Article
Materials Science, Multidisciplinary
Xiaotong Chen, Xuefeng Lu, Junqiang Ren, Hongtao Xue, Fuling Tang, Yutian Ding
Summary: The addition of an appropriate amount of Co atoms in the grain boundary region of nano-polycrystalline Ni can enhance the material's tensile strength through solid solution strengthening. However, excessive introduction of solute atoms can lead to the destruction of grain boundary stability and accelerate material yielding. The dislocations are distributed in a grid at the grain boundaries, and their number and length increase with increasing strain, forming a large number of entanglements. The interaction between Shockley dislocation and other dislocations forms a more stable dislocation structure, greatly enhancing the strength of the system.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Nanoscience & Nanotechnology
Zhenchang Hou, Zhihua Nie, Zhichao Liu, Jun Gao, Fang Hao, Chengwen Tan, Yandong Wang
Summary: An as-cast Ni81W10Al9 alloy with remarkable mechanical properties was developed by adjusting the alloying element with appropriate enthalpy of mixing. The yield strength of the alloy reached about 640 MPa, which is approximately three times higher than its Al-free counterpart. Extensive L12 phase nanoscale precipitations were generated in the alloy, providing strong strengthening effects by blocking dislocation sliding.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Chemistry, Physical
Yong Joo Kim, Jong Woong Park, Woo Chul Kim, Jeong Soo Kim, Won Tae Kim, Do Hyang Kim
Summary: The addition of boron improves the glass forming ability and thermal stability of Ti35Zr15Ni40Cu10 metallic glass, leading to outstanding superelasticity after crystallization. Boron plays a significant role in maintaining a stable supercooled liquid and refining grain size in the alloy.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Yao-Tien Tseng, Guan-Xun Wu, Jing-Chie Lin, Yean-Ren Hwang, Da-Hua Wei, Shou-Yi Chang, Kun-Cheng Peng
Summary: Microanode-guided electroplating was used to prepare cobalt-iron-nickel alloying micro-pillars, and the effect of bath composition on their properties was investigated. The micro-pillars showed a smooth morphology with different compositions and nanocrystalline structures.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Bo Shi, Chen Li, Ruoyu Han, Qifan Li, Pengfei Li, Xi Chen
Summary: In this study, Fe-Ni and Fe-Ni-Co nanocrystalline coatings were successfully synthesized through electrical explosion method, which exhibit low porosity, different surface morphologies, and good soft magnetic properties. The results indicate that the addition of Co can effectively reduce the coercivity of the coatings. This study is of great importance for the understanding and application of electrical explosion in nanomaterial synthesis.
Article
Chemistry, Physical
Te Niu, Hongyang Li, Yuhang Wei, Zhanming Zhou, Ying Liu
Summary: A new multi-principal Al-Co-Ni-Cu alloy with high damping and good corrosion resistance was prepared. The effects of the Al content on the microstructure, damping properties, corrosion behavior, and mechanical properties of AlxCoNi2Cu (x = 0, 0.1, 0.3, and 0.5) alloys were studied. The Al0.5CoNi2Cu alloy exhibited a significant increase in internal friction and lower corrosion rate, demonstrating promising damping and corrosion resistance properties for marine applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Energy & Fuels
Yi Ren, Yujia Bai, Genxiang Wang, Yijian Liu, Chuancheng Mou, Jiayu Chen, Baohuan Wei, Hui Wang, Yuhan Sun
Summary: An efficient electrocatalyst, Cu-Ni alloy nanoparticles grown on nitrogen-doped carbon nanotubes, was prepared for electrochemical CO2 reduction. The optimized catalyst showed a high CO Faradaic efficiency of 94.8% and a current density of 26.6 mA cm(-2). This work enriches the research on highly efficient CO2 electroreduction catalysts.
Article
Materials Science, Coatings & Films
Peter Nagy, Laszlo Peter, Zsolt Czigany, Nguyen Quang Chinh, Jeno Gubicza
Summary: A Co-Fe-Ni-Zn multi-principal element alloy (MPEA) film with a thickness of 2.5 μm is electrodeposited, exhibiting a nanocrystalline microstructure with an average grain size of 12 nm. The majority of the film has a face-centered cubic (fcc) structure, with small fractions of body-centered cubic (bcc) and amorphous phases. The coating demonstrates a superior hardness of 9.2 and an elastic modulus of 197 GPa, which can be attributed to the small grain size and the presence of nanocrystalline bcc and amorphous minority phases. This study highlights the capability of electrodeposition in producing MPEA layers with desired composition and outstanding hardness.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Chemistry, Physical
Zhenyu Wang, Zheng Chen, Yu Fan, Jiachun Shi, Yuyu Liu, Xiao Shi, Jie Xu
Summary: A single-phase nanocrystalline Ni-ZrNbMoTa alloy with a grain size of below 10 nm was prepared by 30 h ball milling, showing good thermal stability during high-temperature annealing. The stability of the nanocrystalline alloy at low alloying levels and/or low temperatures is attributed to grain boundary segregation.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Shao-yu Yen, Yu-chen Liu, Shun-hsiang Chu, Che-wei Chang, Shih-kang Lin, Ming-Hung Tsai
Summary: The Al10Co19Cr16Fe20Ni35 high entropy alloy was fabricated and characterized using transmission electron microscopy and CALPHAD method. The microstructure consisted of a face-centered cubic (fcc) phase matrix with B2 precipitates. The designed alloy showed a product of ultimate tensile strength and elongation of 38 GPa.%, which was among the highest in the Al-Co-Cr-Fe-Ni systems. The precipitation strengthening mechanism was evaluated using the Ashby-Orowan model. The high strength and high elongation in the designed alloy resulted from the B2 precipitate-strengthened fcc microstructure.
Article
Engineering, Chemical
Qiuyu Chen, Shuhua Liang, Hui Zhang, Dongxue Liu, Longchao Zhuo
Summary: A novel method combining chemical co-precipitation and hydrogen reduction was proposed to synthesize nanopowders of W-10wt.%Ni in this study. The average grain size of NiW nanopowders was found to be 18-40 nm, and the addition of Ni influenced the diffusion coefficient, leading to variations in the sintering structure. The form of NiW intermetallic compound inhibited the grain growth of nanopowder.
ADVANCED POWDER TECHNOLOGY
(2021)
Article
Chemistry, Physical
Ao Fu, Yuankui Cao, Zhonghao Xie, Jian Wang, Bin Liu
Summary: A novel non-equiatomic high entropy alloy (HEA) Al15.85Fe11.15Co32.11Cr10.76Ni30.13 was fabricated using a powder metallurgy method. The HEA exhibits a dual-phase microstructure consisting of face-centered-cubic (FCC) and body-center cubic (BCC) phases. It possesses high compressive yield strength, fracture strength, fracture strain, and strength at high temperature due to the uniform dispersion of L12 and B2 nanoprecipitates in the FCC and BCC phases, respectively. This finding provides guidance for the development of high-performance structural materials with a balance of strength and ductility for industrial applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Nanoscience & Nanotechnology
Bowen Zhang, Zhenyu Hong, Hongliang Zhao, Na Yan, Liang Hu
Summary: Electromagnetic levitation (EML) was used to investigate the microstructures, precipitated phase characteristics, properties, and strengthening mechanisms of Cu-0.2Be-1.6Co-1.6Ni alloy with different undercooling conditions. The microstructure of the alloy consisted of dendrites and slender-strip precipitates. Under EML, the precipitates transformed from a alpha(Co) phase to a metastable gamma ' phase. The microhardness and electrical conductivity increased with enhanced undercooling due to solute precipitation and refined precipitates.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Nanoscience & Nanotechnology
Zhe Su, Shan Yi, Wanyu Zhang, Liying Tian, Yayun Zhang, Shenghu Zhou, Bo Niu, Donghui Long
Summary: This study successfully synthesized ferromagnetic Fe-Co-Ni alloy/carbon composites using a direct carbothermal reduction method, achieving high-attenuation electromagnetic wave absorption in the C-band. The homogeneous dispersion of alloy elements in the solid-solution precursor enables excellent electromagnetic properties and triggers synergistic electromagnetic dissipation effects.
ADVANCED ELECTRONIC MATERIALS
(2023)
Article
Energy & Fuels
Megha Goyal, Preeti Dahiya, Shubham Kumar, Tapas Kumar Mandal
Summary: Mixed metal hydroxides Ni0.7Co0.2Mn0.1(OH)2 were synthesized via co-precipitation method using chloride, nitrate, acetate, and sulphate salts. The synthesized hydroxides exhibited high specific surface area, pore volume, and specific capacity, making them suitable for battery electrode materials in practical applications.
JOURNAL OF ENERGY STORAGE
(2023)
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)