Article
Chemistry, Physical
Jagrutiba Gohil, Vibhutiba Jethwa, Hirenkumar Shantilal Jagani, Ankit G. Dalvaniya, Vivek M. Pathak
Summary: In this study, SnSe single crystals were grown using the direct vapour transfer (DVT) technique. The elemental proportion and 2D surface structure of the grown crystals were analyzed using Energydispersive X-ray analysis (EDAX) and Scanning electron microscopy (SEM). The crystal system of SnSe was confirmed to be orthorhombic, and its high crystallinity was observed through high resolution transmission electron microscopy (HRTEM) and Powder X-ray diffractometer (XRD). The photodetection capability of SnSe was evaluated, showing high photoresponsivity and photo-detectivity under different light sources.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
D. Jini, Awais Ahmad, M. Aravind, S. Ajitha, C. Parvathiraja, Almutairi Tahani Mazyad, Karami Abdulnasser Mahmoud, Shafaqat Ali
Summary: Single crystals of pure and Congo red dye-doped Magnesium Sulphate Heptahydrate were grown using slow evaporation technique. The crystals were characterized for their structural parameters, functional groups, optical properties, and electrical properties. The inclusion of CR dye enhanced the thermal stability and antibacterial activity of the crystals.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
Article
Chemistry, Physical
Lin Yue, Yunmeng Cao, Yonghui Han, Zaixing Li, Xiao Luo, Yanfang Liu
Summary: The magnetic metal-organic framework composite Fe3O4@Sn-MOF with core-shell structure was successfully prepared by hydrothermal synthesis, showing excellent photocatalytic activity in degrading AR3R dye, attributed to effective charge separation, strong photo-response, and rich active sites.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Dongwon Lee, T. T. T. Trang, Yoon-Uk Heo
Summary: This study clarifies the formation mechanisms of twin and antiphase boundaries (APBs) in MnAl2O4 spinel oxide using advanced transmission electron microscopy. It is found that MnAl2O4 has an inverse-spinel structure. The asymmetric twin structure is formed through dislocation climb-up and continuous shearing on the {111} plane, while APBs form through dislocation climb-down on a (Mn, Al)-containing {111} plane. The detailed lattice distortion induced by dislocation climb-down and the formation of APBs is analyzed. This study provides a detailed understanding of twin and APB formation mechanisms in inverse-spinel MnAl2O4.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Physics, Multidisciplinary
K. S. Nivedhitha, R. Venkatesh, N. R. Banapurmath
Summary: Nanostructured magnesium-based metallic alloys prepared by high-energy ball milling technique show improved hydrogen storage properties. Substitution of niobium changes the structure and reduces the grain size, resulting in lower activation energy.
Article
Chemistry, Physical
A. S. Rogachev, S. G. Vadchenko, D. Yu. Kovalev, N. A. Kochetov, M. Zhukovskyi, T. Orlova, A. S. Mukasyan
Summary: The stability of high-entropy alloys is crucial for their fundamentals and practical applications. This study experimentally investigated the phase and microstructural evolution of a near-equiatomic Co0.18Cr0.20Fe0.24Ni0.19Ti0.19 alloy during long-term isothermal annealing. The alloy exhibited a stable composition after prolonged heat treatment, with released Ti atoms acting as getters for oxygen and forming sub-micron TiOx particles.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Debasrita Bharatiya, Biswajit Parhi, Sarat K. Swain
Summary: In this study, a GO-based ZnO, CuO, and Ag2O mixed ternary nanostructured composite was developed using a simple sol-gel synthesis approach, showing enhanced dielectric properties and potential charge storage applications. Physio-chemical characterization techniques were used to study the properties of the composite, highlighting its remarkable dielectric and charge storage capabilities.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
R. Ranjani, T. Sivanesan, S. Rekha, N. Padmavathi
Summary: An organic crystal L-Arginium 5-Sulfosalicylate (A5SA) was synthesized using a slow evaporation method. The crystal was characterized by X-ray diffraction, UV absorbance, and fluorescence emission spectroscopy. It exhibited orange luminescence and a matched optical bandgap value according to Tauc's Plot.
Article
Chemistry, Inorganic & Nuclear
Maria O. Enikeeva, Olga V. Proskurina, Aleksandr A. Levin, Alexandr V. Smirnov, Vladimir N. Nevedomskiy, Victor V. Gusarov
Summary: Nanopowders with a rhabdophane structure were synthesized by hydrothermal-microwave method. Various characterization techniques were used to study the nanopowders, revealing the formation of rod-like single-crystal nanoparticles with isolated pores inside. A mechanism of coherent-accommodative intergrowth of nanoscale clusters with rhabdophane structure was proposed to explain the formation of these nanoparticles.
JOURNAL OF SOLID STATE CHEMISTRY
(2023)
Article
Chemistry, Physical
Muhammad Burhanuddin, Muhammad Khalid, M. G. B. Ashiq, Hafsa Najam, Mohammed S. Alqahtani, Thamraa Alshahrani, Arshi Anwar, Aneeqah Sabah, M. Asadullah Nadir
Summary: In this study, a series of LaxBi2_xSn2O7/SnO2(8-Bi2O3) nanostructures were synthesized using sol-gel technique. The presence of hybrid phase metal oxides was confirmed by XRD analysis and TEM results. The formation of heterojunction with multifunctional pyrochlore increased the dielectric constant and quantum efficiency of the material. Electrical parameters such as AC conductivity, impedance, dielectric constant, electric modulus, and tangent loss were studied using an impedance analyzer meter. The relaxation mechanisms at different polarization stages in the applied frequency range were discussed. The appearance of relaxation peaks at different frequencies indicates that the prepared hybrid nanocomposites are suitable for energy storage devices across a wide range of frequencies.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
A. A. Zaitsev, I Konyashin, P. A. Loginov, E. A. Levashov, A. S. Orekhov
Summary: In situ annealing of a FIB lamella obtained from nanostructured WC-Co hardmetal in a transmission electron microscope at 950 degrees C results in the dissolution of some Co interlayers and small Co pools. Significantly, abnormal fast Co diffusion at WC/Co grain boundaries is observed, presumably due to the combined effect of high temperature and electron irradiation by an electron beam in the transmission electron microscope.
Article
Materials Science, Multidisciplinary
E. Lawrence Bright, J. E. Darnbrough, D. T. Goddard, I. Griffiths, M. Cattelan, R. Springell
Summary: This study investigates the rate and mechanism of uranium mononitride oxidation, providing insights into fuel surface oxidation during manufacture and storage. The study reveals the formation of a UO2+xNy layer and a U2N3 interlayer on the surface of an epitaxial (001) UN thin film. This topotactic formation is predicted to play a critical role in passivation during long-term structural investigation.
Article
Chemistry, Multidisciplinary
Tae-Hoon Kim, Haijun Zhao, Phuong-Vu Ong, Brandt A. Jensen, Baozhi Cui, Alexander H. King, Liqin Ke, Lin Zhou
Summary: The study measured the dynamics of Skyrmion lattice formation from the conical phase, finding that the Avrami equation accurately describes the transition process with an initial Avrami constant around 1. An energy barrier with a square-root dependence on temperature and a quadratic dependence on the magnetic field was established, paving the way for precise manipulation of topological spin structures.
Article
Chemistry, Physical
A. Kostka, D. Naujoks, T. Oellers, S. Salomon, C. Somsen, E. oeztuerk, A. Savan, A. Ludwig, G. Eggeler
Summary: In this study, the process of layer growth in the Ni-Al system was investigated through experiments and observations. The results showed that a polycrystalline aluminide layer formed in the early stage of the solid-state reaction, followed by preferential grain growth in the later stage. It was also found that two different aluminide phases formed simultaneously. In-situ TEM study revealed the time dependence of layer growth rate. The findings provide insights into the growth mechanism of reaction layers and suggest areas for further research.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Nanoscience & Nanotechnology
Rongzhi Dong, Yong Zhao, Yuqi Song, Nihang Fu, Sadman Sadeed Omee, Sourin Dey, Qinyang Li, Lai Wei, Jianjun Hu
Summary: This study proposes a deep learning algorithm for predicting the XRD spectrum based on the composition of a material, which can be used for structural analysis and property prediction. The algorithm shows promising performance in XRD prediction and has potential applications in high-throughput materials screening.
ACS APPLIED MATERIALS & INTERFACES
(2022)
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)