Article
Chemistry, Physical
X. S. Li, Z. Y. Xue, X. B. Hou, G. Q. Wang, X. Huang, H. B. Ke, B. A. Sun, W. H. Wang
Summary: A high ferromagnetic element content amorphous/nanocrystalline alloy system was synthesized with high saturation magnetization and low crystallization activation energy. These alloys are beneficial for reducing the processing cost of producing ferromagnetic nanocrystalline alloys and have a large annealing temperature window.
Article
Materials Science, Multidisciplinary
Xingdu Fan, Tao Zhang, Weiming Yang, Junhua Luan, Zengbao Jiao, Hui Li
Summary: The Fe81.3Si4B13-xPxCu1.7 soft magnetic alloys with high Cu and proper P elements addition were synthesized to ensure the amorphous forming ability (AFA) and expand the crystallization window (CW). It was found that an atomic ratio of P/Cu around 3 is advantageous for AFA, and a small amount of P addition promotes the precipitation of alpha-Fe grains. High Cu concentration expands the annealing temperature (Ta) window, while proper P addition enlarges the annealing time (ta) window. The successful synthesis of the Fe81.3Si4B8P5Cu1.7 soft magnetic alloy with a large Ta window of up to 130 degrees C and ta window of 90 min is a breakthrough for nanocrystalline alloys with high saturation magnetization.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Review
Chemistry, Physical
Ahmed Talaat, David W. Greve, M. V. Suraj, Paul R. Ohodnicki
Summary: This review discusses the rapid thermal processing of amorphous and nanocrystalline soft magnetic alloys in electromagnetic fields, focusing on the effects of heating on structural and magnetic properties. It also presents future development trends and challenges in the field.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Kaisheng Ming, Shuimiao Jiang, Xiaoyuan Niu, Bo Li, Xiaofang Bi, Shijian Zheng
Summary: The combination of high strength, ductility, and low coercivity in soft magnetic alloys can be achieved by introducing high-density magnetic nanoprecipitates.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Zai-Dao Li, Wei-Wei Zhang, Ge-Tian Li, Song-Song Li, Hong-Sheng Ding, Tao Zhang, Yu-Jun Song
Summary: The effect of different annealing temperatures on the crystallization condition, magnetic properties, and thermal stability of the amorphous magnetic alloy Co(36)Fe(36)Si(4.8)B1(9.2)Nb(4) (at%) was investigated in this study. Results showed that the annealing temperature can significantly influence the size and content of precipitated nanocrystals in the amorphous alloy, leading to changes in magnetic properties and Curie temperature. Under an applied transverse external magnetic field of 9550.0 A·m(-1), annealing at 595 degrees C for 30 min resulted in the amorphous alloy exhibiting excellent soft magnetic properties, with a saturation magnetization of 110.00 mA·m(2)·g(-1), residual magnetic induction intensity of 4 x 10(-6) T, and coercivity as low as 57.3 A·m(-1). Furthermore, the Curie temperature of the field-annealed samples reached up to 440 degrees C, approximately 58 degrees C higher than that of the as-quenched species.
Article
Chemistry, Multidisciplinary
Xuesong Li, Jing Zhou, Laiquan Shen, Baoan Sun, Haiyang Bai, Weihua Wang
Summary: This study achieves excellent comprehensive soft magnetic properties with high saturation magnetic flux density and low coercivity through the construction of a transitional microstructure in an FeCo-based alloy.
ADVANCED MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Taixiao Kang, Shiyu Wu, Mingliang Wang, Jun Wang, Xiaolong Fan, Yiping Lu
Summary: The study investigates the effects of Al and Si on the microstructure evolution, mechanical, magnetic properties, and electrical resistivity of non-equimolar Fe2CoNi(AlSi)(x) high-entropy alloys. It was found that the addition of Al and Si can enhance the alloy's mechanical and soft magnetic properties, with Fe2CoNi(AlSi)(0.4) showing excellent performance. This research provides valuable insights for developing new high-entropy alloys with optimal balance of properties for industrial applications.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Chemistry, Physical
Yuluo Li, Ningning Shen, Suo Zhang, Yidong Wu, Li Chen, Kuang Lv, Zhanbing He, Fushan Li, Xidong Hui
Summary: By designing alloy systems with amorphous/α-Fe hierarchic structures, the magnetic properties of the alloys can be improved, including enhancing the saturation magnetization and coercivity. Further improvement in the magnetic properties of the alloys can be achieved through appropriate annealing processes.
Article
Metallurgy & Metallurgical Engineering
Song Ding, Min Lui, Zhanyong Wang, Zemin Wang, Binjun Wang, Ding Zhou, Minglin Jin, Yanli Siu
Summary: The study investigates the effects of phosphorus and carbon on the crystallization and magnetic properties of iron-based soft magnetic amorphous alloy containing up to 22 at.% B. The composition and heat treatment of the alloy with the best soft magnetic properties are determined through experiments.
METAL SCIENCE AND HEAT TREATMENT
(2021)
Article
Automation & Control Systems
Gabriel Villalba-Alumbreros, Enrique Lopez-Camara, Javier Martinez-Gomez, Santiago Cobreces, Ignacio Valiente-Blanco, Efren Diez-Jimenez
Summary: This paper presents a microcutting process of FeCo-2 V-based soft magnetic alloys as an alternative method for obtaining microparts with high magnetic properties and good geometrical finish. The results of the machining process are analyzed by varying the machining parameters such as depth of cut, tool diameter, rotation speed, and feed speed. The study shows that micromilling can be a good alternative for microfabrication of FeCo-2 V components suitable for precision microassemblies on MEMS.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Yimin Guo, Xinchao Wang, Xuan Li, Tao Zhang
Summary: To avoid annealing embrittlement and annealing-induced resistivity drop, the Fe85P11C2B2 amorphous alloy was treated by pulse current (PC) and rolling. The PC processing enhanced atom mobility, resulting in the formation of alpha-Fe nanocrystals and release of internal stress, increasing saturation magnetization (Ms) and reducing coercivity (Hc). Rolling after PC treatment improved sample resistivity (ρ). The synergy of PC + rolling treatment increased Ms from 1.54 T to 1.64 T, enhanced resistivity from 177.1 μΩ·cm to 192.0 μΩ·cm, and decreased Hc from 6.4 A/m to 5.6 A/m. The treated sample maintained good bending ductility.
Article
Chemistry, Physical
H. Can, K. Icin, S. Akyol, U. Topal, S. Ozturk, H. Sozeri
Summary: (FeCo)84CuB15 soft magnetic alloys with Fe/Co ratios (5:1, 3:1, and 1:1) were prepared by planar flow casting method. The structural and magnetic properties were characterized using XRD and SEM. The magnetic parameters were determined by vibrating sample magnetometer and B-H loop tracer. The magnetic field variations on the surface of the ribbons were investigated using a magnetic force microscope. Fluxgate sensors were prepared and their magnetic field sensing ability, working range, and noise were measured. The alloys showed soft magnetic behavior with high magnetization values and low coercivities. Permeability values increased with increasing Fe/Co ratio. However, the magnetic field sensing feature and noise parameters decreased as the Fe/Co ratio increased, while the working range of the sensors enlarged.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Z. Li, R. Parsons, H. Kishimoto, T. Shoji, A. Kato, J. Karel, K. Suzuki
Summary: This study investigated the glass-forming range, microstructural features, and soft magnetic properties of (Fe(1-x-)yCo(x)Ni(y))(86)B-14 alloys. It was found that Fe-rich compositions have the largest glass-forming range and exhibit nano-scale grains with bcc and fcc structures after ultra-rapid annealing. The coercivity and saturation magnetic polarization of the nanocrystalline alloys are affected by Co and Ni content, with Co addition generally increasing coercivity and saturation magnetic polarization, while Ni addition has the opposite effect.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Zhong Li, Jianing Qi, Zhuangzhuang Li, Hongxia Li, Hui Xu, Guohua Bai, Xianguo Liu, Xuefeng Zhang
Summary: The magnetic domain structure and soft magnetic properties of high-entropy alloys FeCoNi(AlSi)x (0.1 <= x <= 0.7) are influenced by grain and phase boundaries. The variations in grain and phase boundaries in different alloys affect their magnetic properties differently.
Article
Materials Science, Multidisciplinary
Minhao Han, Cheng Sun, Hongjie Xu, Yang Meng, Qiang Luo, Boying Qiao, Yani Xu, Tao Zhang
Summary: This study investigates the effect of rapid annealing (RA) on the crystallization behavior and soft magnetic properties of Fe-Co-B amorphous alloys. It is found that RA generates large superheating which increases the homogenous nucleation rate of nanocrystals, while the short duration inhibits the growth kinetics, resulting in fine and dense nanograins. The Fe-Co-B alloy exhibits optimized properties of low coercivity and high saturation magnetization after RA treatment. In contrast, conventional annealing produces large and sparse grains with high coercivity.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Muhammad Haris Azhar, Tayyaba Noor, Naseem Iqbal, Neelam Zaman, Sarah Farrukh
Summary: This study uses a novel adsorbent Metal Organic Framework (MOF) and its composites to adsorb CO2. Experiment results show that 5 wt% g-C3N4/Ni-BDC MOF exhibits the highest adsorption capacity.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Ayumu Nodera, Shinya Aikawa
Summary: In this study, a CO2 sensor capable of low-temperature operation was fabricated using an open-channel-type thin-film transistor structure with a polar surface of an oxide semiconductor. The sensor showed a sensitivity 2.9 times greater than that under an inert N2 atmosphere at an operating temperature of only 150 degrees C. The results suggest that TFTs fabricated with polar surfaces of oxide semiconductors are useful for gas-sensing applications.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Bindhyabasinee Mishra, Jyotirmayee Nanda, Subhra S. Brahma, K. J. Sankaran, R. Sakthivel, S. Ghadei, S. Suman
Summary: In this study, a series of polycrystalline mixed spinel ferrites were synthesized and characterized. The Mg0.5Zn0.5La0.05Fe1.95O4 ferrite showed the best response and recovery time, indicating its potential as a material for LPG sensing.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2024)
Review
Materials Science, Multidisciplinary
Rajashree Panda, Mitrabhanu Behera, A. Arun Kumar, Dhananjay Joshi
Summary: Rare earth doped aluminate-based phosphors are preferred over sulfide-based phosphors. The unique luminescence features of lanthanide-based materials are being utilized for multidisciplinary research and inventive applications. The past years have seen an increase in research interest in aluminate-based phosphors, leading to improvements in their long-lasting phosphorescence and phosphorescence efficiencies. Combustion synthesis route is an efficient technique for preparing nano-phosphor due to its simplicity and cost-effectiveness.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2024)
Review
Materials Science, Multidisciplinary
Younes Zohrabi
Summary: Water is essential for the survival of living organisms, but industrialization has led to contamination of water sources with heavy metals and harmful pollutants. Magnetic nano ferrites have shown potential in effectively removing heavy metals from water due to their magnetic characteristics, high surface area, surface active sites, chemical stability, and ease of modification. This review explores recent literature on the synthesis and application of magnetic ferrites for removing heavy metals from water, aiming to provide a comprehensive understanding for future research.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Baolin Liu, Chenxin Xie, Guanglei Qian, Lishan Zhou, Chenglei Zhang, Lingzhi Zhu
Summary: In this study, a self-cleaning CuO-PdO-Pd/Ti membrane has been developed for the removal of small-sized pollutants. The membrane exhibited superior removal ability and permeability compared to conventional membranes, and maintained high efficiency even after repeated tests. The CuO-PdO-Pd/Ti membrane also showed excellent removal efficiency when treating real wastewater, indicating its high potential for practical applications.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Debabrata Panda, Akhilesh Kumar Sahu, Krunal M. Gangawane
Summary: A variety of hierarchical nanoporous silica aerogels were synthesized from well-dispersed silica sols, exhibiting diversified particle distributions and excellent thermal properties. The silica aerogels showed low thermal conductivity and high-temperature resilience. Surface modification and dilution of silica sols further improved the thermal resistance of the aerogels. The resilient skeleton structure developed from tiny particles effectively restricted heat dissipation and maintained the porous network at high temperatures.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Hardy Shuwanto, Hairus Abdullah, Young Ku, Jenni Lie
Summary: In this study, a defective system of V-doped Fe2O3 with Pt as a cocatalyst was used for photoelectrochemical water oxidation. The defects in the VFPt-2.5 photoanode were characterized by XPS and EPR analyses. The SEM and TEM analyses revealed that the electrodeposited V-doped alpha-Fe2O3 had a nanosized morphology with an average diameter of 12 nm and a thickness of 300 nm. Under light irradiation, the VFPt-2.5 photoanode achieved a remarkable onset potential and photocurrent density. The stability test showed that Pt helped overcome the charge recombination caused by surface states.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Reza Gholipur, Hemin Mohammed Ali Khalifa, Khatereh Afrouzeh
Summary: Developing doped cathode materials is crucial for achieving low cost and high-performance energy storage. LiMn1.977(Ce, Cu, Ti, CeCuTi)0.023O4 nanoparticles show unmatched high structural stability, capacity, and safety during charge/discharge cycles. Ti-doped LiMn2O4 cathode calcined at 700 degrees C demonstrates the highest capacity and retention when multi-walled carbon nanotubes are added. The presence of titanium increases the porosity for reversible lithium storage and the dielectric constant.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
T. Amutha, M. Rameshbabu, S. Sasi Florence, G. Ramalingam, S. Muthupandi, K. Prabha
Summary: This research provides an overview of the structural analysis and magnetic characteristics of dilute magnetic semiconductor oxides (DMSOs) based on binary metal oxide nanomaterials with different ferromagnetic or paramagnetic dopants. The coprecipitation method was used to create nanoparticle samples, and the results showed certain ferromagnetic behavior and increased magnetic properties.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Preeti Kumari, Vipul Srivastava, Ramesh Sharma, Hamid Ullah
Summary: In this study, the rare-earth ferrites perovskite RFeO3 (R = Pr, Nd) were investigated for their various properties including structural, electronic, magnetic, optical, thermodynamic, and thermoelectric behavior. The study found that these materials exhibit half-metallic behavior under certain conditions, and their optical and thermoelectric properties were evaluated, making them potential candidates for spintronic devices and UV absorbers.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Shuting Yuan, Tianchi Wang, Tian Feng, Jian Kong
Summary: In this study, Fe/Fe3O4/C hollow electromagnetic wave absorbers were prepared using hollow ceiba fibers as templates. The proposed hollow structure could reflect and scatter electromagnetic waves multiple times, leading to significant energy consumption. The impedance matching of magnetic materials and biochar enabled the joint absorption of magnetic and dielectric losses to absorb electromagnetic waves.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
G. R. Mamatha, B. R. Radha Krushna, J. Malleshappa, S. C. Sharma, Satish Kumar, C. Krithika, Nandini Robin Nadar, Dileep Francis, K. Manjunatha, Sheng Yun Wu, H. Nagabhushana
Summary: Nanostructured SrAl2O4:Tb3+/M (M = Li+, Na+, K+, Ca2+, Bi3+) green nanophosphors were synthesized using an environmentally friendly combustion process and Areca nut as a sustainable fuel source. The introduction of alkali metal co-dopants optimized the luminescent intensity and showed potential for data security applications.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Tomoyuki Tachibana, Akihiro Yabuki
Summary: A one-step thermal-reduction method was used to synthesize copper sulfide films with different compositions and pillar-like structures, through adjusting the sulfur ratio and incorporating excess sulfur during the synthesis process.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Manal A. Mahdy, I. K. El Zawawi, Manal Mounir Ahmad
Summary: Pure PVA and its nanocomposites with CuO and/or CoFe2O4 films were prepared and characterized. The optical properties of the films can be modulated by controlling the percentage of CuO and/or CoFe2O4. The nanocomposites exhibit good ferromagnetic behavior, making the prepared films potentially useful in antenna system miniaturization and flexible magneto-electronic applications.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2024)