zn ferrite and provides experimental frequency characteristics for four ferrite materials. The impacts of physical size, temperature, and force on ferrite properties are also considered.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2022)
Article
Materials Science, Ceramics
Liang Zhou, Junxiao Yan, Julong Huang, Hongbo Wang, Xingang Wang, Zhenjun Wang
Summary: The dielectric and microwave absorption properties of FeSiAl/Al2O3 composites were significantly improved with increasing FeSiAl particle size. The composite containing 25-48 μm FeSiAl powder showed minimum reflection loss of -34.4 dB at 11.7 GHz, demonstrating good absorption performance.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Somnath Sahu, Prajna P. Mohapatra, Hodam Karnajit Singh, Pamu Dobbidi
Summary: Sr-doped nano Ni-Co ferrite (NCFO) materials were synthesized using high-energy ball milling, and the microwave absorption performance of the materials was systematically studied. It was found that the saturation magnetization (Ms) decreased with increasing Sr concentration, except for NCFOS2, which had the highest Ms value of 60 emu/g. The magnetic parameters such as remanent magnetization, coercivity, and anisotropic constant showed a similar trend, increasing up to NCFOS2 and then decreasing. The correlation between lattice strain and magnetic parameters was established, and the electromagnetic wave parameters were recorded in the Ku band. The NCFOS2 material exhibited a maximum reflection loss (RL) of -35.59 dB at 17.74 GHz with a thickness of 3 mm, indicating its promising potential as a microwave absorber.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Hsien-Wen Chao, Wen-Ju Lai, Tsun-Hsu Chang
Summary: The permeability of ferrite is a second-rank tensor that depends on saturation magnetization, dc bias magnetic field, and operating frequency. By adjusting the bias magnetic field, the permeability tensor can be manipulated to change the wave's propagating properties. We proposed a coaxial structure with a toroidal ferrite that acts as a switch at frequencies around 2.45 GHz. A variation of 62 Oe in the bias magnetic field changed the device's state from transparent to opaque. The derived equations explain the underlying physics and provide a foundation for designing similar switches at other frequency bands.
SENSORS AND ACTUATORS A-PHYSICAL
(2022)
Article
Engineering, Electrical & Electronic
P. Neelima, T. Ramesh, P. Raju, S. R. Murthy
Summary: The study focused on enhancing the microwave absorbing properties in dysprosium ion-substituted nickel-zinc ferrites. The results showed significant improvement in magneto-dielectric properties and microwave absorption capacity of the materials, making them potential candidates for microwave absorber applications in X-band.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Physics, Applied
V. V. Ramakrishna, S. Kavita, T. Ramesh, Ravi Gautam, R. Gopalan
Summary: The study found that using different feed rates in jet milling during the preparation of Mn50Bi50 alloy can affect the phase composition and magnetic properties of the alloy. Jet milling of the crushed alloy leads to changes in coercivity and magnetization. Additionally, it was observed that increasing the feed rate during jet milling can lead to a decrease in both coercivity and magnetization.
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
(2021)
Article
Engineering, Electrical & Electronic
N. Maramu, G. Sriramulu, T. Ramesh, D. Ravinder, S. Katlakunta, T. Anil Babu, N. V. Krishna Prasad
Summary: This study synthesized copper-doped M-type strontium hexaferrite particles with different levels of copper doping, and investigated their structure, morphology, microwave absorption, and magnetic properties using techniques such as X-ray diffraction. The research revealed structural characteristics of the materials with varying levels of copper doping.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Polymer Science
Anji Reddy Polu, Pramod K. Singh, P. Siva Kumar, Girish M. Joshi, T. Ramesh, I. M. Noor, Aysh Y. Madkhli, Sunanda Kakroo
Summary: In this study, ion conducting solid polymer electrolyte films based on polymer poly(ethylene oxide) (PEO) were synthesized using anhydrous acetonitrile as solvent. The introduction of ionic liquid resulted in changes in physicochemical properties of these electrolyte films, including decreased crystallinity and melting points, and increased ionic conductivity. The optimized composition showed good electrochemical stability window at ambient temperature, making it a potential separator in Li-ion batteries.
HIGH PERFORMANCE POLYMERS
(2023)
Article
Materials Science, Multidisciplinary
T. Ramesh, B. Sravanthi, Kiran Kumar Ganta, K. Praveena, J. Naga Vishnu Vardhan, Anji Reddy Polu
Summary: Multidoped Ni-Al ferrites with tailored magnetic and dielectric properties were successfully synthesized and characterized, showing excellent thermal stability and performance for high-power microwave devices operating at high frequencies. The thermal stability of magnetization and insertion loss properties initially increase with Al3+ concentration, peak at x = 0.5, and then decrease with further Al3+ concentration increase.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Engineering, Electrical & Electronic
T. Ramesh, B. Sravanthi, G. Umadevi, K. Ramaiah, B. Anna Tanuja Safala, T. Suneetha
Summary: The aim of this study is to synthesize ZnO nanostructures and investigate their gas-sensing, cytotoxicity, and antibacterial activity. Three different synthesis methods were employed: sol-gel, chemical co-precipitation, and microwave heating. Structural, morphological, and optical features of the synthesized materials were analyzed using X-ray diffraction, field effective scanning electron microscopy, and UV-Visible spectroscopy. The synthesized samples exhibited a hexagonal wurtzite structure, and their morphology and absorption varied depending on the synthesis method. Gas-sensing tests showed that the synthesized powders had a strong capability to sense NH3. The compounds also exhibited antimicrobial and anticancer activity, with significant activity observed against certain cancer cell lines.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
T. Ramesh, K. Sadhana, K. Praveena
Summary: Manganese zinc ferrite (MZF)-polyaniline (PANI) nanocomposites were synthesized and their impact on microwave absorbing properties was investigated. The composites showed the existence of spinel phase ferrite and polymer phase. Magnetic properties of the composites revealed soft magnetic nature. The complex permittivity and permeability parameters increased with ferrite volume concentration, and the composite MZF/PANI-50 exhibited a high reflection loss at 10 GHz.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
P. Neelima, P. Usha, T. Ramesh, Kiran Kumar Ganta
Summary: In this study, dysprosium-substituted Mn-Zn ferrites were synthesized and the effect of Dy3+ substitution on the structural, electrical and magnetodielectric properties of Mn-Zn ferrites was examined. It was found that for lower concentrations of Dy3+, the prepared ferrites had a single spinel phase structure, while a minor phase of DyFeO3 appeared for higher concentrations. The electrical properties showed an increase in resistivity with Dy3+ substitution. The magnetodielectric properties showed significant changes with the amount of Dy3+ present, indicating that Dy3+ substitution can be used to tune the electrical and magnetodielectric properties of Mn-Zn ferrites.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Proceedings Paper
Polymer Science
Thotakura Ramesh, M. Chandra Shekhar Reddy, Basireddy Sravanthi, Anjireddy Polu, P. Nageswar Rao
Summary: This study investigates the structural and magnetodielectric properties of gadolinium substituted yttrium iron garnet. The powders are prepared by hydrothermal synthesis method and sintered at different temperatures. X-ray diffraction and field emission scanning electron microscopy are used to characterize the structure and morphology of the samples. The dielectric properties are measured over a frequency range, and the magnetic properties are found to depend on the sintering temperature. Thermal change in magnetization and transition temperature are also measured.
MACROMOLECULAR SYMPOSIA
(2023)
Proceedings Paper
Polymer Science
Surasi Kiran, Konagolla Saibaba, Thotakura Ramesh, Kollu Ashok, Anji Reddy Polu
Summary: Zinc oxide (ZnO) and zinc ferrite (ZnFe2O4) powders were synthesized using a sol-gel combustion method. The crystal structure and microstructure of the synthesized powders were studied using XRD, FTIR, and FESEM. XRD studies showed nanocrystalline hexagonal wurtzite structure for ZnO and spinel phases for ZnFe2O4. The composite samples of (x) ZnO + (1-x) ZnFe2O4 were prepared and characterized using XRD, UV-visible spectroscopy, and SEM.
MACROMOLECULAR SYMPOSIA
(2023)
Proceedings Paper
Polymer Science
Thotakura Ramesh, Basireddy Sravanthi, Kollu Ashok, A. Bhaskar, Anji Reddy Polu
Summary: Ni0.53Cu0.12Zn0.35Fe2O4 ferrite powder was synthesized using the microwave-assisted hydrothermal technique and characterized using XRD, FTIR, and FESEM. The powder was sintered using microwave and conventional methods, and the properties of the sintered samples were compared. The study found that the sintering process has an impact on the magnetodielectric performance of ferrites, and the changes in properties were briefly reviewed.
MACROMOLECULAR SYMPOSIA
(2023)
Article
Materials Science, Multidisciplinary
Kanakamedala Sowmya, Yarramareddy Aparna, Antham Chendra Prakash, Ramesh Thotakura, Ankam Bhaskar
Summary: In this study, pure and metal-doped ZnO nanopowders were synthesized using the coprecipitation method. The structural characterization, morphology analysis, elemental composition measurement, energy bandgap measurement, magnetic property measurement, and antimicrobial activity measurement were conducted. The results showed that metal doping can affect the structure, morphology, elemental composition, energy bandgap, and magnetic behavior of ZnO, and the introduction of Al doping can significantly enhance the antimicrobial activity of ZnO.
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
T. Ramesh, P. Usha, P. Neelima, N. Pavan Kumar
Summary: This study investigates the impact of substituting Dy3+ ions on the structural, magnetic, and dielectric properties of Nickel Zinc (Ni-Zn) ferrites. The synthesized powders were characterized using XRD and FTIR, revealing the presence of different phases at varying Dy concentrations. The size and morphology of the synthesized powders were examined using FESEM. The study also found an increase in dc resistivity with an increase in Dy3+ concentration.
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
T. Suresh Kumar, G. Sriramulu, P. Raju, T. Ramesh, K. Praveena, S. Katlakunta
Summary: Microwave hydrothermal method was used to synthesize Ce3+ doped MgFe2-xCexO4 nanoparticles, which were characterized by various techniques. The synthesized nanoparticles exhibited cubic spinel structure with good magnetic and dielectric properties. Ce3+ doping also caused variation in the optical bandgap.
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
A. R. Polu, V. Mekala, T. Ramesh
Summary: Solid polymer electrolyte films containing sodium acetate were prepared using the solution-cast approach. The addition of salt resulted in a lower melting point and significantly enhanced conductivity.
JOURNAL OF OPTOELECTRONIC AND BIOMEDICAL MATERIALS
(2022)
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)
