Article
Physics, Applied
Parashu Kharel, Bhubnesh Lama, Matthew Flesche, Zachary Mehlberg, Buddhi Lamsal, Shah Valloppilly, Yue Zhou, David J. Sellmyer, Tula R. Paudel
Summary: MnBi and MnBi-based materials have potential as rare-earth-free permanent magnets with moderate energy product. Adding carbon during the synthesis of MnBi can reduce the residual Bi content and improve its saturation magnetization. Experimental and computational results show that Mn55Bi45C (x) samples have better magnetic properties, possibly due to the coating of MnBi grains with carbon.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Tula R. Paudel, Bhubnesh Lama, Parashu Kharel
Summary: The study demonstrates the possibility of tuning magnetization and magnetocrystalline anisotropy of MnBi by alloying it with elements like Rh, Pd, Li, and O, which are stable and have larger magnetization energy product compared to MnBi. The potential development of high-energy-density magnets based on MnBi, with other favorable properties such as high Curie temperature and earth abundancy of constituent elements, is envisioned.
Article
Materials Science, Multidisciplinary
N. S. Anuraag, S. K. Shaw, Sher Singh Meena, R. K. Singh, N. K. Prasad
Summary: Low temperature phase (LTP) MnBi exhibits positive spontaneous exchange bias (SEB) at room temperature, which can be explained by the pinning of ferromagnetic MnBi spins by localized antiferromagnetic clusters. After ball milling, the coercivity and maximum exchange bias field of the samples are significantly improved. Apart from its use as hard magnets, this phenomenon has potential applications in magnetoresistive random access memory (MRRAM) devices and spintronics.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2022)
Article
Chemistry, Physical
Melek Villanueva, Elena H. Sanchez, Pablo Olleros-Rodriguez, Patricia Pedraz, Paolo Perna, Peter S. Normile, Jose A. De Toro, Julio Camarero, Cristina Navio, Alberto Bollero
Summary: By controlling the growth temperature instead of applying an external magnetic field, the magnetic anisotropy direction in LTP-MnBi thin films was tailored successfully, leading to the growth of quasi-hexagonal micro-islands for the first time. Films with different orientations exhibited distinct magnetic anisotropy properties, with relatively high coercivity values.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Cheoljun Bae, Gyutae Lee, Min Kyu Kang, Hansol Lee, Ki Woong Moon, Jongryoul Kim
Summary: Research found that substitutional Sb element effectively refined grain size of MnBi-LTP bulk magnets, and conventional ball milling process could pulverize powders into fine particles and minimize phase decomposition, resulting in successful fabrication of Mn54Bi45.9Sb0.1 bulk magnet with excellent magnetic properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Automation & Control Systems
Hanane Berkani, Rachid Siab, Wassila Tebib, Locif Redouani, Saida Boukeffa, Mohamed Bououdina
Summary: Through the investigation of Fe15Co2P3 powder mixture's mechanical alloying process, it was found that the crystallite size reached 100 and 200 nm after 3 hours of milling. The mechanical properties revealed the brittleness of the alpha-Fe(P) solid solution compared to the Co75Fe25 phase. In terms of magnetic properties, the hysteresis loss energy and maximum permeability of the milled powders reached minimal values after approximately 1 hour.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Chemistry, Physical
Yang Yang, Jung Tae Lim, Hui-Dong Qian, Jihoon Park, Jong-Woo Kim, Oi Lun Li, Chul-Jin Choi
Summary: The structure and magnetic properties of Fe-doped MnBi alloy with different Fe concentrations were systematically investigated, showing that the addition of Fe can enhance the coercive force and achieve different magnetic performances in ball-milled ribbon and ingot. As the Fe concentration increases, the Curie temperature of the alloy also gradually rises.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Environmental Sciences
Qingying Shi, Saisai Guo, Jingchun Tang, Honghong Lyu, Cholnam Ri, Hongwen Sun
Summary: This study successfully prepared magnetic biochars by ball-milling biochar with Fe3O4 nanoparticles, which showed high efficiency in removing polystyrene nanoparticles (NPs) from water. The magnetic biochars synthesized at different pyrolysis temperatures exhibited improved removal capacity compared to pristine biochars. The best removal efficiency was achieved by MBC500 due to its larger specific surface area and abundant oxygen-containing functional groups. Mechanism analysis indicated that hydrophobicity, electrostatic attraction, H-bonding formation, and 7C-7C conjunction contributed to the adsorption process.
ENVIRONMENTAL POLLUTION
(2023)
Article
Automation & Control Systems
Alexandre Nogueira Ottoboni Dias, Manoel Ribeiro da Silva, Gilbert Silva
Summary: Mechanical ball milling parameters greatly influence the efficiency and particle size reduction in processed aluminum bronze chips. The addition of vanadium carbide (VC) affects the microstructure and magnetic properties. Results show that % VC and milling time are key parameters in improving efficiency and obtaining submicrometric particles.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2021)
Article
Chemistry, Physical
Ondrej Zivotsky, Katerina Skotnicova, Tomas Cegan, Jan Jurica, Lucie Gembalova, Frantisek Zazimal, Ivo Szurman
Summary: Ternary Mn2FeSi alloy was synthesized through mechanical alloying and its structure and lattice parameters were confirmed. The prepared samples exhibited a heterogeneous magnetic structure consisting of a dominant paramagnetic phase and a weak ferro-/ferrimagnetic contribution.
Article
Materials Science, Ceramics
Rafael A. Raimundo, Rayanne S. S. Reinaldo, Nailton T. Camara, Cleber S. Lourenco, Francine A. Costa, Daniel A. Macedo, Uilame U. Gomes, Marco A. Morales
Summary: In this study, Al2O3-10 wt% Fe composite powders were prepared by mechanical alloying with different milling times. The morphology, structure, and magnetic properties were investigated through SEM, XRD, Modssbauer spectroscopy, and magnetic measurements. The results showed a reduction in particle size, crystallite size, and an increase in lattice micro-strain, as well as the presence of a superparamagnetic component.
CERAMICS INTERNATIONAL
(2021)
Article
Engineering, Electrical & Electronic
Cheoljun Bae, Gyutae Lee, Min Kyu Kang, Hansol Lee, Jongryoul Kim
Summary: The study successfully synthesized fine MnBi-LTP particles using cryo-milling process and found that stearic acid, as a surfactant, played a crucial role in suppressing the decomposition of the magnetic phase during cryo-milling. High-purity fine MnBi-LTP particles were obtained, indicating the potential of cryo-milling process in synthesizing MnBi-LTP particles with superior magnetic properties.
IEEE TRANSACTIONS ON MAGNETICS
(2022)
Article
Engineering, Chemical
Purvam Mehulkumar Gandhi, Siva Kumar Valluri, Mirko Schoenitz, Edward Dreizin
Summary: This study investigated the effects of liquid process control agents (PCA) on the properties of milled powders during high-energy ball milling. Correlations between different PCA properties and milling outcomes were identified. It was found that PCA density had an impact on particle and crystallite sizes, but its effect was less significant compared to other parameters. Particle size was strongly correlated with PCA proton affinity and surface tension for Bi2O3 and CuO, respectively, while crystallite size was most strongly correlated with PCA dynamic viscosity and density for Bi2O3 and CuO, respectively.
ADVANCED POWDER TECHNOLOGY
(2022)
Article
Chemistry, Physical
Greta Cavazzini, Francesco Cugini, Davide Delmonte, Giovanna Trevisi, Lucia Nasi, Semih Ener, David Koch, Lara Righi, Massimo Solzi, Oliver Gutfleisch, Franca Albertini
Summary: This study presents a top-down method using ball-milling techniques to prepare micro-meter and sub-micro-meter sized particles of Ni50Mn30Ga20 and Ni50Mn18.5Cu6.5Ga25. The research shows that lattice defects and atomic disorder induced during milling have a detrimental effect on magnetic properties and magneto-structural phase transitions, but can be recovered by subsequent annealing. Furthermore, tuning the particle size can improve magnetic properties, such as phase homogeneity, thermal hysteresis reduction, and saturation magnetization increase.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
J. Vergara, C. Favieres, V Madurga
Summary: Hard magnetic MnBi films were obtained through appropriate heat treatments. Magnetic measurements and MFM confirmed the correlation between magnetic domains and MnBi grains in the film. Extra Mn layers did not affect the structure and magnetism significantly, while the addition of Bi layers changed the magnetic structure of MnBi grains.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Y. H. Hou, Y. L. Wang, Y. L. Huang, Y. Wang, S. Li, S. C. Ma, Z. W. Liu, D. C. Zeng, L. Z. Zhao, Z. C. Zhong
Article
Chemistry, Physical
K. Liu, S. C. Ma, L. Zhang, Y. L. Huang, Y. H. Hou, G. Q. Zhang, W. B. Fan, Y. L. Wang, Y. Wang, J. Cao, K. X. Guo, Z. C. Zhong
JOURNAL OF ALLOYS AND COMPOUNDS
(2017)
Article
Physics, Applied
W. Chen, J. M. Luo, Y. W. Guan, Y. L. Huang, M. Chen, Y. H. Hou
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2018)
Article
Physics, Applied
W. B. Fan, Y. H. Hou, X. J. Ge, Y. L. Huang, J. M. Luo, Z. C. Zhong
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2018)
Article
Nanoscience & Nanotechnology
J. Cao, Y. L. Huang, Y. H. Hou, G. Q. Zhang, Z. Q. Shi, Z. C. Zhong, Z. W. Liu
Article
Materials Science, Multidisciplinary
W. Chen, Y. L. Huang, J. M. Luo, Y. H. Hou, X. J. Ge, Y. W. Guan, Z. W. Liu, Z. C. Zhong, G. P. Wang
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2019)
Article
Chemistry, Physical
Y. L. Huang, Z. H. Li, X. J. Ge, Z. Q. Shi, Y. H. Hou, G. P. Wang, Z. W. Liu, Z. C. Zhong
JOURNAL OF ALLOYS AND COMPOUNDS
(2019)
Article
Materials Science, Multidisciplinary
Jun Cao, Tianli Zhang, Jinghua Liu, Hao Xu, Mingyao Hu, Wei Xia, Ao Wang, Hui Wang, Chengbao Jiang
Summary: By optimizing the grain boundary and adjusting the solution process, significant improvement in squareness was achieved in iron-rich Sm-Co-Fe-Cu-Zr magnets, resulting in an excellent maximum energy product. It was revealed that the grain boundary phases and micro-twins' density in grain interiors can be controlled to interpret the enhancement mechanism of squareness.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(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)