Article
Physics, Applied
Michele Petrecca, Beatrice Muzzi, Stefano Maria Oliveri, Martin Albino, Nader Yaacoub, Davide Peddis, Cesar de Julian Fernandez, Claudia Innocenti, Claudio Sangregorio
Summary: The article discusses the exploitation of exchange coupling between hard and soft magnetic materials to enhance the magnetic performance of rare-earth free permanent magnets. It reports the synthesis of nanometric SFO and zinc-doped ferrite composites through scalable and eco-friendly approaches. Despite promising results in forming exchange coupled composite at 1100 degrees C, there was no improvement in energy product, indicating a need for further experimental efforts.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Materials Science, Ceramics
H. Jalili, B. Aslibeiki, A. Hajalilou, O. Musalu, L. P. Ferreira, M. M. Cruz
Summary: Recent studies have demonstrated the importance of the chemical composition and shape of magnetic nanoparticles in determining their properties. In this study, we synthesized cube-like nanoparticles and bimagnetic nanocomposites using an eco-friendly co-precipitation method. The nanocomposites exhibited good exchange-coupling interaction between the hard and soft magnetic phases, resulting in enhanced saturation magnetization. These materials showed promise for use in magnetic hyperthermia.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Applied
Nuchjaree Salidkul, Wiyada Mongkolthanaruk, Kajornsak Faungnawakij, Supree Pinitsoontorn
Summary: A method to fabricate hard magnetic membranes based on bacterial cellulose (BC) matrix and magnetically hard phase barium ferrite (BFO) nanoparticles was proposed. The nanocomposites exhibited improved tensile strength and modulus at low BFO concentration, increased magnetization with BFO content, high flexibility upon bending, and sensitivity to external magnetic fields. Unlike other magnetic BC membranes, BC/BFO nanocomposites demonstrated hard magnetic properties, retaining their magnetic attraction after being magnetized by a permanent magnet, opening up possibilities for applications in various fields.
CARBOHYDRATE POLYMERS
(2021)
Article
Engineering, Electrical & Electronic
Ching-Chien Huang, Shih-Hao Lin, Chin-Chieh Mo, Tsung-Han Hsiao, Yen-Hua Tai, Yung-Hsiung Hung, Chun-Hao Chiu, H. -H. Hsu, C. -H. Cheng
Summary: In this study, an experiment was conducted to investigate the preparation conditions of anisotropic Fe-deficient M-type Ca-Sr-La system ferrite using Fe2O3 from steel industrial iron oxide waste. The study successfully produced high magnetic performance hard magnets with low cobalt content, recycled from steel industrial waste, for potential use in high-efficiency motors.
IEEE TRANSACTIONS ON MAGNETICS
(2021)
Article
Materials Science, Ceramics
Junpeng Wu, Shijun Dong, Huan Li, Hui Zheng, Qiong Wu, Peng Zheng, Liang Zheng
Summary: In this study, high-valence molybdenum (Mo6+) was doped into M-type hexagonal barium ferrite (BaFe12-xMoxO19) to improve its electromagnetic performance. The results showed that the Mo6+ doping concentration had a significant impact on the crystallographic structure, morphology, and electromagnetic properties of the material. The microwave absorption properties were notably improved by the doping Mo6+, demonstrating its potential application as an absorbing material.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Rebeca Ibarra, Edouard Lesne, Bushra Sabir, Jacob Gayles, Claudia Felser, Anastasios Markou
Summary: This work reports the structural, magnetic, and magnetotransport properties of crystalline hexagonal Heusler MnPtGa epitaxial thin films. The MnPtGa films exhibit preferential perpendicular magnetic anisotropy below the Curie temperature and undergo a spin reorientation transition at lower temperatures. The anomalous Hall conductivity of the films shows a nonmonotonic behavior as a function of temperature.
ADVANCED MATERIALS INTERFACES
(2022)
Article
Chemistry, Physical
Yicheng Feng, Jun Zheng, Zigang Deng, Wuyang Lei, Zili Wang
Summary: A double-layer double quasi-Halbach guideway has been designed to reduce dependence on rare-earth materials and lower costs. It utilizes 35% less NdFeB than traditional guideways and maintains comparable levitation and guidance capabilities.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
J. K. Han, A. A. Baker, J. R. I. Lee, S. K. McCall
Summary: Exchange coupling in a model core-shell system is demonstrated as a step towards 3D exchange spring magnets. High-quality core-shell nanoparticles of Ni@CoFe2O4 were fabricated using a simple two-step method. The microstructural quality was validated using TEM, confirming a well-defined interface between the core and the shell. Results showed a strongly temperature-dependent two-phase magnetic hysteresis loop, indicating a coupling of approximately 50% between the core and the shell. Element-specific XMCD hysteresis confirmed the presence of exchange coupling, suppressing the superparamagnetism of the Ni core at room temperature, and achieving a coercivity of >6 kOe at 80 K. These findings provide a pathway for the development of heterostructured metal-oxide exchange-coupled nanoparticles with improved maximum energy product.
Article
Chemistry, Physical
A. A. Markov, S. S. Nikitin, B. Politov, E. Shalaeva, A. P. Tyutyunnik, I. A. Leonidov, M. Patrakeev
Summary: The structure, oxygen non-stoichiometry, and defect equilibrium in perovskite-type Sr1-xCexFeO3-delta were studied, revealing the significant impact of cerium substitution on the structure and oxygen content of the oxide, as well as the higher concentration of Ce3+ ions compared to Fe3+ under reducing conditions.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Jeong Eun Park, Seung Hyuk Kwon, Qi Lu, Hyoung Jin Choi, Jeong Jae Wie
Summary: In this study, a significant improvement in the magnetic actuation of triangular micropillars using composite magnetic particles is reported. A minute and optimal amount of hard magnetic gamma-ferrite nanorods are hybridized with soft magnetic iron microspheres to generate synergistic effects of magnetic coupling and percolation phenomenon on the magnetic actuation of polymer composites. This hybrid approach can help in designing material constituents for effective magnetic actuators and robotic systems that can sensitively respond to an external magnetic field.
Article
Materials Science, Ceramics
Shuang Zhang, Chunxiang Cao, Shubing Su, Ailin Xia, Huiyan Zhang, Hailing Li, Zhiyuan Liu, Chuangui Jin
Summary: Anisotropic exchange coupling interaction was observed in sintered oblate cylindrical SrFe12O19 specimens synthesized via a hydrothermal method. The exchange coupling interaction occurred between hard-hard magnetic grains in both as-pressed and sintered samples. However, this interaction was only found in the in-plane direction and not in the out-of-plane direction for the sintered specimens. The anisotropy was attributed to the vertically arranged plate-like SrM grains with micrometer width and nanometer thickness, as confirmed by cross-sectional morphologies of fractured specimens.
JOURNAL OF ADVANCED CERAMICS
(2023)
Article
Materials Science, Multidisciplinary
Si-Yun Shen, Hui Zheng, Peng Zheng, Qiong Wu, Jiang-Xia Deng, Zhi-Hua Ying, Liang Zheng
Summary: Research on the calcination conditions of barium ferrite powder shows that low temperature and long holding time are beneficial for obtaining homogeneous grain size and excellent magnetic properties.
Article
Chemistry, Multidisciplinary
Yurii P. Ivanov, Baran Sarac, Sergey Ketov, Jurgen Eckert, A. Lindsay Greer
Summary: In the search for rare-earth-free alternatives, successful high-temperature synthesis of tetragonal tetrataenite Fe-Ni alloy has been achieved. Compared to the ultra-slow cooling formation in meteorites, this material can be rapidly prepared using industrially practicable high cooling rates.
Article
Chemistry, Physical
Bin Xie, Xiaoyuan Zhou, Wei Chen, Lining Fan, Lixin Zhang, Runqiu Li, Hui Zheng, Qiong Wu, Yanhui Wu, Yaning Lin, Peng Zheng, Liang Zheng, Yang Zhang
Summary: In this study, aluminum-substituted hexagonal barium ferrite films (BaFe((12-x))AlxO(19)) with different substituting concentrations (x = 0, 1.5, 2, 2.5, 3) were deposited on Al2O3 substrate using pulsed laser deposition. A high remanence ratio of 95% was achieved for the BaFe((12-x))AlxO(19) film at x = 3, along with a high anisotropy field (27.7 kOe), low saturation magnetization (1758 G), and appropriate ferromagnetic resonance linewidth (approximately 436 Oe), making it suitable for self-biased microwave devices.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Nanoscience & Nanotechnology
Yang Zhang, Wenlong Si, Rong Yu, Jing Zhu
Summary: The study demonstrates the crucial role of interfacial reconstruction in modulating the microstructures and properties of heterostructures, revealing the mechanisms through atomic-resolution imaging and spectroscopy. The reported reconstruction implies the importance of polyhedral and electronic flexibility in the formation of reconstructions and offers possibilities for constructing more functional heterostructures in the future.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Engineering, Electrical & Electronic
Heike Bartsch, Sebastian Thiele, Jens Mueller, Dirk Schabbel, Beate Capraro, Timmy Reimann, Steffen Grund, Jorg Toepfer
MICROELECTRONICS INTERNATIONAL
(2020)
Article
Materials Science, Ceramics
Timmy Reimann, Beate Capraro, Heike Bartsch, Joerg Toepfer
Summary: The sintering behavior and magnetic properties of Ni-Cu-Zn ferrites were studied, revealing that shrinkage shifts to lower temperature with increasing Cu content. The addition of Bi(2)O(3) sintering aid enhances the sintering shrinkage. The fabricated ferrites exhibit good performance at high temperatures.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2021)
Article
Geochemistry & Geophysics
Toru Matsumoto, Takaaki Noguchi, Yu Tobimatsu, Dennis Harries, Falko Langenhorst, Akira Miyake, Hiroshi Hidaka
Summary: The alteration of iron sulfides on the lunar surface by space weathering remains poorly understood. However, through SEM and TEM observations, it has been determined that the space weathering of iron sulfides may be directly related to solar wind irradiation.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2021)
Article
Instruments & Instrumentation
H. P. Liermann, Z. Konopkova, K. Appel, C. Prescher, A. Schropp, V Cerantola, R. J. Husband, J. D. McHardy, M. McMahon, R. S. McWilliams, C. M. Pepin, J. Mainberger, M. Roeper, A. Berghaeuser, H. Damker, P. Talkovski, M. Foese, N. Kujala, O. B. Ball, M. A. Baron, R. Briggs, M. Bykov, E. Bykova, J. Chantel, A. L. Coleman, H. Cynn, D. Dattelbaum, L. E. Dresselhaus-Marais, J. H. Eggert, L. Ehm, W. J. Evans, G. Fiquet, M. Frost, K. Glazyrin, A. F. Goncharov, H. Hwang, Zs Jenei, J. Y. Kim, F. Langenhorst, Y. Lee, M. Makita, H. Marquardt, E. E. McBride, S. Merkel, G. Morard, E. F. O'Bannon, C. Otzen, E. J. Pace, A. Pelka, J. S. Pigott, V. B. Prakapenka, R. Redmer, C. Sanchez-Valle, M. Schoelmerich, S. Speziale, G. Spiekermann, B. T. Sturtevant, S. Toleikis, N. Velisavljevic, M. Wilke, C. S. Yoo, C. Baehtz, U. Zastrau, C. Strohm
Summary: The high-precision X-ray diffraction setup for diamond anvil cells at the European XFEL High Energy Density instrument is described, including beamline optics, sample positioning, and detector systems in the multipurpose vacuum chamber. Concepts for pump-probe X-ray diffraction experiments in the DAC are discussed and demonstrated through X-ray heating and diffraction of Bi under pressure. The results are interpreted using finite element modeling of the sample chamber in the DAC.
JOURNAL OF SYNCHROTRON RADIATION
(2021)
Article
Chemistry, Inorganic & Nuclear
Christoph Priese, Joerg Toepfer
Summary: The study investigates the effect of stoichiometry and Fe-deficiency on the properties of Ni-Cu-Zn ferrites, and observes phase formation, microstructure changes, and permeability variations under different sintering temperatures and compositions.
Article
Geology
Agnese Fazio, Luigi Folco, Falko Langenhorst
Summary: This study reports on a shock-related phenomenon observed in impact melt masses from the Kamil crater in Egypt, where skeletal quartz aggregates are formed from silica-rich fluids. The formation of these aggregates is closely related to the presence of water and impurity-rich heterogeneities in the precursor quartz.
Article
Geochemistry & Geophysics
Arianna E. Gleason, Sulgiye Park, Dylan R. Rittman, Alessandra Ravasio, Falko Langenhorst, Riccardo M. Bolis, Eduardo Granados, Sovanndara Hok, Thomas Kroll, Marcin Sikorski, Tsu-Chien Weng, Hae Ja Lee, Bob Nagler, Thomas Sisson, Zhou Xing, Diling Zhu, Gabriele Giuli, Wendy L. Mao, Siegfried H. Glenzer, Dimosthenis Sokaras, Roberto Alonso-Mori
Summary: By using time-resolved in situ X-ray diffraction, researchers have studied the phase transformation pathway of plagioclase during shock compression. They found that direct amorphization occurs at much lower pressures than previously assumed, and upon release, the material partially recrystallizes back into the original structure, demonstrating a memory effect.
METEORITICS & PLANETARY SCIENCE
(2022)
Article
Chemistry, Physical
Beate Capraro, Manuel Heidenreich, Joerg Toepfer
Summary: This study investigates the sintering behavior of CT708 LTCC tapes with a large coefficient of thermal expansion. The results show that at a sintering temperature of 836 degrees C, the tapes exhibit maximum shrinkage with a density of 95%, making them suitable for cofiring with functional ceramic layers.
Article
Geochemistry & Geophysics
L. Pellegrino, L. Menegon, S. Zanchetta, F. Langenhorst, K. Pollok, S. Tumiati, N. Malaspina
Summary: The study reconstructs the metamorphic and deformation evolution of pyroxenites in the Ulten Zone in the Eastern Alps, Northern Italy. Mineral deformation in pyroxenites occurred through different processes, including dislocation creep and diffusion creep mechanisms. The data indicate a transition in deformation mechanism from dislocation to diffusion creep, which resulted in a significant rheological weakening of pyroxenites.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2021)
Article
Microbiology
Marie Harpke, Sebastian Pietschmann, Flavio Silva Costa, Clara Gansert, Falko Langenhorst, Erika Kothe
Summary: Microbial communities in a former uranium mining site in Germany were screened for strains that can survive high salt and metal concentrations. These strains mainly rely on the formation of strontium- or cesium-struvite minerals to resist the toxic effects of metals and salt.
Article
Multidisciplinary Sciences
Christoph Otzen, Hanns-Peter Liermann, Falko Langenhorst
Summary: When impacted, quartz undergoes a sudden transformation into glass lamellae, known as planar deformation features (PDFs). PDFs are reliable indicators of impacts and play a crucial role in identifying catastrophic collisions like the Chicxulub impact in the Earth's record. However, there is still no consensus on the formation of PDFs. In this study, we present time-resolved in-situ synchrotron X-ray diffraction data of single-crystal quartz rapidly compressed in a dynamic diamond anvil cell. Our experiments provide evidence for the transformation of quartz into a metastable rosiaite-type high-pressure phase, and the collapse of this phase during decompression leads to amorphous lamellae similar to naturally shocked quartz.
NATURE COMMUNICATIONS
(2023)
Article
Geochemistry & Geophysics
Christopher Hamann, Kosuke Kurosawa, Haruka Ono, Toshihiro Tada, Falko Langenhorst, Kilian Pollok, Hidenori Genda, Takafumi Niihara, Takaya Okamoto, Takafumi Matsui
Summary: Knowledge of the shock behavior of planetary materials is crucial for understanding shock metamorphism in various geological contexts. This study investigates the effects of friction and plastic deformation on shock metamorphism in granite through shock-recovery experiments and numerical modeling. The results reveal a progressive shock metamorphism in granite that is consistent with existing classification schemes. However, the study also identifies the formation of highly localized melt veins at lower peak pressures than previously thought, and the presence of high-pressure silica polymorph stishovite in quartz grains. These findings contribute to our understanding of impact processes and the formation of melt veins with high-pressure polymorphs in shocked terrestrial impactites or meteorites.
JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS
(2023)
Biographical-Item
Geochemistry & Geophysics
Wolf Uwe Reimold, Natasha Artemieva, Lutz Hecht, Thomas Kenkmann, Falko Langenhorst, Knut Metzler, Kai Wuennemann
METEORITICS & PLANETARY SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Jiangkun Cao, Yicong Ding, Minghui Sun, Roman Sajzew, Falko Langenhorst, Lothar Wondraczek
Summary: An intense ultrasound-induced luminescence (USL) is obtained from Cr3+-activated glass-ceramic composites, which are fabricated by direct precipitation of nanoscale ZnGa2O4 from silicate melts upon cooling. The USL band overlaps with the first near-infrared transmission window of biological tissue and extends into the visible red spectral range, making it suitable for visible data encryption, labeling, and photophysical stimulation using non-optical energy source. The spectroscopic performance of the composites is similar to phase-pure ZnGa2O4, and the fabrication process results in a robust, dense, and biocompatible composite without the need for secondary encapsulation.
ADVANCED PHOTONICS RESEARCH
(2023)
Article
Materials Science, Ceramics
T. Reimann, S. Froehlich, A. Bochmann, A. Kynast, M. Toepfer, E. Hennig, J. Toepfer
Summary: Sintering under low oxygen partial pressure results in dense and fine-grained microstructures with low dielectric losses for KNNLT ceramics, while achieving a high normalized strain coefficient at high voltage. However, samples reoxidized at very low oxygen partial pressure exhibit increased dielectric losses and leakage currents.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
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)
