Article
Materials Science, Multidisciplinary
Yuki Yanagi, Hiroaki Kusunose, Takuya Nomoto, Ryotaro Arita, Michi-To Suzuki
Summary: We propose a systematic method for generating symmetry-adapted magnetic structures to analyze complex modulated magnetic structures. The method extends the generation scheme based on multipole expansion, which was previously only applicable for k = 0. By mapping the multipole magnetic alignments to the periodic crystal structure with the phase factor for wave vector k, symmetry-adapted magnetic structures with ordering vector k can be obtained. This method provides all magnetic bases compatible with irreducible representations under a k group for a given crystal structure and wave vector k.
Article
Physics, Multidisciplinary
Noriki Terada, Dmitry D. Khalyavin, Pascal Manuel, Fabio Orlandi, Christopher J. Ridley, Craig L. Bull, Ryota Ono, Igor Solovyev, Takashi Naka, Dharmalingam Prabhakaran, Andrew T. Boothroyd
Summary: According to previous theoretical work, researchers have discovered that the binary oxide CuO can become a room-temperature multiferroic material by applying pressure. They confirmed this by neutron diffraction, showing that the multiferroic phase in CuO can reach 295 K with the application of 18.5 GPa pressure. They also developed a spin Hamiltonian based on density functional theory and employing superexchange theory, which was able to reproduce the experimental results. This study provides stimulus for developing room-temperature multiferroic materials using alternative methods, such as epitaxial strain, based on existing low temperature compounds, for tunable multifunctional devices and memory applications.
PHYSICAL REVIEW LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Matthew J. Cliffe, Oscar Fabelo, Laura Canadillas-Delgado
Summary: Metal thiocyanate perovskite-analogues are a promising class of materials that may exhibit interesting magnetic properties. In this study, we investigated the magnetic properties of a metal thiocyanate framework Cr[Bi(SCN)(6)]·xH(2)O and found that it undergoes long-range magnetic order at low temperature. The unique structure and frustrated antiferromagnetic interactions of this material suggest that further exploration in the design of metal thiocyanate perovskite-analogue structures may lead to the discovery of novel frustrated magnetism.
Article
Chemistry, Inorganic & Nuclear
Matthew S. Chambers, Dean S. Keeble, Dean Fletcher, Joseph A. Hriljac, Zoe Schnepp
Summary: The sol-gel synthesis of iron carbide nanoparticles involves the formation of multiple intermediate crystalline phases, with challenges in controlling particle size. Understanding the evolution of the system during synthesis is crucial for the wide range of applications of Fe3C nanoparticles. The importance of intermediate phases in controlling particle size has been demonstrated in this study, which is the first example of in situ total scattering analysis of a sol-gel system.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Inorganic & Nuclear
Rajesh Tripathi, Dmitry Khalyavin, Shivani Sharma, Devashibhai Thakarshibhai Adroja, Zakir Hossain
Summary: The antiferromagnetic phase transition of Ce(Cu1-xCox)(2)Ge-2 system was investigated, showing a reduction in Ce moment size with Co-doping but no change in magnetic structure. An incommensurate magnetic propagation vector was observed for x = 0.05, while for x = 0.2, there was no long-range magnetic ordering. These results indicate reduced ordered state magnetic moments of Ce3+ ion by Kondo screening and the presence of short-range magnetic correlations.
Article
Physics, Applied
S. M. Bleser, R. M. Greening, M. J. Roos, L. A. Hernandez, X. Fan, B. L. Zink
Summary: Spin-to-charge conversion is a crucial process in spintronics, and this study demonstrates effective spin-to-charge conversion in thermally evaporated chromium thin films. Comparisons with sputtered Pt films show comparable conversion effects, and the opposite sign of the signal indicates a negative spin Hall angle for chromium. The study also reveals the influence of strain state on the conversion efficiency and suggests the possible impact of spin density wave antiferromagnetism in chromium.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
R. Waite, F. Orlandi, D. A. Sokolov, R. A. Ribeiro, P. C. Canfield, P. Manuel, D. D. Khalyavin, C. W. Hicks, S. M. Hayden
Summary: The tetragonal heavy-fermion compound CeAuSb2 undergoes a first-order transition to a spin-density wave (SDW) state under uniaxial stress, resulting in a change in the magnetic structure and a loss of spatial inversion in the metallic system.
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
Chemistry, Multidisciplinary
Hiroshi Mizoguchi, Sang-Won Park, Hideo Hosono
Summary: Transition metals, including platinum group carbonyl complexes, are important catalysts with theoretical and practical value, successfully applied in many organic synthesis reactions and reactions of oxidizing olefin compounds.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Electrochemistry
Meng-Chien Wang, Ching-Ray Chang
Summary: This article firstly reviews the GKA rules and its application in magnetic materials, and then investigates the interlayer magnetic coupling in CrI3/MoTe2/CrI3 heterostructure using first principle calculation.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Chemistry, Physical
Brian C. Sales, William R. Meier, David S. Parker, Li Yin, Jiaqiang Yan, Andrew F. May, Stuart Calder, Adam A. . Aczel, Qiang Zhang, Haoxiang Li, Turgut Yilmaz, Elio Vescovo, Hu Miao, Duncan H. Moseley, Raphael P. Hermann, Michael A. . McGuire
Summary: The kagome metal CoSn has been studied and shown to have flat electronic bands, but electronic instabilities are not realized due to the complete filling of the bands. By replacing Sn with In in CoSn1-xInx, the chemical potential is moved into the flat band region, resulting in the emergence of antiferromagnetic order. This work provides clear evidence that chemically manipulating flat bands in bulk crystals can control correlated ground states.
CHEMISTRY OF MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Hur Abbas, K. Nadeem, J. Hester, M. F. Pervez, S. Yick, M. Kostylev, Ilse Letofsky-Papst, B. Ali, C. Ulrich, H. Krenn
Summary: This study reports the competing magnetic states between superparamagnetic blocking and Neel transition states in 14 nm core-shell NiO nanoparticles. An interesting M-H loop splitting attributed to slow spin relaxation was observed at a crossover temperature, which is particle size dependent and suppressed for diameters above and below 14 nm.
Article
Physics, Applied
I Shivaraja, Shidaling Matteppanavar, P. S. R. Krishna, Sudhindra Rayaprol, P. D. Babu, V. Jagadeesha Angadi, S. P. Kubrin, Basavaraj Angadi
Summary: The study reports on high-temperature crystallographic structure, magnetic and physical properties of chemically B-site disordered PBFW solid solutions, showing a strong spin-lattice coupling around the antiferromagnetic phase transition temperature and presence of magnetoelectric coupling near the ferroelectric transition temperature. Additionally, nanoclusters of PBFW exhibit ferrimagnetic and antiferromagnetic order, supported by EPR and Mossbauer spectroscopic studies which indicate Fe+3 state and B-site disorderliness.
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
(2021)
Article
Chemistry, Multidisciplinary
Seyed Sepehr Mohajerani, Francesco Ricci, Fredrik L. Nordstrom
Summary: The binary T-X phase diagram of salicylic acid and benzoic acid was experimentally determined, showing two crystalline solid solutions with solid-state miscibility limits of 10.9 mol% and 82.5 mol% benzoic acid in salicylic acid at 25 degrees Celsius. The eutectic composition of 60.0 mol% benzoic acid in salicylic acid at a eutectic temperature of 112.69 degrees Celsius was also determined. Non-linearity in the Tammann plot was observed due to the temperature dependence of the solvus and compositional non-uniformity in the material.
Article
Physics, Multidisciplinary
Qiang Zhang, Satoshi Okamoto, German D. Samolyuk, Matthew B. Stone, Alexander Kolesnikov, Rui Xue, Jiaqiang Yan, Michael A. McGuire, David Mandrus, D. Alan Tennant
Summary: The study of magnetic Weyl semimetal Co3Sn2S2 reveals its highly anisotropic magnetic properties and the presence of Weyl points in different temperature regions. Using density functional theory calculations, it is shown that the important role of the 120-degree antiferromagnetic order in supporting Weyl points in the intermediate temperature region.
PHYSICAL REVIEW LETTERS
(2021)
Article
Physics, Condensed Matter
Gaurav Chandra Pandey, Yixi Su, Chandana Rath
Summary: The structural and magnetic properties of NiCr1.7Fe0.3O4 nanoparticles synthesized by a coprecipitation method were investigated using temperature-dependent X-ray diffraction, neutron scattering with XYZ polarizations, and magnetic measurements. The nanoparticles exhibited different crystal phase structures at various temperatures, with a ferrimagnetic magnetic phase and absence of spin-spiral ordering observed. Additionally, exchange bias and the origin of exchange bias were discussed based on different phenomenological models.
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
(2021)
Article
Biology
David W. Hawman, Kimberly Meade-White, Jacob Archer, Shanna S. Leventhal, Drew Wilson, Carl Shaia, Samantha Randall, Amit P. Khandhar, Kyle Krieger, Tien-Ying Hsiang, Michael Gale, Peter Berglund, Deborah Heydenburg Fuller, Heinz Feldmann, Jesse H. Erasmus
Summary: Despite efforts to control the SARS-CoV2 pandemic, the virus continues to spread with the emergence of new variants. Existing vaccines may have reduced effectiveness against these variants, leading to the development of second-generation vaccines. A study evaluated an RNA vaccine that can target multiple variants and showed promising results in mice and hamsters.
Article
Physics, Condensed Matter
G. A. Stewart, G. N. Iles, R. A. Mole, Z. Yamani
Summary: The inelastic neutron scattering spectra recorded in this study and elsewhere provide a useful set of crystal-field energy levels for the ground J = 6 term of Ho3+ in HoFeO3. The resolution of the low-energy, temperature-dependent pseudo-quadrupole ground state splitting and magnon peaks is consistent with the self-ordering of the Ho3+ sublattice at T (Ho) similar to 8-10 K and supports earlier electron spin resonance investigations of the Ho3+ magnon behaviour. Systematic analysis of the grouped singlet CF levels of Ho-3: HoFeO3, in conjunction with the CF Kramers doublet levels of the neighbouring Er3+: ErFeO3, has yielded possible sets of CF parameters for the two systems.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2023)
Article
Medicine, General & Internal
David W. Hawman, Kimberly Meade-White, Chad Clancy, Jacob Archer, Troy Hinkley, Shanna S. Leventhal, Deepashri Rao, Allie Stamper, Matthew Lewis, Rebecca Rosenke, Kyle Krieger, Samantha Randall, Amit P. Khandhar, Linhue Hao, Tien-Ying Hsiang, Alexander L. Greninger, Michael Gale Jr, Peter Berglund, Deborah Heydenburg Fuller, Kyle Rosenke, Heinz Feldmann, Jesse H. Erasmus
Summary: The emergence of the SARS-CoV-2 Omicron variant has led to a resurgence of COVID-19 cases worldwide, as it is less sensitive to protective antibodies from previous infections and vaccines. This variant has the ability to spread even among vaccinated populations. Therefore, there is a need for updated vaccines that can provide protection against the B.1.1.529 variant.
Article
Chemistry, Physical
Gail N. Iles, Will P. Gates, Jose E. M. Pereira, Anton P. J. Stampfl, Laurence P. Aldridge, Heloisa N. Bordallo
Summary: The capacity of clay minerals to store water is important for various applications on Earth and potentially on Mars. The behavior of water within clay minerals remains poorly understood, particularly at subzero temperatures. This study utilized neutron spectroscopy and spectral analysis to investigate the interaction between water and clay minerals. The results provide insights into the mechanism of water ice bonding and separation within clay interlayers, as well as the differences in ice forms depending on hydration levels.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Multidisciplinary
Kunya Yang, Hong Wu, Zefang Li, Chen Ran, Xiao Wang, Fengfeng Zhu, Xiangnan Gong, Yan Liu, Guiwen Wang, Long Zhang, Xinrun Mi, Aifeng Wang, Yisheng Chai, Yixi Su, Wenhong Wang, Mingquan He, Xiaolong Yang, Xiaoyuan Zhou
Summary: By combining thermal transport measurements with density functional theory calculations, this study demonstrates low thermal conductivity (kappa) of approximately 1 W m(-1) K-1 in a typical layered van der Waals ferromagnet Cr2Si2Te6. The low kappa is attributed to the spin-phonon scattering and resonant magnon-phonon scattering, which can be strongly suppressed by magnetic fields. The theoretical approach used in this study may provide a generic understanding of spin-phonon scattering in various systems.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Sijie Hao, Wentao Jin, Zbigniew Bukowski, Zhengwang Lin, Yinguo Xiao, Yixi Su
Summary: The magnetic order in Eu(Fe1-xNix)2As2 crystals is studied using polarized neutron diffraction. The Fe and Eu magnetic sublattices are found to be almost decoupled. The Eu sublattice undergoes a dramatic change in its magnetic ground state with Ni doping, transitioning from an A-type antiferromagnetic order to a canted ferromagnetic order. The lack of superconductivity in Eu(Fe1-xNix)2As2 may be attributed to the formation of in-plane ferromagnetism.
Article
Materials Science, Multidisciplinary
C. Stock, B. Roessli, P. M. Gehring, J. A. Rodriguez-Rivera, N. Giles-Donovan, S. Cochran, G. Xu, P. Manuel, M. J. Gutmann, W. D. Ratcliff, T. Fennell, Y. Su, X. Li, H. Luo
Summary: The magnetism and dynamics of the cluster glass phase in PbFe1/2Nb1/2O3 (PFN) are investigated using neutron scattering. The cluster glass phase is characterized by the lack of a preferred direction in the average magnetic spin direction and the gradual increase of the magnetic correlation length with decreasing temperature. Below approximately 50K, the spatial correlations become more short ranged, indicating increasing disorder. Neutron spectroscopy reveals fast fluctuations in the cluster glass phase, with a frequency bandwidth that mimics the correlation length. The destruction of magnetic order and the formation of the cluster glass in PFN are attributed to random molecular fields originating from conflicting interactions between clusters.
Article
Materials Science, Multidisciplinary
A. Samartzis, J. Xu, V. K. Anand, A. T. M. N. Islam, J. Ollivier, Y. Su, B. Lake
Summary: The moment in Nd2Hf2O7 forms a static long-range ordered ground state, a flat, gapped pinch point excitation, and dispersive excitations. These results confirm recent theories predicting that dispersive modes give rise to their own pinch point patterns, observed as half-moons experimentally.
Article
Astronomy & Astrophysics
Brett A. Carter, Gail N. Iles, Rekha Raju, Andoh M. Afful, Ronald Maj, Tam Dao, Michael Terkildsen, Vasily Lobzin, Zahra Bouya, Murray Parkinson, Samantha Le May, Suelynn Choy, Pawel Hordyniec, Barbara Hordyniec, Julie Currie, Tamitha Skov, Ian D. Peake
Summary: Space weather plays a crucial role in the operation of various technological systems and applications. To equip students with the knowledge of how space weather affects their activities, RMIT University developed a Space Weather Prediction Laboratory. The lab provides an introduction to the near-Earth space environment and offers hands-on training in data analysis and communication.
JOURNAL OF SPACE WEATHER AND SPACE CLIMATE
(2022)
Article
Materials Science, Multidisciplinary
Wentao Jin, Sebastian Muehlbauer, Philipp Bender, Yi Liu, Sultan Demirdis, Zhendong Fu, Yinguo Xiao, Shibabrata Nandi, Guang-Han Cao, Yixi Su, Thomas Brueckel
Summary: Small-angle neutron scattering measurements were conducted on the ferromagnetic superconductor EuFe2(As0.8P0.2)2 to investigate the delicate interplay between ferromagnetism and superconductivity. Large ferromagnetic domains were observed below the ferromagnetic ordering temperature TC, and additional scattering signals were found within a small temperature range below TC. These nanometer-scaled domain structures were identified as the result of the domain Meissner state, which is formed by the competition between ferromagnetism and superconductivity.
Article
Physics, Multidisciplinary
Qianhui Xu, Yi Liu, Sijie Hao, Jiahui Qian, Cheng Su, Chin-Wei Wang, Thomas Hansen, Zhendong Fu, Yixi Su, Wei Li, Guang-Han Cao, Yinguo Xiao, Wentao Jin
Summary: The ground-state magnetic structures of Eu2+ spins in RbEu(Fe1-xNix)(4)As-4 superconductors have been studied using neutron powder diffraction measurements. It is observed that the magnetic propagation vector of the Eu sublattice diminishes with increasing Ni doping, leading to a reduction in the rotation angle between neighboring Eu layers. The magnetic structure transitions from a helical modulation to a collinear ferromagnetic structure as the superconductivity is suppressed.
PHYSICAL REVIEW RESEARCH
(2022)
Article
Materials Science, Multidisciplinary
Zhen Ma, Zhao-Yang Dong, Jinghui Wang, Shuhan Zheng, Kejing Ran, Song Bao, Zhengwei Cai, Yanyan Shangguan, Wei Wang, M. Boehm, P. Steffens, L. -P. Regnault, Xiao Wang, Yixi Su, Shun-Li Yu, Jun-Ming Liu, Jian-Xin Li, Jinsheng Wen
Summary: The study explores the disorder effect in quantum spin liquids by investigating the magnetic-field dependence of low-energy magnetic excitations in a triangular-lattice frustrated magnet. The results demonstrate the critical role of disorder in broadening the magnetic excitation spectra and mimicking the spin-liquid features in frustrated quantum magnets.
Article
Materials Science, Multidisciplinary
Xinrun Mi, Xiao Wang, Hengrui Gui, Maocai Pi, Tingting Zheng, Kunya Yang, Yuhan Gan, Peipei Wang, Alei Li, Aifeng Wang, Liyuan Zhang, Yixi Su, Yisheng Chai, Mingquan He
Summary: The study shows that single-crystalline alpha-RuCl3 exhibits dielectric anomaly and field-induced intermediate phase, with stacking faults affecting the electrical and magnetic properties of samples, providing potential application value in studying alpha-RuCl3 thin-film devices.
Article
Materials Science, Multidisciplinary
Li-Chuan Zhang, Fengfeng Zhu, Dongwook Go, Fabian R. Lux, Flaviano Jose dos Santos, Samir Lounis, Yixi Su, Stefan Bluegel, Yuriy Mokrousov
Summary: This paper demonstrates the distinction of magnitudes of Dzyaloshinskii-Moriya and Kitaev interactions in two-dimensional materials, with a focus on magnonic transport properties. It reveals nontrivial magnonic topological properties in honeycomb ferromagnets and the significant impact of a magnetic field on magnonic topological transport properties.
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)
