Review
Chemistry, Physical
Huan Zhang, Xiao Li Liu, Hai Ming Fan
Summary: Magnetic resonance imaging (MRI) has revolutionized medical imaging diagnostics. However, the clinical use of Gd-based contrast agents (CAs) still has limitations, making the development of magnetic nanoparticle-based CAs a promising avenue for research.
Article
Chemistry, Multidisciplinary
S. A. Amali S. Subasinghe, Jonathan Romero, Cassandra L. Ward, Matthew D. Bailey, Donna R. Zehner, Prakrut J. Mehta, Fabio Carniato, Mauro Botta, Jason T. Yustein, Robia G. Pautler, Matthew J. Allen
Summary: The complexes described in this study act as contrast agents for magnetic resonance imaging thermometry, enhancing contrast between 275 and 325 K. The temperature response of the fluorinated contrast complex is primarily based on the modulation of water exchange caused by trifluoromethyl groups, which can be chemically controlled.
CHEMICAL COMMUNICATIONS
(2021)
Article
Biochemistry & Molecular Biology
Songbai Zhang, Vega Lloveras, Silvia Lope-Piedrafita, Pilar Calero-Perez, Shuang Wu, Silvia Lope-Piedrafita, Ana Paula Candiota, Jose Vidal-Gancedo
Summary: MRI is a highly required imaging approach for the early diagnosis and follow-up of tumors, especially brain cancer. Organic radicals anchored on a dendrimer macromolecule surface show promising potential as alternatives to traditional Gd-based contrast agents, with similar contrast enhancement effects, lower toxicity, and longer biological stability.
Article
Chemistry, Multidisciplinary
Simona Baroni, Rachele Stefania, Lionel M. Broche, Nicholas Senn, David J. Lurie, P. James Ross, Silvio Aime, Simonetta Geninatti Crich
Summary: This study introduces a novel class of MRI contrast agents with remarkable relaxation effects without the need for paramagnetic metal ions. Image acquisition at variable magnetic field strength is required for their detection using fast field cycling imaging scanners.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Gaoji Wang, Goran Angelovski
Summary: A novel Gd3+ chelate has been developed that can selectively recognize Zn2+ and exhibit a significant increase in longitudinal relaxivity, representing a new momentum in developing suitable contrast agents for functional molecular imaging studies of Zn2+.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Materials Science, Ceramics
M. Elansary, M. Belaiche, Y. Mouhib, O. M. Lemine, N. Bentarhlia, I. Bsoul
Summary: Assessing the biocompatibility of CoFe(2-x-y-z)GdxSmyHozO4 nanoparticles synthesized by the auto-combustion method was conducted for the first time. The nanoparticles showed a quasi-spherical shape with size distribution of 24-51 nm. The magnetic properties of the nanoparticles can be tuned by doping for various biomedical applications. Sub-chronic toxicity evaluation in rats indicated no significant toxicity at doses below 250 mg/kg (oral) and 40 mg/kg (intraperitoneal), suggesting potential use in biomedical applications.
CERAMICS INTERNATIONAL
(2023)
Review
Chemistry, Multidisciplinary
Mike Jeon, Mackenzie Halbert, Zachary R. Stephen, Miqin Zhang
Summary: Gadolinium-based chelates are commonly used contrast agents for MRI, but their toxicity and potential retention in patients' bodies have raised safety concerns. Iron oxide nanoparticles have emerged as a promising alternative due to their non-toxic and biodegradable nature, but their development as T-1 contrast agents is complex and challenging. Progress is being made in exploring IONPs as safe and improved alternatives, but there are still many hurdles to overcome before they can be used clinically.
ADVANCED MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Vikas Nandwana, Vinayak P. Dravid
Summary: This study demonstrates the versatility and elegance of ferrite-spinel based magnetic nanostructures (MNSs) as a contrast agent in MRI. By tuning their crystal chemistry, the magnetic properties of Fe3O4 MNS can be enhanced. Doping with Mn2+ and Zn2+ at the right stoichiometry resulted in high saturation magnetization and magnetic anisotropy, which were leveraged to develop more biocompatible and efficient T-1-weighted MRI contrast agents compared to Gd-based complexes.
Article
Nanoscience & Nanotechnology
Shengxiang Fu, Zhongyuan Cai, Li Liu, Xiaomin Fu, Changqiang Wu, Liang Du, Chunchao Xia, Su Lui, Qiyong Gong, Bin Song, Hua Ai
Summary: Compared to traditional branched polymers, branched polymers with Gd(III) chelates as the internal skeleton show higher kinetic stability and better relaxivity enhancement for MRI contrast agents. Different poly-DOTA branched polymers were synthesized and the Gd(III) chelates displayed excellent stability and high T1 relaxivities. In vivo studies showed that P4-Gd had the best performance in terms of MRA effect, vascular stenosis detection, and longer observation window compared to Gd-DOTA. Overall, poly-DOTA branched polymers with Gd(III) chelates are promising candidates for MRI probes with improved relaxivity enhancement.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Haiyang Jia, Fen Zhang, Chen Zhu, Jiawei Sun, Xiao Xie
Summary: This study synthesized amino-grafted ferromagnetic nanoparticles with highly stable dispersion using deep-eutectic-solvent electrolysis, and successfully applied them in magnetic resonance imaging. These nanoparticles exhibited high biocompatibility and had high longitudinal and transverse relaxation efficiencies, enabling prominent weighted imaging of T1 and T2 of the liver, as well as significant distinction between normal tissue and liver tumors.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Biochemical Research Methods
Jiaqian Li, Steven E. Kirberger, Yiao Wang, Huarui Cui, Carston R. Wagner, William C. K. Pomerantz
Summary: The design of imaging agents with high fluorine content is important for overcoming signal detection limits in F-19 MRI-based molecular imaging. This study characterizes new highly fluorinated synthetic peptides composed of highly fluorinated amino acids, which show intense fluorine resonances and acceptable solubility. The results support the potential use of fluorinated peptides for molecular imaging.
BIOCONJUGATE CHEMISTRY
(2023)
Article
Biotechnology & Applied Microbiology
Xiaoming Wang, Shiwei Guo, Zhiqian Li, Qiang Luo, Yan Dai, Hu Zhang, Yun Ye, Qiyong Gong, Kui Luo
Summary: The concept of non-metallic MRI contrast agents has emerged to address the potential toxicity of metal-based contrast agents. Paramagnetic nitroxides are being studied for their stability and imaging mechanisms similar to metal-based agents, with the challenge of lower relaxivity and rapid in vivo metabolism. Macromolecular nitroxides contrast agents have been shown to increase stability and improve water relaxation, with the potential for expanding application in tumor, liver, kidney, and cardiovascular imaging.
JOURNAL OF NANOBIOTECHNOLOGY
(2021)
Article
Chemistry, Physical
Maria Volokhova, Anna Shugai, Masahiko Tsujimoto, Anna-Liisa Kubo, Sven Telliskivi, Mait Nigul, Peep Uudekull, Heiki Vija, Olesja M. Bondarenko, Jasper Adamson, Anne Kahru, Raivo Stern, Liis Seinberg
Summary: Nanoparticles with SiO2 coating and cubic iron core show high saturation magnetization, excellent biocompatibility, and potential for MRI contrast agents.
Article
Nanoscience & Nanotechnology
Li-Hua Deng, Hai Jiang, Fu-Lin Lu, Han-Wei Wang, Yu Pu, Chang-Qiang Wu, Hong-Jie Tang, Ye Xu, Tian-Wu Chen, Jiang Zhu, Cheng-Yi Shen, Xiao-Ming Zhang
Summary: By using PEGylated SPIO nanoparticles as MRI contrast agents, different nanocrystal sizes and PEG coatings can be utilized to achieve T-1, T-2, or T-1-T-2 dual-mode imaging at different magnetic field intensities.
INTERNATIONAL JOURNAL OF NANOMEDICINE
(2021)
Article
Biochemistry & Molecular Biology
Tibor Csupasz, Daniel Szucs, Ferenc Krisztian Kalman, Oldamur Holloczki, Aniko Fekete, Dezso Szikra, Eva Toth, Imre Toth, Gyula Tircso
Summary: A new ligand derivative was synthesized to improve the dissociation kinetics of the Mn(II) complex. The ligand exhibited lower basicity but maintained its stability. The exchange rate of the ligand was lower compared to other ligands. These differences were confirmed by calculations and experiments. Additionally, the ligand showed good stability in rat/human serum. However, under certain conditions, some ligand exchange/metal ion exchange occurred.
Article
Instruments & Instrumentation
Lara K. Bogart, Jeppe Fock, Geraldo M. da Costa, Kerstin Witte, Jean-Marc Greneche, Jan Zukrowski, Marcin Sikora, Drew E. Latta, Michelle M. Scherer, Mikkel Fougt Hansen, Cathrine Frandsen, Quentin A. Pankhurst
Summary: This study tested the Fe-57 Mossbauer spectrometric 'centre of gravity' method for quantifying the composition ratio of magnetite/maghemite in biphasic magnetic nanoparticles. The results showed that the method is repeatable and the data analysis phase has a minor contribution to the overall measurement uncertainty. Therefore, the COG method is considered a promising and robust candidate.
Article
Nanoscience & Nanotechnology
Jakub Pawlak, Witold Skowronski, Aritoni Zywczak, Marek Przybylski
Summary: This article discusses the magneto-transport properties of Fe/BTO/LSMO multiferroic tunnel junction, grown on a crystalline STO substrate, with specific focus on static, dynamic, and temperature-dependent behavior. The study shows high tunneling electroresistance and tunneling magnetoresistance in the MFTJ at room temperature. Temperature measurements reveal an exponential decrease in TMR with increasing temperature, while TER remains temperature independent. Electric ferromagnetic resonance measurements demonstrate the presence of two resonance peaks, attributed to LSMO and Fe, respectively.
ADVANCED ELECTRONIC MATERIALS
(2022)
Article
Chemistry, Physical
Dorota Lachowicz, John Stroud, Janusz H. Hankiewicz, River Gassen, Angelika Kmita, Joanna Stepien, Zbigniew Celinski, Marcin Sikora, Jan Zukrowski, Marta Gajewska, Marek Przybylski
Summary: In this study, copper-zinc ferrite nanoparticles coated with a poly(ethylene glycol) layer were synthesized and embedded into agarose gel, successfully designing a novel temperature-sensitive contrast agent for magnetic resonance imaging (MRI). The experimental results showed a strong correlation between temperature and image intensity in MR images of the contrast agent under a temperature gradient.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Krzesimir Korona, Michal Terlecki, Iwona Justyniak, Michal Magott, Jan Zukrowski, Arkadiusz Kornowicz, Dawid Pinkowicz, Adam Kubas, Janusz Lewinski
Summary: Paddlewheel-type binuclear complexes with metal-metal bonding have attracted widespread interest due to their electronic structures and potential applications. In this study, the molecular and electronic structures of diiron(II,II) complexes with different ligands were explored, providing insight into the factors controlling their ground-state electronic configuration and structural diversity.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Chemistry, Physical
Kamil Nowak, Michal Jurczyszyn, Maciej Chrobak, Krzysztof Mackosz, Andrii Naumov, Natalia Olszowska, Marcin Rosmus, Ireneusz Miotkowski, Andrzej Kozlowski, Marcin Sikora, Marek Przybylski
Summary: In this study, we used STM/STS, ARPES, and magnetotransport techniques to investigate the surface topography and electronic structure of pristine Bi2Se3, as well as doped Bi1.96Mg0.04Se3 and Bi1.98Fe0.02Se3. We found a large number of complex, triangle-shaped defects on the surface and observed that the local electronic structure at the defects was influenced by doping in the same way as the electronic structure of the undefected surface. ARPES measurements provided additional information about the electronic structure, showing the dependence of bulk and surface electronic bands on doping. Magneto-transport measurements confirmed the subtle changes in the surface electronic structure induced by doping.
Article
Engineering, Chemical
Juliusz Kuciakowski, Joanna Stepien, Jan Zukrowski, Dorota Lachowicz, Antoni Zywczak, Marta Gajewska, Marek Przybylski, Simone Pollastri, Luca Olivi, Marcin Sikora, Angelika Kmita
Summary: This study demonstrates that the structure and magnetism of nanoscale materials can be adjusted by choosing the initial composition and thermal treatment, providing new prospects for the production and design of nanoscale materials.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Biochemistry & Molecular Biology
Joshua A. Stoll, Dorota Lachowicz, Angelika Kmita, Marta Gajewska, Marcin Sikora, Katarzyna Berent, Marek Przybylski, Stephen E. Russek, Zbigniew J. Celinski, Janusz H. Hankiewicz
Summary: The aim of this project is to fabricate hydrogen-rich silicone doped with magnetic nanoparticles for use as a temperature change indicator in MRI-guided thermal ablations. The nanoparticles were synthesized directly in a medical-grade silicone polymer solution to avoid clustering. The synthesized nanoparticles exhibited superparamagnetic behavior and can potentially be used as a temperature indicator in high-temperature MRI-guided ablations.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Physics, Applied
Vitaliy Bilovol, Marcin Sikora, Sona Lisnikova, Jan Zukrowski, Katarzyna Berent, Marta Gajewska
Summary: Temperature is a crucial factor in the synthesis of nanoparticles, and it has a significant impact on the atomic arrangement in the lattice. In the system of magnetically hard CoFe2O4 spinel ferrite, the distribution of cations directly affects the magnetic properties of the sample. Through various tests, the behavior of co-precipitation synthesis products at different sintering temperatures was studied, revealing that the lower the sintering temperature, the lower the inversion degree and the more Co ions tend to occupy the tetrahedral sites.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Radiology, Nuclear Medicine & Medical Imaging
John Stroud, Yu Hao, Tim S. Read, Janusz H. Hankiewicz, Pawel Bilski, Krzysztof Klodowski, Jared M. Brown, Keegan Rogers, Josh Stoll, Robert E. Camley, Zbigniew Celinski, Marek Przybylski
Summary: This study explores the pros and cons of using ferrite particles embedded in agar gel phantoms as MRI temperature indicators for low-field scanners. The researchers compare the temperature-dependent intensity of MR images at low-field (0.2 T) and high-field (3.0 T). Despite the lower signal-to-noise ratio, MRI scanners operating at 0.2 T can achieve a temperature measurement uncertainty of about +/- 1.0 degrees C at 37 degrees C for a 90 mu g/mL concentration of magnetic particles.
MAGNETIC RESONANCE IMAGING
(2023)
Article
Nanoscience & Nanotechnology
Jakub Pawlak, Witold Skowronski, Piotr Kuswik, Marta Gajewska, Felix Casanova, Marek Przybylski
Summary: The combination of spin-orbit coupling effects and multiferroic tunneling properties is investigated in Pt/Co/BaTiO3/La2/3Sr1/3MnO3 multilayers. Spin current-induced magnetization precession of Co is observed in the presence of Pt heavy metal. The utilization of a BTO ferroelectric tunnel barrier between Co and LSMO ferromagnetic electrodes leads to both tunneling magnetoresistance and electroresistance. The magnetization dynamics of the Co/Pt bilayers is studied using spin-orbit torque ferromagnetic resonance, revealing the efficient generation of spin current via both the spin Hall effect in Pt and spin pumping in LSMO through the BTO barrier.
ADVANCED ELECTRONIC MATERIALS
(2023)
Article
Environmental Sciences
Jan M. Michalik, Wanda Wilczynska-Michalik, Lukasz Gondek, Waldemar Tokarz, Jan Zukrowski, Marta Gajewska, Marek Michalik
Summary: It has been established that airborne, magnetic nano-and microparticles accumulate in human organs and pose a risk of various diseases. Precise characterization of these particles, including their origins, is crucial in preventing further emission and circulation. A study in Krak & oacute;w collected magnetic atmospheric dust and used various methods to analyze its composition, size, and morphology. The results showed the presence of different minerals and the dominance of iron in the magnetic particles, indicating the presence of nanoparticles.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2023)
Article
Biochemistry & Molecular Biology
Dorota Lachowicz, Angelika Kmita, Marta Gajewska, Elzbieta Trynkiewicz, Marek Przybylski, Stephen E. Russek, Karl F. Stupic, David A. Woodrum, Krzysztof R. Gorny, Zbigniew J. Celinski, Janusz H. Hankiewicz
Summary: Mixed manganese-zinc ferrite nanoparticles coated with PEG were investigated for their potential as temperature-sensitive contrast agents in MRI thermometry. These nanoparticles showed strong thermal dependence of magnetization and were found to have good temperature and spatial resolution when studied using NMR and MRI. The experimental data were compared with calculations using a theoretical model, validating the accuracy of the results.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Materials Science, Multidisciplinary
Katarzyna Szyszka, Nicole Nowak, Robert M. Kowalski, Jan Zukrowski, Rafal J. Wiglusz
Summary: Eu2+ and Eu3+ co-doped strontium phosphate powders were synthesized by a modified Pechini method, and their structural, morphological, and luminescent properties were characterized. It was found that the reduction mechanism of Eu3+ ions is related to the heat treatment process. Additionally, the biocompatibility of the materials was evaluated through cytotoxicity and hemocompatibility tests.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Computer Science, Theory & Methods
Dawid Przyczyna, Maria Szacilowska, Marek Przybylski, Marcin Strzelecki, Konrad Szacilowski
Summary: Reservoir computing with neuromorphic synaptic elements is a successful approach for signal processing and classification. This study presents a simple neuromorphic computing system implemented on the Multisim platform for clustering musical intervals based on their consonant or dissonant character. The results show the potential of using neuromorphic systems for advanced information processing and suggest a neurophysiological basis for the concepts of consonance and dissonance.
INTERNATIONAL JOURNAL OF UNCONVENTIONAL COMPUTING
(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)
