Article
Chemistry, Physical
Samuel M. Pennell, Jacob B. Mack, David C. Dunand
Summary: This study investigates the effects of alloying Fe with 25 at% Co or 30 at% Cu on freeze-cast lamellar foams. It is found that Fe-25Co alloy can slow down foam sintering and densification, while Fe-30Cu alloy leads to severe sintering and densification.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Meena Said, Amy E. Hixon
Summary: Characterization of plutonium dioxide (PuO2) and thorium dioxide (ThO2) aging under different temperature and relative humidity conditions revealed significant stability differences between actinide oxides, providing important insights for nuclear forensic applications and fundamental safety and storage concerns. The study used a variety of techniques, including scanning electron microscopy and X-ray diffraction, to analyze the morphological and phase changes in the materials, highlighting the need for further research on the chemical and physical properties of actinide compounds near ambient temperatures and humidities.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Koki Kinami, Yuji Hanada, Masanori Nagao, Akira Miura, Shigeto Hirai, Yuki Maruyama, Satoshi Watauchi, Isao Tanaka
Summary: Sm(O,F)BiS2 superconducting single crystals with various nominal F contents were successfully grown using KI-KCl flux, with a solid solution limit of F at the O-site of less than 20 at%. Despite similar F concentration and c-axis lattice constants, the F concentrations in the single crystals were hardly controlled by nominal F contents, suggesting the presence of an intrinsic stable phase. The superconducting transition temperature increased with increasing nominal F contents within less than 70 at% in the O-site.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Sudipta Mondal, Binita Mondal, Shovan Dan, Durga Paudyal, R. Ranganathan, Chandan Mazumdar
Summary: In this work, the contrasting magnetic behavior of a bimorphic intermetallic compound TbPt3 is reported. The compound undergoes a structural phase transition and changes from a ferromagnetic state to an antiferromagnetic state. However, the antiferromagnetic state is unstable and can be induced to switch to a ferromagnetic state by applying a moderate magnetic field. Theoretical calculations suggest that the magnetic properties of the initial ferromagnetic state can be recovered by applying a magnetic field to the antiferromagnetic state. These findings provide an important opportunity to study the effect of crystal structure on the physical properties of TbPt3.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Optics
Ananya Rout, Sadhana Agrawal
Summary: This paper presents luminescence studies and first principle calculations of a rare earth doped yttrium strontium silicate fluorapatite compound. The experimental characterization confirms the crystal structure and Raman active modes of the synthesized compound. The compound exhibits strong luminescence under UV excitation, and its computational analysis reveals semiconductor behavior and high covalency.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Chemistry, Physical
Reece Emery, Orlando R. Rios, Eric A. Lass, Cameron S. Jorgensen, Dustin A. Gilbert, William R. Meier, Michael R. Koehler, Philip D. Rack
Summary: Al100-x-y-zCexNiyMnz thin films were synthesized via combinatorial sputtering and subsequent annealing to form stable intermetallic systems. Temperature dependent measurements revealed different coefficients of thermal expansion and electronic phase transitions for different phases in the thin films and bulk samples.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
A. Bandyopadhyay, B. J. Sarkar, S. Sutradhar, J. Mandal, P. K. Chakrabarti
Summary: By incorporating Gd3+ ions instead of Ce4+ ions in cerium oxide lattice, improvements were made in its magneto-dielectric properties. Nonlinearity due to magnetic ordering was introduced in the doped sample Ce0.90Gd0.10O2-delta, indicating a transition to ferromagnetic phase. Transmission electron microscopy study revealed important morphological behavior.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Reece Emery, Orlando R. Rios, Michael J. Thompson, David Weiss, Philip D. Rack
Summary: The effect of composition on the crystal structure, phase fraction, film morphology, electrical resistivity, and coefficients of thermal expansion (CTE) of AlxCe100-x thin films was investigated. The measurements of thin film and bulk CTE showed good agreement, confirming the efficacy of the approach. This study demonstrates the potential of combinatorial thin film synthesis and XRD measurement for rapid materials discovery of low CTE aluminum alloys.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Tatyana B. Bekker, Alexey A. Ryadun, Alexey V. Davydov, Vladimir P. Solntsev, Veronika D. Grigorieva
Summary: Single crystals of undoped and rare-earth-doped Ba-12(BO3)(6)[BO3][LiF4] were grown from high-temperature solutions. The luminescence of these crystals at specific excitation wavelengths shows potential for converting LED emissions into white light.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
N. V. Mitroshenkov, A. V. Matovnikov, S. V. Kuznetsov, M. V. Lazutkina, A. A. Volchek, N. A. Konoplin, B. I. Kornev, V. V. Novikov
Summary: In this study, the temperature dependences of heat capacity and lattice parameter of LaF3, (SrF2)0.5(LaF3)0.5, and previously studied SrF2 were experimentally investigated for the first time. The analysis using the Debye-Einstein model revealed anomalies in the C-p and V curves of the solid solution compared to the individual components, with deviations observed at both low and high temperatures. The study found that the disorder in the solid-solution crystal structure is the common reason for these anomalies.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Brandon Wilfong, Vaibhav Sharma, Jared Naphy, Omar Bishop, Steven P. Bennett, Joseph Prestigiacomo, Radhika Barua, Michelle E. Jamer
Summary: The study investigated the effects of post-synthesis annealing temperature on Fe3Ga4 samples, revealing a trend in ISDW-FM transition temperature with changes in unit cell volume. External pressure and crystallographic changes were found to influence the transition temperatures, highlighting the importance of understanding the mechanism and nature of the intermediate ISDW phase for future device applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Eugene N. Kablov, Andrey L. Shilov, Valentina L. Stolyarova, Fedor N. Karachevtsev, Sergey Lopatin, Sergey M. Shugurov, Viktor A. Vorozhtcov
Summary: The thermodynamic properties and vaporization processes of the Gd2O3-HfO2 and Gd2O3-ZrO2 systems were investigated using the Knudsen effusion mass spectrometric method. The results showed that these systems exhibited negative deviations from ideality in terms of thermodynamic properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Joshua P. Smith, Kurt E. Sickafus, Claudia J. Rawn, Cordell Delzer, Ching-Fong Chen, Charles Melcher
Summary: Li-containing garnet compounds have potential as transparent ceramic dual-mode scintillators, with Li5La3Ta2O12 showing promise due to its properties. This study focused on establishing thermal processing conditions for a sol-gel method and consolidating powders to form high-density ceramics. The experiments showed the presence of two cubic Li5La3Ta2O12 garnet phases with different lattice parameters, indicating a remaining excess of Li in the ceramics.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
N. E. Volkova, M. Bazueva, D. T. Aisarinova, A. D. Alkhamova, L. Ya Gavrilova, V. A. Cherepanov, A. Maignan
Summary: The study investigated 96 samples in the Ba1-xPrxFe1-yCoyO3-delta system, establishing the compositional boundaries of stability for three types of crystal structure. The cubic and orthorhombic perovskites' unit cell parameters were refined, and the oxygen content was found to increase with Pr and Fe contents. A pseudo-phase diagram outlining the stability ranges for all three types of complex oxides was generated.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Maya Verma, Amit Tanwar, Divya Haridas, Sandeep Mahajan, Rashmi Menon, Sudhanshu Kumar, K. Sreenivas
Summary: This study investigates the influence of calcination temperature on the structural, dielectric, piezoelectric, and ferroelectric properties of strontium bismuth niobate ceramics. It is found that the sample calcined at 1000 degrees C exhibits the best performance with maximum orthorhombic distortion, minimum phase transition losses, and highest values of piezoelectric charge constant and remnant polarization. The results indicate that calcination temperature has a significant impact on the properties of the ceramics.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Nanoscience & Nanotechnology
V. Archana, J. Joseph Prince, S. Kalainathan
Summary: Hematite nanoparticles were prepared from Moringa oleifera leaf extracts using a green route, showing fast, environmentally friendly, and cost-effective characteristics. Various characterization techniques confirmed the potential of the synthesized nanoparticles in electromagnetic devices, ferromagnet manufacturing, and water treatment applications.
JOURNAL OF NANOMATERIALS
(2021)
Article
Multidisciplinary Sciences
Munusamy Kuppan, Daichi Yamamoto, Genta Egawa, Sivaperuman Kalainathan, Satoru Yoshimura
Summary: The (Bi0.41La0.59)(Fe0.75Co0.25)O-3 films fabricated using pulsed DC sputtering technique demonstrated magnetization reversal by applied electric field, exhibiting hysteresis curves of both ferromagnetic and ferroelectric behavior. The analysis of electric and magnetic domain structures induced by applying a local electric field showed the potential for future high performance magnetic devices with low power consumption.
SCIENTIFIC REPORTS
(2021)
Article
Chemistry, Multidisciplinary
Archana Venkatachalam, Joseph Prince Jesuraj, Kalainathan Sivaperuman
Summary: Magnesium oxide nanoparticles were successfully synthesized using Moringa oleifera leaf extract, exhibiting a pure face-centered cubic structure. Characterization studies confirmed the nanoparticles' potential for various applications, such as dielectric ceramics, thermistors, superconductors, optoelectronic devices, and energy storage. This green synthesis route offers a fast, reliable, eco-friendly, and cost-effective method for producing MgO nanoparticles with promising properties.
JOURNAL OF CHEMISTRY
(2021)
Article
Crystallography
A. Muthuraja, G. Murugesan, U. Reeta Felscia, Beulah J. M. Rajkumar, S. Kalainathan, V Ratchagar
Summary: High quality organic single crystals of 4,4'-DMB were successfully grown using the Bridgman technique, showing single-phase formation without impurities and an optical bandgap of 2.7 eV. Vickers microhardness measurements indicated that the crystal belongs to the soft material category, and studies on laser damage threshold and Z-scan technique were conducted to analyze the optical nonlinear properties of the grown crystal.
JOURNAL OF CRYSTAL GROWTH
(2022)
Article
Chemistry, Multidisciplinary
S. Suba Viveka, T. Logu, N. Ahsan, K. Asokan, S. Kalainathan, K. Sethuraman, Y. Okada
Summary: The impacts of electronic excitations from Au, Ag, and O ion beams on the properties of CGS thin films were studied. The irradiated films showed modifications in crystallinity, surface roughness, and optical properties. The Au-ion-irradiated CGS film exhibited the highest photocurrent and may be suitable for photovoltaic applications.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2022)
Article
Materials Science, Multidisciplinary
Karthikeyan Vijayan, Logu Thirumalaisamy, Run Fa Jonny Qiu, Myeongok Kim, S. P. Vijayachamundeeswari, Kalainathan Sivaperuman, Nazmul Ahsan, Yoshitaka Okada
Summary: CuGaS2 is a promising chalcopyrite semiconductor for thin-film photovoltaic devices. However, deposition at elevated temperatures results in sulfur desorption and the formation of defects. This study investigates the effect of Tellurium doping during deposition on crystallinity and optical properties. The results show improved crystallinity and electrical mobility with Te doping, and a decrease in the optical bandgap energy.
Article
Optics
A. Muthuraja, D. Bharath, G. Murugesan, D. Anbuselvi, S. Kalainathan
Summary: The optical properties and thermal characteristics of the organic single crystal Bioperine (BPN) were studied, and it was found to have high transparency and nonlinear optical parameters, making it suitable for optical switching applications in photonics.
OPTICS AND LASER TECHNOLOGY
(2022)
Review
Energy & Fuels
Karthikeyan Vijayan, S. P. Vijayachamundeeswari, Kalainathan Sivaperuman, Nazmul Ahsan, Thirumalaisamy Logu, Yoshitaka Okada
Summary: This review discusses the importance and innovations of thin-film-based solar cells as a sustainable energy source. It examines the physicochemical properties of thin-film materials deposited via spray pyrolysis and their application in solar cells. The review also analyzes the advancements and pros and cons of copper and non-copper thin film-based photovoltaics. Lastly, it provides insights into the future developments and recycling of thin-film based photovoltaics.
Article
Crystallography
Rajesh Dora Tamiridi, Rajendra Goud, Prabhakaran Subramaniyan, Kalainathan Sivaperuman, Anand Kumar Subramaniyan, Indrajit Charit, Srikant Gollapudi
Summary: Laser shock peening of cold rolled Nitinol generates tensile surface residual stresses and increases surface microhardness. However, at a certain depth, the peened material has lower hardness than the as-received material due to the change in austenitic phase fraction caused by laser interactions.
Article
Crystallography
Nandhini Krishnan, Kalainathan Sivaperuman
Summary: A new organic stilbazolium compound, 4-[2-(3-methoxy-phenyl)-vinyl]-1-methyl-pyridinium(+) iodide(-) (MMPI), was successfully synthesized and characterized. The crystal structure and cell parameters of MMPI were determined using single crystal X-ray diffraction analysis. The synthesized material was confirmed by NMR spectroscopy and FT-IR spectrum analysis. The optical properties and surface characteristics of the MMPI crystal were investigated using various techniques such as optical analysis, chemical etching analysis, AFM, SEM, and Hirshfeld surface analysis. The nonlinear optical parameters and chemical activity of the crystal were also evaluated.
Article
Engineering, Electrical & Electronic
Balachandar Rajagopal Krishnamoorthy, Kalainathan Sivaperuman, Anand Sekar, Senthil Kannan
Summary: Schiff base crystal of 2-Methoxy-N-[4-(dimethyl amino) benzylidene] aniline (2MDA) was synthesized through condensation reaction and optically good quality single crystals were obtained after 7 days of slow evaporation process. Various characterizations confirmed the formation of the title Schiff base, and comparisons with previous reports indicated the formation of the 2MDA crystal. The crystal showed transparency in the range of 480-1100 nm and emitted red light at 625 nm, making it suitable for optical and opto-electronic applications.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Multidisciplinary
Anju Thomas, Logu Thirumalaisamy, Sridharan Madanagurusamy, Kalainathan Sivaperuman
Summary: In this study, SnO2 thin films were deposited through spray pyrolysis and tested for gas sensing at 27℃ (room temperature) towards different gases. The films showed consistently low response of approximately 1 when exposed to various VOCs. Hall measurements were used to determine the type, concentration, and mobility of charge carriers, which were found to hinder its performance at room temperature.
Article
Chemistry, Multidisciplinary
Raji Vinayagamoorthy, Muthurakku Usha Rani, Sivaperuman Kalainathan, Sekar Anand
Summary: A novel third-order stilbazolium derivative single crystal, 4-[2-(4-dimethyl amino-phenyl)-vinyl]-1-methyl-pyridinium bromide (DMSB), was successfully harvested using methanol as a medium, through slow evaporation. The crystal structure of DMSB was confirmed to be monoclinic with centrosymmetric fashion. The DMSB crystal showed potential applications in photonics devices, optical computing, optical switches, and optical limiting, due to its favorable characteristics such as good solubility, molecular structure, absorbance nature, band gap, photoluminescence, and third-order nonlinear susceptibility.
Article
Chemistry, Multidisciplinary
Karthikeyan Vijayan, Logu Thirumalaisamy, S. P. Vijayachamundeeswari, Kalainathan Sivaperuman, Nazmul Ahsan, Yoshitaka Okada
Summary: This study investigates the impact of intermediate band structuring on the efficiency of solar cells using vanadium-incorporated copper gallium sulfide telluride thin films prepared via a chemical spray pyrolysis route. The results show that V - 0.1-incorporated CGST exhibits promising potential as a thin-film absorber layer in solar photovoltaic technology, with increased efficiency attributed to a decrease in bandgap.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Physical
Thangavel Ravikumar, Logu Thirumalaisamy, Sridharan Madanagurusamy, Sivaperuman Kalainathan
Summary: This study investigated the gas sensing capabilities of Mn-doped zinc ferrite thin film nanorods and found that ZFM1 showed high sensitivity and good selectivity and recovery towards TMA. The 0.1 Mn doped ZnFe2O4 film exhibited greatly enhanced gas sensing properties. This research demonstrates the effectiveness of ZF thin films in detecting TMA in the atmosphere.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
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)
