Article
Chemistry, Physical
Renpeng Yang, Xiaogang Yu, Heng Li, Chao Wang, Chengwei Wu, Wei Zhang, Weihong Guo
Summary: Mg2+ substitution can increase the Curie temperature and specific saturation magnetization of the nanoparticles within a certain range, leading to improved heating efficiency and low cytotoxicity.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Inorganic & Nuclear
Xiaogang Yu, Renpeng Yang, Chengwei Wu, Bo Liu, Wei Zhang
Summary: Zn0.6Mg0.4CrxFe2-xO4 (0 ≤ x ≤ 0.4) nanoparticles with a spinel structure were synthesized using a hydrothermal technique. The doping of Cr3+ ions increased the saturation magnetization but decreased the Curie temperature. The nanoparticles also showed potential in enhancing image contrast and inducing hyperthermia under a safe alternating magnetic field.
Review
Materials Science, Ceramics
Xiaogang Yu, Shuaiwen Ding, Renpeng Yang, Chengwei Wu, Wei Zhang
Summary: Magnetic induction hyperthermia is a new method for malignant tumor therapy that focuses on improving heating efficiency through increasing saturation magnetization and initial susceptibility of magnetic nanoparticles, adjusting particle size and magnetocrystalline anisotropy constant, and selecting an appropriate Curie temperature for self-regulation.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Santuan Zhao, Kaili Zhang, Zilin Zhang, Xiaofang Li, Bianyun Cai, Guangda Li
Summary: The novel magnetic cement shows good hyperthermia ability, enhanced radiopacity, non-toxicity to cells, and promotes cell adhesion and spreading.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Ali Osman Ayas, Ekin Secilmis, Ahmet Ekicibil
Summary: A new approach for hyperthermia method based on the magnetocaloric effect has been proposed in this work to solve possible negative consequences of the conventional method. By determining appropriate properties of magnetocaloric materials for hyperthermia method, practical use of this new approach can be achieved.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Chemistry, Physical
Zia Ur Rehman, Mohsan Nawaz, Hameed Ullah, Imad Uddin, Salma Shad, Elsyed Eldin, Razan A. Alshgari, Aboud Ahmed Awadh Bahajjaj, Waqas Ul Arifeen, Muhammad Sufyan Javed
Summary: In this study, nickel nanoparticles (Ni-NPs) were synthesized using a unique approach called microemulsion. SEM, TEM, EDX, and XRD techniques were employed to investigate the morphology and structures of the synthesized material. The Ni-NPs exhibited superior electrical conductivity and interconnected nanostructures, facilitating the transfer of electrons from electroactive components and providing numerous channels for ion diffusion and additional active sites. As a positive electrode for supercapacitors (SC), Ni-NPs showed excellent charge storage capability, with a dominant capacitive charge storage of 72.4% at 10 mV/s and a maximum capacitance of 730 F/g at 1 A/g. Furthermore, the Ni-NP electrode retained 92.4% of its capacitance even after 5000 cycles, suggesting potential applications in the field of renewable energy. This study presents a new method for producing high-rate next-generation electrodes for supercapacitors.
Article
Multidisciplinary Sciences
Subrat Kumar Das, Arkaprava Das, Mattia Gaboardi, Simone Pollastri, G. D. Dhamale, C. Balasubramanian, Boby Joseph
Summary: Cu-Ni metallic alloy nanoparticles synthesized through direct-current transferred arc-thermal plasma assisted vapour-phase condensation exhibit significantly enhanced stiffness compared to their bulk counterparts, attributed to the retention of a large amount of local strain due to alloying and the perfect miscibility of the elemental components during the thermal plasma synthesis process.
SCIENTIFIC REPORTS
(2021)
Article
Physics, Applied
V. M. Andrade, N. R. Checca, V. G. de Paula, K. R. Pirota, A. L. Rossi, F. Garcia, A. Vovk, S. A. Bunyaev, G. N. Kakazei
Summary: In this study, Fe2CrAl Heusler nanoparticles with good crystallographic features were obtained using pulsed laser deposition technique. The structural, morphological, and magnetic properties of these nanoparticles were investigated, revealing slightly off-stoichiometric grains with two distinct morphologies. The magnetic behavior was found to be influenced by chemical disorder and inhomogeneity. The nanoparticles exhibited a superparamagnetic behavior and a Gilbert damping comparable to standard materials used in magnonics applications. The complex magnetostructural coupling in the nanoparticle system was discussed in comparison with the stoichiometric Fe2CrAl bulk target behavior.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Multidisciplinary Sciences
Jae-Hyeok Lee, Bosung Kim, Yongsub Kim, Sang-Koog Kim
Summary: The magneto-thermal effect, which converts magnetostatic energy to heat from magnetic materials, has potential therapeutic usage in hyperthermia treatments. However, the limited heating from magnetic nanoparticles has challenged its realization. This study explores a new concept of magneto-thermal modality with fast resonant spin-excitation for efficient heat generation and wireless controllability.
SCIENTIFIC REPORTS
(2021)
Article
Biochemistry & Molecular Biology
Ashfaq Ahmad, Hassan Akbar, Imran Zada, Faiza Anjum, Amir Muhammad Afzal, Subhan Javed, Muhammad Muneeb, Asghar Ali, Jeong Ryeol Choi
Summary: In this study, gadolinium was doped in lanthanum strontium manganite nanoparticles to tune the Curie temperature and enhance the specific absorption rate for self-controlled magnetic hyperthermia. The successful doping of gadolinium and the preparation of magnetic core nanoparticles were confirmed. The Curie temperature of the nanoparticles decreased with increasing gadolinium doping, making them promising materials for hyperthermia applications.
Article
Chemistry, Physical
Luyi Li, Benzhen Tang, Weijie Fu, Ying Lu, Yunqing Fu, Ding Ding, Lei Xia, Peng Yu
Summary: The study focuses on the effect of Fe addition on the Curie temperature and magnetic entropy change of Gd-based amorphous alloys. It is found that adding 5% Fe can increase the Curie temperature to 281 K, mainly due to the enhanced 3d-3d interaction of transition elements caused by Fe addition. The maximum value of magnetic entropy change is 3.24 J/(kg • K) under a field of 5 T. The results are expected to provide guidance for improving the room temperature magnetic entropy change of Gd-based amorphous alloys.
Article
Chemistry, Physical
Sho Goto, Hiroaki Kura, Masahito Tsujikawa, Masafumi Shirai, Keita Ito, Takashi Suemasu, Koki Takanashi, Hideto Yanagihara
Summary: Tetragonally ordered Fe2Ni2N powder was synthesized successfully from L1(0)-FeNi using a nitrogen topotactic reaction. The material exhibits high magnetic anisotropy energy and has a thermal decomposition temperature of 667 K and a Curie temperature of 441 K.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Physics, Condensed Matter
Junaid Ul Ahsan, Harkirat Singh
Summary: The effects of nanoparticle size and core-shell ratio on the magnetization of Co@Fe spherical nanoparticles were studied, showing a decrease in ordering temperature with an increase in particle size. Additionally, the magnetization of the core-shell NPs was observed to increase with an increase in interfacial exchange energy between Fe and Co magnetic moments.
PHYSICA B-CONDENSED MATTER
(2022)
Article
Materials Science, Multidisciplinary
N. R. Overman, X. Li, M. J. Olszta, E. K. Nickerson, C. T. Overman, S. N. Mathaudhu, G. J. Grant, S. A. Whalen
Summary: The study examined the microstructural evolution from compacted Cu and Ni powders to a consolidated Cu0.5Ni0.5 alloy, showing stages of deformation and porosity reduction leading to significant hardness improvement in the final alloy. This work demonstrates the potential of shear deformation during powder densification to broaden property outcomes in bulk materials.
MATERIALS CHARACTERIZATION
(2021)
Article
Optics
Mizue Mizoshiri, Tomohide Hayashi, Junya Narushima, Tomoji Ohishi
Summary: This paper presents a technique for directly writing patterns of copper, nickel, and copper-nickel alloy on glass substrates using femtosecond laser pulses. The study shows that the concentration ratio of copper to nickel in the alloy can be controlled by adjusting the concentration of glyoxylic acid copper-nickel mixed complex.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Chemistry, Physical
J. Zamora, T. Bautista, N. S. Portillo-Velez, A. Reyes-Montero, H. Pfeiffer, F. Sanchez-Ochoa, H. A. Lara-Garcia
Summary: Experimental and DFT studies were conducted on the structural, magnetic, and optical properties of RFeO3 perovskites. The perovskites exhibited an orthorhombic crystal structure and weak ferromagnetic behavior. They were confirmed to be semiconductors with a bandgap of approximately 2.1 eV.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xianxiang Lv, Jing Jin, Weiguang Yang
Summary: By depositing TiN and TiO2 surface layers on AlSi films, the electrochemical performance of silicon-based anodes can be significantly improved, suppressing volume expansion and promoting the formation of a stable SEI layer.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Sharafat Ali, Haider Ali, Syedul Hasnain Bakhtiar, Sajjad Ali, Muhammad Zahid, Ahmed Ismail, Pir Muhammad Ismail, Amir Zada, Imran Khan, Huahai Shen, Rizwan Ullah, Habib Khan, Mohamed Bououdina, Xiaoqiang Wu, Fazal Raziq, Liang Qiao
Summary: The construction and optimization of redox-heterojunctions using a bifunctional phosphate as an electron-bridge demonstrated significant improvements in photo catalytic activity, including enhanced dispersion, reduced interfacial migration resistance, and increased abundance of active-sites.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ren-Ni Luan, Na Xu, Chao-Ran Li, Zhi-Jie Zhang, Yu-Sheng Zhang, Jun Nan, Shu-Tao Wang, Yong-Ming Chai, Bin Dong
Summary: Extensive research has revealed that oxygen evolution reaction (OER) in alkaline conditions involves dynamic surface restructuring. The development and design of sulfide/oxide pre-catalysts can reasonably adjust the composition and structure after surface reconstruction, which is crucial for OER. This study utilized a simple two-step hydrothermal method to achieve in situ S leaching and doping, inducing the composition change and structure reconstruction of CoFe oxides. The transformed FeOOH and CoOOH exhibited excellent OER activity and could be easily mass-produced using low-cost iron based materials and simple methods.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jun'an Lai, Daofu Wu, Peng He, Kang An, Yijia Wang, Peng Feng, WeiWei Chen, Zixian Wang, Linfeng Guo, Xiaosheng Tang
Summary: Zero-dimensional organic-inorganic metal halides (OMHs) are gaining attention in the fabrication of light-emitting diodes due to their broad emission band and high photoluminescence quantum yield. This work synthesized a zero-dimensional organic tetraphenylphosphonium bismuth chloride (TBC) that showed efficient blue light emission, with the emission mechanism attributed to the transition of Bi3+ ions. White light-emitting diodes (WLEDs) were fabricated using TBC, along with green-emitting and red-emitting single crystals, achieving single-component white emissions. These findings demonstrate the different emission mechanism of ns2 ions-based OMHs and highlight the potential of bismuth-based OMHs in WLEDs applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xuewei Liang, Yunhai Su, Taisen Yang, Zhiyong Dai, Yingdi Wang, Xingping Yong
Summary: The revolutionary design concept of high-entropy alloys has brought new opportunities and challenges to the development of advanced metal materials. In this work, AlCrCuFe2NiTix high-entropy flux cored wires were prepared by combining the design idea of a high-entropy alloy with the characteristics of flux cored wire. AlCr-CuFe2NiTix high-entropy surfacing alloys were prepared using gas metal arc welding technology. The wear properties of the alloys were analyzed, and the phase composition, microstructure, strengthening mechanism, and wear mechanism were discussed. The results show that the alloys exhibit a dendritic microstructure with BCC/B2 + FCC phases. Increasing Ti content leads to the precipitation of Laves phase. The alloys show improved microhardness and wear resistance due to the precipitation of coherent B2 and Laves phases. However, excessive Ti addition results in the increase of Laves phase and reduced wear resistance of the alloys.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
M. Vadivel, M. Senthil Pandian, P. Ramasamy, Qiang Jing, Bo Liu
Summary: This work presents the enhanced photocatalytic and electrochemical performance of g-C3N4 assisted PAA on CoFe2O4 ternary nanocomposites. The incorporation of PAA and g-C3N4 improves the separation efficiency of photogenerated charge carriers, resulting in superior photocatalytic degradation and high specific capacitance values.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Vibhu T. Sivanandan, Ramany Revathy, Arun S. Prasad
Summary: In this study, pure and doped cobalt ferrite nanoparticles were prepared using the sol-gel auto-combustion method with the aid of lemon juice as eco-fuel. The crystal structure, lattice parameter, crystallite size, microstrain, optical parameters, and room temperature magnetic properties of the samples were analyzed. The effect of doping on the magnetic properties was also investigated.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qing Guo, Bowen Zhang, Benzhe Sun, Yang Qi
Summary: This study prepared ZnO films with various nonpolar preferred orientations using conventional chemical bath deposition method and characterized their growth process and mechanism. It was found that the type and concentration of nitrate could control the preferred orientation and surface roughness of ZnO films. Additionally, ZnO films with different preferred orientations exhibited different optical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Chong Zhang, Yan Liu, Zhaoyan Wang, Hang Yang
Summary: In this study, six bimetallic FeCo particles were synthesized via the hydrothermal method at different Fe:Co ratios. The Fe:Co ratio not only modulates the composition of the particles but also influences their structure and magnetic properties. The FeCo alloys showed a transformation from an Fe-based structure to a Co-based structure with increasing Co content. The Fe:Co ratio of 1:1 and 3:1 resulted in particles with the highest and lowest saturation magnetization, respectively.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jianning Zhang, Jing Li, Yiren Wang, Xiaodong Mao, Yong Jiang
Summary: We conducted a study on the formation of ultra-fine Y-Ti-Ta-O nano-oxides in Ta+B micro-alloyed 13CrWTi-ODS alloys using electron microscopy and first-principles calculations. The Y-Ti-Ta-O nano-oxides were found to be mainly Y2(Ti,Ta)2O7, with an average size of 7 nm and a number density of 6.8 x 1023 m-3. Excess boron was found to enhance the adhesion of some low-sigma grain boundaries but weaken the Fe/Y2Ti2O7 interface, while excess tantalum enhanced the Fe/Y2Ti2O7 interface but caused serious degradation of grain boundaries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Yirong Fang, Pei Cheng, Hang Yuan, Hao Zhao, Lishu Zhang
Summary: A new composite system of nitrogen-doped reduced graphene oxide and black phosphorus quantum dots has been developed for tumor therapy, showing improved electrochemical properties and stability. The system generates hydrogen peroxide and hydroxyl radical to effectively kill tumor cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xiufang Qin, Yuanli Ma, Hui Zhang, Ting Zhang, Fang Wang, Xiaohong Xu
Summary: The structure and magnetism of cobalt ferrites after Mn2+-Tb3+ co-doping were studied. Co-doped samples exhibited cubic spinel structure and spherical shape of ferrite nanoparticles. The redistribution of Co2+ and Fe3+ ions between octahedral and tetrahedral sites was observed due to Mn2+-Tb3+ co-doping. The coercivity and magnetization saturation of co-doped samples were significantly improved, leading to a maximum energy product that is 190% higher than that of the un-doped sample.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ho Yeon Lee, Wonjong Yu, Yoon Ho Lee
Summary: Recently, there has been an increasing interest in developing ultra-fine nanostructured electrodes with extensive reaction areas to enhance the performance and low-temperature operation of solid oxide fuel cells. The use of a refined approach involving co-sputtering metal alloys and oxide targets has demonstrated the feasibility of nano-columnar structures in perovskite-based electrodes, expanding the temperature range of thin film electrodes. This study systematically examines the effects of chamber pressure control in the co-sputtering process and identifies the intricate relationship between sputtering pressure and film structure. By fine-tuning the columnar growth in the electrode, significant improvements in performance and thermo-mechanical properties were achieved, resulting in high-performance all-sputtered solid oxide fuel cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qianyun Bai, Xiaoxiao Yan, Da Liu, Kang Xiang, Xin Tu, Yanhui Guo, Renbing Wu
Summary: This study proposes a simple method to develop a non-precious transition metal-based electrocatalyst with high catalytic activity and robustness for the hydrogen evolution reaction. The as-synthesized electrode exhibits a low overpotential and high current density, indicating its potential in energy conversion.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)