Article
Materials Science, Multidisciplinary
Tetsuji Saito, Daisuke Nishio-Hamane
Summary: The structures and magnetic properties of SmFe5_xTix melt-spun ribbons were studied, revealing that the alloys containing different metastable phases exhibited varying coercivity values as the titanium content increased.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Liang Sun, Kuo-She Li, Hong-Wei Li, Dun-Bo Yu, Yang Luo, Jin-Ling Jin, Shuo Lu, Ning-Tao Quan
Summary: Melt-spun Y16Fe78B6 ribbons were prepared using the melt-spinning technique with pure Y, Fe, and Fe-B alloy in argon. The ribbons mainly consisted of Y2Fe14B, YFe2, and alpha-Fe phases. The amorphous phase appeared at a wheel velocity of >35 m·s(-1). The ribbons prepared at the optimum wheel velocity and heat treatments exhibited coercivity, remanence, and maximum energy product of 239.5 kA·m(-1), 0.61 T, and 32.7 kJ·m(-3) respectively. Investigation of the Henkel plots of the ribbons revealed that intergrain exchange coupling enhanced the remanence. The coercivity mechanism of the ribbons prepared at 35 m·s(-1) was mainly controlled by inhomogeneous pinning of domain walls. The phase component and magnetic properties changed with annealing temperature and time. The optimum magnetic properties were obtained with the ribbon quenched at 35 m·s(-1) and annealed at 700 degrees C for 10 min.
Article
Materials Science, Multidisciplinary
Alena Vishina, Daniel Hedlund, Vitalii Shtender, Erna K. Delczeg-Czirjak, Simon R. Larsen, Olga Yu Vekilova, Shuo Huang, Levente Vitos, Peter Svedlindh, Martin Sahlberg, Olle Eriksson, Heike C. Herper
Summary: A new class of rare-earth-free permanent magnets based on Co3Mn2Ge has been proposed, demonstrating promising magnetic properties and potential applications. The discovery was a result of combining first principles theory with experimental synthesis and characterisation, showing the critical role of disorder in Co and Ge atoms for improving magnetism.
Article
Materials Science, Multidisciplinary
Alena Vishina, Olle Eriksson, Heike C. Herper
Summary: With advancements in crystal structure prediction, databases of new materials are being developed. Through these databases, stable and metastable materials can be discovered and studied for their properties. Using a high-throughput and data-mining approach, four promising candidates for rare-earth-free permanent magnets have been found.
Article
Chemistry, Physical
E. Antoniou, G. Sempros, M. Gjoka, C. Sarafidis, H. M. Polatoglou, J. Kioseoglou
Summary: This study investigates the effect of substituting cobalt atoms with nickel atoms on the crystal structure of SmCo5, aiming to identify a stable structure with high magnetization values. Atomistic simulations based on Density Functional Theory calculations were conducted to explore various crystallographic positions for Co and Ni atoms in a SmCo5-xNix compound. Experimental findings showed that energetically favorable atomistic configurations may not always exhibit the maximum magnetization.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Physics, Applied
Kai Wang, Weichao Huang, Jue Xie, Yuxin Chen, Jianqiu Deng, Jiang Wang, Guanghui Rao, Qingrong Yao, Huaiying Zhou
Summary: The Cu content significantly affects the microstructure and magnetic properties of (Pr0.25Nd0.75)(2)Fe13.85-xCo0.1Ti0.05CuxB alloys, with optimal magnetic properties observed at a Cu content of 0.6. The addition of Cu promotes the formation of an amorphous phase, contributing to a decrease in coercivity.
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
(2021)
Article
Chemistry, Multidisciplinary
Fanghua Tian, Qizhong Zhao, Jiale Guo, Sen Kong, Bingjie Liu, Zhiyong Dai, Minxia Fang, Yin Zhang, Chao Zhou, Kaiyan Cao, Sen Yang
Summary: The structure of a material plays a crucial role in determining its physical properties. By adjusting the wheel speed, the structure of Ni50Mn37Ga13 spun ribbons can be modified to regulate the exchange bias effect. Experimental results show that as the wheel speed increases, the martensite lath decreases and the structure changes, with the optimal exchange bias effect occurring at a wheel speed of 25 m center dot s(-1).
Article
Engineering, Electrical & Electronic
Alexander M. Gabay, George C. Hadjipanayis
Summary: This study focuses on the development of hard magnetic properties in Sm(Fe,Co)(12)-based compounds through nanostructuring and powder metallurgy. The addition of Zr and B elements can significantly enhance the magnetic properties of the alloys. The research provides insights into the effects of alloy structure and solidification rates on the magnetic performance.
IEEE TRANSACTIONS ON MAGNETICS
(2022)
Article
Nanoscience & Nanotechnology
Liying Cong, Haibo Xu, Qingmei Lu, Ming Yue
Summary: Rotation calcium thermal reduction diffusion technology was used to regenerate Nd-Fe-B sludge, resulting in uniform and well-dispersed regenerated Nd-Fe-B powder. The magnetic properties of the regenerated powder initially increased and then decreased with increasing rotation rate. When the rotation rate was 10 rpm, the magnetization of the regenerated powder reached 138.22 emu/g, 10.2% higher than that of the purified sludge. The regenerated powder was further processed to prepare a sintered magnet with a density of 7.51 g/cm(3) and a maximum magnetic energy product of 42.87 MGOe, laying a foundation for in situ regeneration of Nd-Fe-B sludge.
Article
Chemistry, Physical
Feilong Dai, Peipei Liu, Lin Luo, Dekang Chen, Qingrong Yao, Jiang Wang
Summary: The phase structure and microstructure of Sm12Co88-xCux alloys and ribbons were studied experimentally, and the results showed that the Cu substitution had a significant effect on the phase composition and crystal structure of the alloys. Magnetic measurements indicated that the magnetic properties of the ribbons were improved with the increase in Cu substitution.
Article
Polymer Science
Figen Selli, Rudolf Hufenus, Ali Gooneie, Umit Halis Erdogan, Edith Perret
Summary: Poly(hydroxybutyrate-co-3-hexanoate) (PHBH) is a biodegradable thermoplastic polyester that shows potential for textile and medical applications. In this study, we aimed to develop a scalable melt-spinning method to produce fine biodegradable PHBH filaments without the need for an ice water bath or offline drawing techniques. We evaluated the effect of different polymer grades and production parameters on the tensile properties of the melt-spun filaments. The results showed that highly oriented non-crystalline mesophase and highly oriented alpha-crystals significantly increased the tensile strength of the PHBH filaments. Aging also had an impact on the structure and tensile performance of the filaments.
Article
Physics, Applied
C. S. Kim, S. L. Ding, J. H. Kim, C. Yun, W. Y. Yang, J. Z. Han, S. Q. Liu, H. L. Du, C. S. Wang, J. B. Yang
Summary: The sphericity parameter kappa has a significant impact on the magnetic properties of rare earth-transition metal (RE-TM) permanent magnets, especially at different temperatures. An increase in kappa leads to a significant increase in coercivity of the magnets, with increments ranging from 22% to 23% in certain systems.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Chemistry, Physical
Songmao Li, Bang Zhou, Xuefeng Liao, Hongya Yu, Zhongwu Liu
Summary: By systematically studying the magnetic properties and phase precipitation behavior of Ho-Fe-B alloys, it was found that the directly quenched Ho-Fe-B alloys exhibited excellent magnetic properties, with the Ho2Fe14B phase structure playing a crucial role. Increasing the Ho content can enhance the coercivity but decrease the remanence. Ho2Fe14B phase was observed to precipitate during heat treatment, while Ho2Fe17 phase formed at higher temperatures.
Article
Nanoscience & Nanotechnology
M. J. Szczerba
Summary: This study reports the first observations of giant magnetic-field-induced bending effect in Ni-Mn-Ga-Co-Cu alloys produced by the melt-spinning technique. The bending effect initiation was observed at a very low magnetic field, and the overall deformation was composed of plastic and elastic contributions, with the elastic contribution dominating in the later stages of the experiment.
SCRIPTA MATERIALIA
(2021)
Article
Physics, Multidisciplinary
P. Rani, R. Singla, J. Thakur, A. H. Reshak, M. K. Kashyap
Summary: The effect of Pd substitution on the overall electronic and magnetic properties of L1(0)-FeNi has been analyzed using DFT calculations. It is found that the substitution of Pd can significantly improve the magnetic properties of the material, making Pd-substituted FeNi alloys potential candidates for rare-earth free permanent magnets.
INDIAN JOURNAL OF PHYSICS
(2023)
Article
Physics, Applied
L. Huang, D. Y. Cong, L. Ma, Z. H. Nie, Z. L. Wang, H. L. Suo, Y. Ren, Y. D. Wang
APPLIED PHYSICS LETTERS
(2016)
Article
Chemistry, Physical
Zhihua Nie, Zilong Wang, Sen Yang, Daoyong Cong, Yang Ren, Dennis E. Brown, Yan-dong Wang
JOURNAL OF ALLOYS AND COMPOUNDS
(2017)
Article
Chemistry, Physical
Zhihua Nie, Zilong Wang, Yanbin Liang, Daoyong Cong, Gaoqiang Li, Cheng Zhu, Chengwen Tan, Xiaodong Yu, Yang Ren, Yandong Wang
JOURNAL OF ALLOYS AND COMPOUNDS
(2018)
Article
Materials Science, Multidisciplinary
Yongli Wang, Yang Luo, Zilong Wang, Guiyong Wu, Jiajun Xie, Wenlong Yan, Dunbo Yu
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2018)
Article
Chemistry, Applied
Wenlong Yan, Ningtao Quan, Yang Luo, Dunbo Yu, Zilong Wang, Guiyong Wu, Kun Zhang
JOURNAL OF RARE EARTHS
(2018)
Article
Materials Science, Multidisciplinary
Wen-Long Yan, Yang Luo, Dun-Bo Yu, Gui-Yong Wu, Ning-Tao Quan, Yuan-Fei Yang, Hai-Jun Peng, Zi-Long Wang
Article
Chemistry, Applied
Liangliang Zhu, Kuoshe Li, Yang Luo, Dunbo Yu, Zilong Wang, Guiyong Wu, Jiajun Xie, Zhifeng Tang
JOURNAL OF RARE EARTHS
(2019)
Article
Materials Science, Multidisciplinary
Haijun Peng, Yang Luo, Yakun Dou, Yuanfei Yang, Zilong Wang, Wenlong Yan, Jiajun Xie, Dunbo Yu, Shulin Diao
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2019)
Article
Materials Science, Multidisciplinary
Yang Luo, Zilong Wang, Yuanfei Yang, Yakun Dou, Jiajun Xie, Haijun Peng, Ningtao Quan, Guiyong Wu, Wenlong Yan, Dunbo Yu
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2019)
Article
Materials Science, Multidisciplinary
Cao-Huan Zhang, Yang Luo, Dun-Bo Yu, Ning-Tao Quan, Gui-Yong Wu, Ya-Kun Dou, Zhou Hu, Zi-Long Wang
Article
Materials Science, Multidisciplinary
Xiao Lin, Yang Luo, Hai-jun Peng, Yuan-fei Yang, Ya-kun Dou, Zi-long Wang, Kang-sheng Xu, Shu-lin Diao, Dun-bo Yu
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2019)
Article
Chemistry, Applied
Guibing Shi, Zilong Wang, Xinyuan Bai, Wenlong Yan, Yang Luo, Dunbo Yu
JOURNAL OF RARE EARTHS
(2020)
Article
Chemistry, Applied
Wei Zhu, Yang Luo, Zilong Wang, Xinyuan Bai, Haijun Peng, Dunbo Yu
Summary: Commercial sintered Nd-Fe-B magnets with Tb coating on the surface were prepared by DC magnetron sputtering, and the microstructure was regulated through secondary heat treatment to enhance coercivity. SEM results showed that 950°C was the optimal diffusion temperature and 500°C was the optimal annealing temperature.
JOURNAL OF RARE EARTHS
(2021)
Article
Materials Science, Multidisciplinary
Peng Zhao, Yang Luo, Dun-Bo Yu, Hai-Jun Peng, Wen-Long Yan, Zi-Long Wang, Xin-Yuan Bai
Summary: Hot-deformed magnets processed from nanocrystalline/amorphous Nd-Fe-B powders were prepared at different hot-pressing temperatures. The optimal magnetic properties were achieved at a hot-pressing temperature of 650 degrees C, with the presence of fine platelet-like grains contributing to superior magnetic performance. The accumulation of Nd/Pr-rich phase in the coarse grains' region tends to deteriorate the magnetic properties as the hot-pressing temperature increases.
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)