Article
Materials Science, Multidisciplinary
Shao-Dong Cheng, Lu Lu, Lvkang Shen, Hong-Mei Jing, Ming Liu, Shao-Bo Mi
Summary: The study on the effect of post-annealing on CoFe2O4:MgO nanocomposite films revealed that post-annealing can influence the microstructure and magnetic properties of the nanocomposite films, leading to changes in the distribution of Co and the epitaxial strain state, as well as affecting the in-plane and out-of-plane saturation magnetization and coercivity.
Article
Chemistry, Multidisciplinary
A. Lazzarini, R. Colaiezzi, M. Passacantando, F. D'Orazio, L. Arrizza, F. Ferella, M. Crucianelli
Summary: The team synthesized silica-coated iron oxide magnetic nanoparticles as the starting core for easily-recoverable heterogeneous catalysts supports. Various techniques were employed to analyze the features of the synthesized materials, and a oxidation reaction was used to confirm the effectiveness of the silica shield.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2021)
Article
Chemistry, Physical
M. A. Mazo, A. C. Caballero, J. Rubio
Summary: In this study, cheap, abundant, and easily-obtained carbon fillers such as graphite and carbon black were successfully incorporated into a silicon oxycarbide matrix to obtain dense crack-free bulk composites with enhanced electrical and thermal conductivities. Raman parameters were crucial for understanding the electronic and/or phonon transport in the composites.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Feng Gu, Ji-Bing Sun, Bo-Ren Hou, He -Wei Ding
Summary: Increasing the melt-spinning speed can improve the microstructure and magnetic properties of the ribbons, with a significant reduction in grain size achieved through melt-spinning at 50 m/s.
Article
Chemistry, Inorganic & Nuclear
Ashish Bhagat, Akhil Kokkiripati, Bhaskar Bhaduri
Summary: This study focuses on synthesizing spherical shaped Ag NPs on a support of magnetic nickel ferrite/oxidized graphite. The synthesized material successfully incorporates nano-sized Ag and NiFe2O4 NPs onto the O-graphite surface. The material exhibits excellent catalytic activity towards the reduction of P-nitrophenol (P-NP). The synergy between nano-sized Ag NPs and magnetic NiFe2O4/O-graphite support plays a key role in enhancing the catalytic activity.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Sudhanshu Kumar, K. Sreenivas
Summary: The structural and magnetic properties of as-prepared and annealed MgFe2O4 nano-powders prepared by auto-combustion method using dl-alanine fuel were investigated. Annealing at different temperatures resulted in changes in crystallite size, saturation magnetization, and coercivity, which were correlated with variations in cation distribution in the octahedral and tetrahedral sites. Residual carbon, hydrogen, and nitrogen content in the powders were found to decrease after annealing at 900 degrees Celsius in air.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Materials Science, Ceramics
Priyanka, Saravanan Muthiah
Summary: A trade-off between thermoelectric performance and cost-effectiveness enables commercial thermoelectric power generation. FeSi2 based materials have potential due to their low-cost and abundance, but their thermoelectric performance is inferior to other materials. This work presents a simple synthesis strategy, resulting in improved thermoelectric and mechanical properties.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Diana M. Arciniegas Jaimes, Paulina Marquez, Juan Escrig, Omar Linarez Perez, Noelia Bajales
Summary: Low dimensional carbon allotropes are commonly used in composites, and when combined with magnetic nanostructures, they create versatile materials for sensitive electrodes. Magnetic composites based on permalloy nanowires with graphene oxide and reduced graphene oxide show improved conductivity compared to the pristine matrix, with a more pronounced effect observed in the graphene oxide-based composite, making it an attractive alternative for sensing purposes.
Article
Nanoscience & Nanotechnology
Hui-Dong Qian, Jung Tae Lim, Jong-Woo Kim, Yang Yang, Kyung Mox Cho, Jihoon Park, Chul-Jin Choi
Summary: This study successfully produced high density sintered Sm(Fe0.8Co0.2)(11)Ti bulk magnets using a newly developed high pressure pressing method. The purity of the hard magnetic ThMn12 phase in the bulk magnet was over 97 wt.%. The phase transformation behavior from amorphous to ThMn12 phase during heat treatment was systematically investigated, achieving high remanent magnetization and maximum energy product. The achieved maximum energy product in the bulk magnet is the highest reported among all SmFe12-based bulk magnets.
SCRIPTA MATERIALIA
(2021)
Article
Chemistry, Multidisciplinary
Ali Baghizadeh, Pegah Mirzadeh Vaghefi, Xing Huang, Jerome Borme, Bernardo Almeida, Andrei N. Salak, Marc-Georg Willinger, Vitor B. Amaral, Joaquim M. Vieira
Summary: Multiferroic materials with coexistence of magnetic and ferroelectric orders are promising candidates for magnetoelectric devices. Understanding the underlying mechanisms and tailoring the properties to make them suitable for such devices is challenging. Research on epitaxial films of (Lu,Sc)FeO3 shows an increase in the Neel ordering temperature, highlighting the significant impact of lattice strain on thin film properties.
Article
Chemistry, Inorganic & Nuclear
Ch. Rambabu, K. Subrahmanya Sarma, Ch. Shivanarayana, U. Padmavathi, R. Swetha, K. Raju, Khalid Mujasam Batoo, N. Murali, Ritesh Verma, P. V. Lakshminarayana
Summary: The substitution of La-Cu in nano hexagonal ferrites of Strontium had effects on the structural and magnetic properties, leading to a decrease in crystallite sizes and unit cell parameters, as well as an increase in saturation magnetization with doping levels.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Polymer Science
Teresa Palacios, Sandra Tarancon, Jose Ygnacio Pastor
Summary: This study explores the potential of two hybrid dental materials, VE and EC, for CAD/CAM dental restorations by analyzing their micro-structure and mechanical performance in different environments. Results show that although the crystalline phase of the materials is similar, there are differences in micro-structure and mechanical behavior. EC exhibits higher mechanical performance but with greater variability of results, while VE shows mechanical performance similar to enamel and dentin.
Article
Nanoscience & Nanotechnology
Jungkyun Na, Hyun-seok Ko, Yangmo Koo, Semin Park
Summary: To improve the performance of transformers, we fabricated ultra-thin Fe-Si alloy sheets with high volume fraction of uniform grains and excellent magnetic properties at 20 kHz using a novel method. The growth of (001) // RD grains was found to control core loss, and grain size was affected by sheet thickness and annealing time. Our specimen achieved a significant improvement in core loss (P0.5/20,000) and had one of the highest magnetic flux densities compared with commercial Fe-Si alloy sheets.
SCRIPTA MATERIALIA
(2023)
Article
Materials Science, Multidisciplinary
Jose David Arregui-Mena, David A. Cullen, Robert N. Worth, Singanallur V. Venkatakrishnan, Matthew S. L. Jordan, Michael Ward, Chad M. Parish, Nidia Gallego, Yutai Katoh, Philip D. Edmondson, Nassia Tzelepi
Summary: Porosity can heavily influence the properties of nuclear-grade graphite, and electron tomography is able to visualize the sub-micron pores in three dimensions. This research demonstrates the 3D structure of both native and irradiation-induced nano-cracks in graphite, as well as the unique characteristics of graphite such as pore structure. The technique could also be useful for molecular dynamic simulations and experimental techniques related to irradiated graphite and other nuclear porous carbon-based materials.
JOURNAL OF NUCLEAR MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Zhuangzhuang Liu, Anqi Xia, Qinggang Li, Junyan Wu, Hao Wu, Jian Zhou, Guohua Fan, Zhi Wang
Summary: Dual-heterogeneous titanium-based composites were designed to enhance the strength-ductility synergy by utilizing compositional gradient and multi-layered hetero-structures. The study evaluated the effects of heterogeneous degree and deformation temperatures on mechanical properties, and elucidated the underlying mechanism through the disorder-to-order transition of dislocation configurations with temperature dependency.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
A. Aly, M. Ghali, A. Osman, M. K. El Nimr
Summary: This study reports the discovery of naturally occurring luminescent graphene quantum dots (GQDs) in coconut water for the first time. The GQDs were identified through various measurements and were found to have dual sizes and emit different wavelengths of light. The GQDs were also utilized as an efficient optical sensor for aniline liquid detection.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Zehua Chen, Wencheng Ma, Qinglu Fan, Yanhua Liu, Min Sun, Shuo Wang
Summary: The nanoscale e-VOPO4 materials were successfully prepared by hydrothermal synthesis and calcination, showing high purity and suitable particle size. It exhibited satisfactory electrochemical performance as cathode material for sodium ion batteries, making it a potential candidate for high energy storage systems.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Tao Liu, Yahui Liu, Le Ling, Zhongxi Sheng, Zao Yi, Zigang Zhou, Yongjia Yang, Bin Tang, Qingdong Zeng, Tangyou Sun
Summary: In this paper, a terahertz (THz) micronano device that can switch between bimodal absorption and plasmon-induced transparency (PIT) is proposed. The device consists of layers of graphene, silica, and vanadium dioxide, and has a simple structure, easy tuning, and wide-angle absorption. The device achieves perfect absorption at specific frequencies and is highly sensitive to environmental refractive index. It also has the functions of a three-frequency asynchronous optical switch and slow light effect.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Xiaobo Luo, Songhan Hu, Qiudong Duan, Dacheng Zhou, Jialin Chen, Yugeng Wen, Jianbei Qiu
Summary: The exploration of solar light absorption by a material is important in photonics and optoelectronics. This study reveals the potential of Ba3-xGa2O6:xBi3+ as a promising candidate for various photonic and optoelectronic applications, and demonstrates the use of the material in double-sided laser printing for three-dimensional optical imaging.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Hemin Wang, Yanling Hao, Lele Xiang, Xiaosi Qi, Lei Wang, Junfei Ding, Yunpeng Qu, Jing Xu, Wei Zhong
Summary: This study designed Fe3O4-FeCO3/MWCNTs/RGO MCNCs composites and fabricated large-scale samples using hydrothermal and freeze-drying methods. The microstructural investigation showed that these materials had a mixed-dimensional structure, which improved impedance matching features, polarization, and conduction loss abilities, leading to significantly enhanced electromagnetic absorption properties.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Zhenshan Yu, Hao Chen, Xuequan Chen, Yu-Sheng Lin
Summary: This study presents a silicon dielectric metamaterial (SDM) composed of two outer symmetric semi-circular rings and two inner symmetric split-ring resonators (SRRs). The electromagnetic responses of the SDM device in different modes were studied through numerical simulations and experiments. Increasing the structure height of the SDM device resulted in red-shifted resonances and stronger intensities. This study provides a new design strategy for the development of frequency filtering, polarization switching, and resonance modulation characteristics in THz-wave applications.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Yiming Qi, Na Zhang, Meng Zong, Yangxianzi Liu, Weixing Chen
Summary: This study prepares dielectric/carbon fiber based nanocomposites wave-absorbing materials using liquid diffusion and high temperature carbonization strategies. By tuning the element type, drying mode, and filling amount, the electromagnetic parameters and absorbing properties can be adjusted. The best synthesized sample shows excellent absorbing performance, making it suitable for a wide range of electromagnetic wave absorption applications.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Carlos D. Gonzales-Lorenzo, T. K. Gundu Rao, Alberto A. Ccollque-Quispe, Jorge Ayala-Arenas, Monise B. Gomes, Betzabel N. Silva-Carrera, Roseli F. Gennari, Valeria S. Pachas, F. Monzon-Macedo, H. Loro, Jose F. D. Chubaci, Nilo F. Cano, Rene R. Rocca, Shigueo Watanabe
Summary: In this study, CaSiO3 doped with different ppm of Eu was synthesized using the devitrification method. Various physical properties were analyzed, revealing that the intensity and temperature of the high-temperature TL peak increased with higher dopant amounts. Fluorescence measurements indicated the presence of Eu2+ and Eu3+ ions in the samples. EPR spectra confirmed the existence of two defect centers.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Yanning Qu, Xinyang Li, Mei Cui, Renliang Huang, Wanquan Ma, Yunting Wang, Rongxin Su, Wei Qi
Summary: In this study, a new molybdenum disulfide/N,S-doped carbon quantum dots (MoS2/N,S-CQDs) heterojunction with enhanced light absorption and electrons transfer di-functional properties was constructed via a facile one-pot hydrothermal method. The heterojunction showed remarkable efficiencies in degrading methylene blue (MB) and malachite green (MG) in an actual water system under simulated sunlight irradiation. The facile synthetic technique and effective multifunctional properties of the composite have the potential for further research and industrial applications.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Jiayi Wang, Penggang Ren, Xueyan Zhao, Zhengyan Chen, Yanling Jin, Zengping Zhang
Summary: In this study, a novel homojunction photocatalyst was developed by combining defective g-C3N4 and flaked g-C3N4, which showed excellent degradation performance and cycling stability, and exhibited practicality in several simulation experiments.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Jing Yan, Xiaoxiao Zhao, Weixing Chen, Panbo Liu
Summary: This research presents a self-templated strategy to prepare a spherical superstructure of carbon nanorods through material modification and pyrolysis. The resulting material exhibits a large controllable radius of curvature and shows excellent microwave absorbing properties due to its high specific surface area and mesoporous structure.
MATERIALS RESEARCH BULLETIN
(2024)
Review
Materials Science, Multidisciplinary
Qinglin Zeng, Zepeng Lv, Shaolong Li, Bin Yang, Jilin He, Jianxun Song
Summary: Liquid metal batteries possess stable safety performance, high rate performance, and thermal stability. The electrolyte, an important component of the battery, plays a significant role in achieving these remarkable performance characteristics. This paper reviews the important research progress of liquid metal batteries electrolyte and discusses the influence of different electrolyte types on energy efficiency. It also highlights the limitations and challenges of existing electrolytes and proposes key development directions for liquid metal electrolytes.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Song Wu, Junli Wang, Xuanbing Wang, Di Jiang, Jinlong Wei, Xiaoning Tong, Zhenwei Liu, Qingxiang Kong, Naixuan Zong, Ruidong Xu, Linjing Yang
Summary: In this study, a composite electrode composed of Ti/TiH2/beta-PbO2_Mn3O4@C was fabricated and investigated for zinc electrowinning. The composite electrode exhibited low overpotential, Tafel slope, icorr, and high voltage stability, outperforming most reported Ti-based PbO2 electrode materials. The excellent catalytic activity can be attributed to the low resistance and porous interlayer of TiH2 nanosheets, as well as the addition of Mn3O4@C micro-flakes to the active layer.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
E. Tsoutsoumanos, T. Karakasidis, N. Laskaris, P. G. Konstantinidis, G. S. Polymeris, G. Kitis
Summary: This study investigates the correlation between nanocrystal dimensions and thermoluminescence signal magnitude through simulations conducted in Python. Two mathematical models, OTOR and IMTS, were used to derive theoretical luminescence signals. The obtained results were compared with experimental data and a thorough comparative discussion was conducted.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Vishnu Aggarwal, Sudhanshu Gautam, Aditya Yadav, Rahul Kumar, Bipul Kumar Pradhan, Brajesh S. Yadav, Govind Gupta, Senthil Kumar Muthusamy, Sumeet Walia, Sunil Singh Kushvaha
Summary: Recently, there has been a great demand for highly responsive photodetectors that can detect a wide range of wavelengths. Researchers have successfully fabricated a broadband metal-semiconductor-metal photodetector by integrating sputtered Bi2Se3 with laser molecular beam epitaxy grown GaN film. This photodetector shows high responsivity in both the ultraviolet and near-infrared regions.
MATERIALS RESEARCH BULLETIN
(2024)
