Article
Materials Science, Multidisciplinary
Akhila Priya Kotti, Rahul Sahu, Amaresh Chandra Mishra
Summary: The magnetization reversal mechanism and stable remanent states of truncated conical nanowires with high aspect ratio are investigated using micromagnetic simulation. The axial magnetization reversal is mainly driven by domain wall motion, which is hindered by increasing tapering of the nanowire. The remanent state shows a homogeneous magnetization throughout the nanowire, except at the ends where vortex states appear for near cylindrical nanowires and a flower state is exhibited for nanowires with small top radius. The control of magnetization reversal is achieved by restricting the movement of domain wall through a tapered end with flower configuration.
JOURNAL OF MATERIALS SCIENCE
(2023)
Article
Chemistry, Physical
Kaige Tian, Lan Wu, Huan Chai, Lili Gao, Meng Wang, Huilin Niu, Li Chen, Jun Jin
Summary: In order to improve the electron-hole recombination rate and water oxidation reaction kinetics in photoelectrochemical (PEC) water splitting, we prepared Ni2P2O7-Nd-BiVO4 composite photoanodes through photo-assisted electrodeposition. The Ni2P2O7-Nd-BiVO4 photoanode exhibited a high photocurrent density at 1.23 reversible hydrogen electrode (RHE) and the Ni2P2O7 co-catalyst played multiple roles in accelerating hole migration, inhibiting electron recombination, and improving water oxidation kinetics. This work provides ideas for the design and study of efficient BiVO4-based photoanodes.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
A. Oraon, T. Adhikary, M. Tirugabathina, B. Kumar, S. Ghosh, S. Aich
Summary: The effect of Boron (B) and Silicon (Si) addition on the hard magnetic properties of rapidly quenched Zr-Co ribbons was investigated. It was found that the addition of small amounts of Boron effectively reduces the grain size and significantly increases coercivity. On the other hand, the introduction of Silicon increases the coercivity but slightly decreases the magnetization. The annealing temperature above 650 degrees C leads to an increase in the soft magnetic phases and a decrease in the hard magnetic phase. The Co79Zr13V5B1Si2 ribbons annealed at 650 degrees C showed the highest coercivity (6.14 kOe) and magnetic energy product (6.14 MGOe) with fine and uniform grain structure.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Physics, Applied
Ananya Renuka Balakrishna, Richard D. James
Summary: The study reveals that the reduction in hysteresis of Permalloy is related to specific values of magnetostriction and anisotropy constants, which are balanced at the particular composition Fe21.5Ni78.5, resulting in a significant decrease in hysteresis.
APPLIED PHYSICS LETTERS
(2021)
Article
Materials Science, Multidisciplinary
M. Xu, S. L. Bud'ko, R. Prozorov, P. C. Canfield
Summary: LaCrGe3 is an itinerant, metallic ferromagnet with a remarkable low temperature coercivity associated with micromagnetic/nanocrystalline behavior.
Article
Optics
Mohammad Shahabuddin, David W. Keene, Maxim Durach, Vladimir S. Posvyanskii, Vadim A. Atsarkin, Natalia Noginova
Summary: Permalloy grating-like structures exhibit significant photovoltages in response to pulsed laser light illumination, with enhanced electrical signals at plasmon resonance conditions. The dependence of the signals on the magnetic field with characteristic hysteresis suggests alternative mechanisms beyond laser-induced heating.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Hyo-Bin Ahn, Soon-Gil Jung, Hyungjong Lim, Kwangsu Kim, Sanghoon Kim, Tae-Eon Park, Tuson Park, Changgu Lee
Summary: By substituting Ni for Fe in (Fe1-xNix)(3)GaTe2 crystals, researchers have substantially enhanced the coercive field (H-c) up to 200% while maintaining the ferromagnetic state at room temperature. The highest H-c reported so far is achieved at x = 0.12, reaching 7 kOe. However, at x = 0.68, the ferromagnetic characteristic is almost suppressed and a spin glass state appears.
Article
Materials Science, Multidisciplinary
Pinaki Laha, Bipul Kumar Mahato, Rabindranath Gayen, Subhadeep Datta, Rajdeep Singh Rawat
Summary: This study reports the magnetization reversal mechanism in chain-like structures made of permalloy magnetic nanoparticles. The well-aligned and uniform chains were synthesized using a chemical synthesis method, and it was found that the magnetization reversal is mainly influenced by the spherical vortices and shape anisotropy of the chains.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Environmental Sciences
J. F. Joe Sherin, T. C. Bessy, S. Asha, C. Vijaya Kumar, Dina Huessien, M. R. Bindhu, Rabab Ahmed Rasheed, Khaloud Mohammed Alarjani
Summary: A novel photocatalyst based cobalt doped zinc ferrites nanoparticles (Co-ZnFe2O4 NPs) was prepared and characterized in this study. The results showed that the amorphous ferrites of the samples disappeared with increasing calcinations temperature, affecting the band gap energy and the intensity of photoluminescence peak. Cobalt substitution improved the saturation magnetization and antimicrobial activity of the samples.
ENVIRONMENTAL RESEARCH
(2022)
Article
Materials Science, Multidisciplinary
Anija Mary, Rajesh Kumar Rajan, Senoy Thomas
Summary: The study revealed that symmetric and asymmetric ferromagnetic permalloy nanocaps of 100 nm diameter have different effects on magnetization reversal mechanisms. In symmetric nanocaps, magnetization reversal occurs through coherent rotation of magnetic moments, while in asymmetric nanocaps, magnetization reversal occurs through the formation of a non-uniform C-state.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Madhu Ghanathe, Amit Kumar, Ivan da Silva, S. M. Yusuf
Summary: Through detailed investigations including dc magnetization, ac susceptibility, neutron depolarization, and neutron diffraction studies, the physics of low temperature magnetic transitions in Ho3Fe5O12 have been revealed. The study showed a previously unknown sign reversal of magnetization below T-comp under low magnetic fields, as well as double compensation temperatures under moderate fields leading to double magnetization reversals. A modified Stoner-Wohlfarth model was used to explain the asymmetrical nature of the temperature dependent coercivity data around T-comp. The findings support the existence of two transitions at 138 K (T-comp) and 50 K, with evidence of a deep minimum and a broad peak, respectively.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Ba Myint, Vivian Ng
Summary: The study reports a 3D matrix created by self-alignment of nanowires and 2D antidots, and analyzes the magnetic behaviors within it, revealing the driving mechanisms of different axis magnetization behaviors and the process of domain wall propagation.
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS
(2021)
Article
Engineering, Electrical & Electronic
Xuhang Zhang, Yaqiang Dong, Changjiu Wang, Aina He, Jiawei Li, Fushan Li, Liang Chang, Qiang Chi, Xiaoxue Shui
Summary: The influence of phosphorus content on Fe81.5Si3B10+xP3.5-xC0.2Cu0.8Nb1 alloys has been studied, showing improvements in Curie temperature and saturation magnetic flux density with decreased P content. Optimal magnetic field annealing technique results in amorphous alloys with good soft magnetic properties, indicating the importance of phosphorus content and annealing conditions in enhancing magnetic performance.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Physics, Multidisciplinary
Junaid Ul Ahsan, Harkirat Singh
Summary: In this study, we investigate the Exchange spring nano-bilayer with intermixing of high and low anisotropic moments at the interface and observe the unusual phenomenon of positive exchange bias. Our results show good reproducibility at different simulation temperatures. However, the temperature itself has a significant influence on the shift and width of the M-H loop. We further explain the importance of interface roughness in causing the shift of the Hysteresis loop in Ferromagnetic Hard/Soft nano bilayer systems.
Article
Multidisciplinary Sciences
Omar H. Abd-Elkader, Nasrallah M. Deraz, Lotfi Aleya
Summary: ZnxNi1-xFe2O4 (x = 0 and 0.3) nanoparticles were successfully synthesized using a glycine-mediated combustion route, and their properties were characterized using various methods. The substitution of Ni ions with Zn ions led to changes in lattice parameters, crystallite size, and band widths of the ferrites. The cation distribution and magnetic characteristics of the ferrites were also investigated, showing that Zn0.3Ni0.7Fe2O4 nanoparticles exhibited higher magnetization compared to NiFe2O4 nanoparticles. The anisotropy of the nickel ferrite increased with the substitution of Ni with Zn. TEM analysis revealed the formation of spinel nanocrystalline particles with low agglomerations.
Article
Physics, Multidisciplinary
Dan Liu, Ran Wei, Lin Han, Chen Zhu, Shuai Dong
Summary: In this study, ferroelectricity in a one-dimensional system of double helix SnIP with absorbing water molecules was investigated. The orientation of polarized water molecules in the R2 region of SnIP and the displacement of I atom due to interaction with absorbed water molecules were identified as critical factors for electrical polarization. A plausible scenario for polarization flipping was proposed, involving the rolling-up of water molecules while maintaining their electrical dipole magnitude and changing their direction, along with the reverse displacement of I atoms. The introduction of strain was found to greatly enhance polarization, with up to 26.5% improvement under tensile strain and only 4% degradation under compressive strain. Additionally, strain was found to be correlated with the direct band gap.
Article
Chemistry, Physical
Xiangyu Meng, Qi Zhan, Yanan Wu, Mengmeng Zhu, Ken Liu, Na Wang, Kuibo Yin, Yueming Sun, Shuai Dong, Yunqian Dai
Summary: This study successfully enhances the photoelectrochemical performance by designing a bioinspired ivy-like Fe2O3 heterostructure. The ivy-like Fe2O3 photo-sheets enhance light harvesting, while the oxygen vacancies on Fe(2)O(3) photo-sheets promote reactivity. The tip-edges within the ivy-like Fe2O3 photo-sheets enable a hydrophilic and aerophobic surface, providing a high density of unoccupied active sites. The Fe2O3@TiO2 nanofibers exhibit excellent photocurrent, high donor density, and rapid oxygen production rate.
Article
Chemistry, Physical
Qian Chen, Qingjie Guo, Zhaocong Huang, Bin Fang, Shangkun Li, Weiming Lv, Rongxin Li, Yi Luo, Jun Du, Baoshun Zhang, Ya Zhai, Yaming Fan, Zhongming Zeng
Summary: We present a study on spin-orbit torques (SOTs) generated by ferrimagnetic FeCoTb alloys in spin valve structures. Our results show high-efficient damping-like and field-like torques and a spin Hall conductivity of FeCoTb that surpasses that of conventional heavy metals. The magnetization dependent behavior of the SOTs, possibly originating from the anomalous Hall effect dominated by Tb magnetization, can be controlled by manipulating the magnetic configuration. This study highlights the potential of ferrimagnetic materials for low-power spintronic applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
K. Chen, C. Luo, Y. Zhao, F. Baudelet, A. Maurya, A. Thamizhavel, U. K. Roessler, D. Makarov, F. Radu
Summary: In rare-earth compounds, the proximity of the 4f level to the Fermi energy leads to instabilities of the charge configuration and the magnetic moment. We provide experimental evidence for induced magnetic polarization of the Eu3+ atomic shell due to interactions with the Eu2+ atomic shell. Applying external pressure leads to a transition from antiferromagnetic to fluctuating behavior in EuNiGe3 single crystals, with observed magnetic polarization for both Eu2+ and Eu3+ valence states.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Nanoscience & Nanotechnology
Ning Ding, Kunihiro Yananose, Carlo Rizza, Feng-Ren Fan, Shuai Dong, Alessandro Stroppa
Summary: We studied the magneto-optical Kerr effect (MOKE) in a two-dimensional heterostructure CrI3/In2Se3/CrI3 using density functional theory calculations and symmetry analysis. The mirror and time-reversal symmetries are broken by the spontaneous polarization in the In2Se3 ferroelectric layer and the antiferromagnetic ordering in the CrI3 layers, thereby activating MOKE. Our results demonstrate that the Kerr angle can be reversed by either the polarization or the antiferromagnetic order parameter. This suggests that ferroelectric and antiferromagnetic 2D heterostructures could be utilized for compact information storage devices, with the information encoded by the two ferroelectric or the two time-reversed antiferromagnetic states and read optically via MOKE.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Physics, Applied
Xinyu Yang, Ning Ding, Jun Chen, Ziwen Wang, Ming An, Shuai Dong
Summary: A robust layered antiferromagnetism with a high Neel temperature is predicted in a MXene Cr2CCl2 monolayer, providing an ideal platform for a magnetoelectric field effect transistor. The band splitting between spin-up and spin-down channels can be induced by an electric field, breaking the inversion symmetry between the lower Cr layer and the upper Cr layer. The magneto-optic Kerr effect can detect this magnetoelectricity in a collinear antiferromagnet with zero magnetization.
APPLIED PHYSICS LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Xiangyang Li, Qing-Bo Liu, Yongsen Tang, Wei Li, Ning Ding, Zhao Liu, Hua-Hua Fu, Shuai Dong, Xingxing Li, Jinlong Yang
Summary: By tuning the spin state of organic linkers and the symmetry/topology of crystal lattices, a new class of multifunctional 2D Cr(II) five-membered heterocyclic metal organic frameworks has been predicted. These materials simultaneously possess auxetic effect, room temperature ferrimagnetism, chiral ferroelectricity, electrically reversible spin polarization, and topological nodal lines/points. Exemplified by 2D Cr(TDZ)2, it exhibits topological nodal lines and a quadratic nodal point in the Brillouin zone.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
You Wu, Li Chen, Yixuan Han, Panbo Liu, Haihong Xu, Guanze Yu, Yingying Wang, Tao Wen, Wenbo Ju, Junwei Gu
Summary: In this work, a strategy of efficient utilization of carbon nanotubes (CNTs) in producing CNT incorporated aramid papers is demonstrated. The layer-by-layer self-assembly technique is used to coat the surfaces of meta-aramid fibers and fibrils with CNT, providing novel raw materials available for large-scale papermaking. The hierarchical construction of CNT networks resolves the dilemma of increasing CNT content and avoiding the agglomeration of CNT, which is a frequent challenge for CNT incorporated polymeric composites. The composite paper exhibits a high permittivity and dielectric loss tangent at a low CNT loading, and achieves high-efficiency microwave absorption in the X-band.
Article
Physics, Multidisciplinary
Maryam Sajedi, Chen Luo, Konrad Siemensmeyer, Maxim Krivenkov, Kai Chen, James M. Taylor, Marion A. Flatken, Florin Radu, Oliver Rader
Summary: Lead halide perovskites are new key materials with various applications. Recent reports suggest that doping with Mn can lead to ferromagnetism, but our study shows that significant double exchange and ferromagnetism do not occur in Mn-doped lead halide perovskite thin films. Our results indicate that Mn is not suitable for creating ferromagnetism in lead halide perovskites.
COMMUNICATIONS PHYSICS
(2023)
Review
Multidisciplinary Sciences
Xiaoyan Yao, Di Hu, Shuai Dong
Summary: This review summarizes the recent progress in modulating the magnetic textures in two-dimensional (2D) van der Waals (vdW) materials, including temperature, magnetic field, sample thickness, electric current, electric field, strain, and stacking style.
Article
Quantum Science & Technology
Jin Peng, Xinyu Yang, Ziye Lu, Lin Huang, Xiyu Chen, Miao He, Jingdong Shen, Yu Xing, Meifeng Liu, Zhe Qu, Zhicheng Wang, Linglong Li, Shuai Dong, Jun-Ming Liu
Summary: This study reports the ferromagnetism in a diluted magnetic semiconductor Fe1-xZnxPS3, where weak ferromagnetism emerges at 30% Zn doping. A nearly static ferromagnetic order is observed in highly diluted magnet Fe0.1Zn0.9PS3. X-ray photoemission measurements indicate the introduction of holes and associated Fe3+ in samples with ferromagnetic order. Density functional theory calculations confirm the Ising-type ferromagnetic state in highly diluted compounds with hole doping. The interplay between bound magnetic polarons induces impurity-band-exchange and superexchange interactions that explain the evolution of magnetism with Zn doping. The findings suggest that the magnetic diluted FePS3 system is a candidate for potential applications in magnetic devices, and its quantum mechanism should be explored using microscopic techniques in the near future.
ADVANCED QUANTUM TECHNOLOGIES
(2023)
Article
Nanoscience & Nanotechnology
Yu Wang, Shuai Dong, Xiaoyan Yao
Summary: With the rapid expansion of two-dimensional (2D) magnetic materials, noncollinear topological magnetic textures in 2D materials, known as magnetic bimerons, are increasingly gaining attention. This study predicts that centrosymmetric transition metal halide CoX2 (X = Cl, Br) monolayers are promising candidates for observing frustration-induced bimerons. The bimerons crystallize into a stable triangular lattice under an appropriate magnetic field and have smaller size and more flexible tunability compared to other magnetic structures. The biaxial strain can also be used to tune the bimeron lattice in these materials.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2023)
Article
Chemistry, Physical
Rui Song, Bili Wang, Kai Feng, Jia Yao, Mengjie Lu, Jing Bai, Shuai Dong, Ming An
Summary: With the rise of two-dimensional materials, unique properties that are completely distinct from bulk counterparts continue to emerge, providing a new perspective for the study of transition metal systems.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Ziwen Wang, Yisheng Chai, Shuai Dong
Summary: The concept of topology has been widely applied to condensed matter, and recent breakthroughs have revealed unconventional topological physics in a quadruple perovskite TbMn3Cr4O12. Using density functional theory calculations, the existence of a Roman surface trajectory of magnetism-induced polarization in this material is confirmed. An alternative material is proposed to enhance performance by promoting easily detectable magnetism-induced polarization.
Article
Materials Science, Multidisciplinary
Kaidi Xu, Di Hu, Jun Chen, Haoshen Ye, Lin Han, Shan-Shan Wang, Shuai Dong
Summary: In this study, a unified two-orbital spin-fermion model is established to describe the ferromagnetism in a two-dimensional honeycomb lattice, by connecting the magnetic interactions with the electronic structures. The research finds that the ferromagnetic transition temperature reaches its maximum at the quarter-filled case, and the linear relationship between the ferromagnetic transition temperature and doping concentration provides theoretical guidance for the experimental modulation of two-dimensional ferromagnetism.
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)
