Article
Chemistry, Inorganic & Nuclear
D. Sedelnikov, Zh. Kurenbaeva, E. Murashova
Summary: In the RE-Ru-Al systems, a series of isostructural compounds were identified, which have an ordered hexagonal cell structure and include one compound with a mixed rare earth and aluminum site. The crystal structures of these compounds can be described as rows of trigonal prisms and octahedra connecting distorted icosahedra with rare earth atoms at the center.
JOURNAL OF SOLID STATE CHEMISTRY
(2023)
Article
Chemistry, Physical
Subarna Datta, Shovan Dan, Shuvankar Gupta, Sudip Chakraborty, Chandan Mazumdar
Summary: The detailed X-ray diffraction studies of rare-earth based compounds Nd2Fe17-xCrx revealed a negligible thermal expansion coefficient in the Nd2Fe16.5Cr0.5 compound, indicating a potential for zero thermal expansion magnetic systems. The critical analysis showed that all four samples belong to different types of universal magnetic class.
Article
Chemistry, Physical
L. Vedmid, O. Fedorova, V. Balakireva, S. Uporov, E. Sterkhov, S. Belyakov
Summary: The effect of barium substitution for gadolinium in Gd1-XBaXMnO3 on crystal structure, microstructure, magnetic and electrical properties was investigated. Increasing the concentration of barium resulted in a decrease in Mn3+ ions and changes in structural order. Porosity increased and grain size decreased with increasing barium concentration. Electrical conductivity increased up to 1.5 times with a concentration of barium at x = 0.25. The Curie temperature and magnetic properties changed with increasing substitution level. A phase diagram of the evolution of properties during Ba substitution in Gd1-XBaXMnO3 was presented. The magnetic and electrical properties are associated with structural distortions caused by gadolinium substitution with barium.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Sanyukta Ghosh, Umasankar Rout, Krushna Kumari Raut, Anirudha Karati, Gerda Rogl, Peter Franz Rogl, Ernst Bauer, B. S. Murty, Ramesh Chandra Mallik
Summary: Filling the voids of a skutterudite material with suitable electropositive elements can greatly affect the power factor by altering carrier concentration. Doping and filling can further enhance the thermoelectric properties. Electropositive n-type fillers have been successfully used in Co4Sb12. In this study, Fe was substituted as a p-type dopant in S0.15Co4Sb12, resulting in the highest zT value.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Physics, Condensed Matter
A. A. Castro, J. L. Rosas-Huerta, R. Escamilla
Summary: Polycrystalline samples of Gd2Ru2-xMoxO7 were prepared using the molten salt method, with an increase in lattice parameter and XPS valence band intensity observed as the Mo content increases. Theoretical calculations show that Gd2Ru2O7 is a semiconductor with main contributions from Ru4d and O 2p states. Electrical resistivity measurements at low temperatures show a decrease in activation energy with Mo content.
PHYSICA B-CONDENSED MATTER
(2021)
Article
Chemistry, Inorganic & Nuclear
Vishwesh Mishra, Nitish Kumar Sinha, Natesan Thirupathi
Summary: By reacting with Hg(OC(O)CF3)(2), separate reactions of cycloplatinated 2-tolyl- and 2-anisylguanidine complexes yielded a one-dimensional coordination polymer and a discrete tetrametallic complex with different structures and properties. The formation mechanisms and structural characteristics of these products were explained in detail, with important characterization information provided by multinuclear NMR spectroscopy and single-crystal X-ray diffraction studies.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Physical
Ali Rayes, Stephany Zarate-Roldan, Irene Ara, Manel Moncer, Necmi Dege, M. Concepcion Gimeno, Brahim Ayed, Raquel P. Herrera
Summary: Two new organic-inorganic salts have been synthesized and characterized by X-ray diffraction and thermal analysis, with crystal packing driven by various non-covalent intermolecular forces and water molecules acting as assistants in hydrates. Additionally, one compound undergoes a thermally-triggered single-crystal-to-single-crystal transformation upon dehydration, forming a supramolecular solid compound, and both salts exhibit outstanding catalytic properties in the acetalization process.
Article
Chemistry, Physical
Galina M. Kuz'micheva, Liudmila I. Ivleva, Irina A. Kaurova, Evgeny Khramov, Victor B. Rybakov, Maksim E. Doroshenko
Summary: Pure and Tm3+-doped Ca-3(VO4)(2) crystals were grown by the Czochralski method, with X-ray diffraction analysis revealing the crystal compositions and the locations of Tm3+ ions. Spectral analysis showed octahedral coordination for Tm3+ ions and tetrahedral coordination for V5+ ions. The spectral-luminescent properties of CVO:1.0 wt%Tm crystal are consistent with structural results obtained.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Anna S. Tolkacheva, Sergey N. Shkerin, Alexey V. Nikonov, Svetlana V. Pershina, Pavel D. Khavlyuk, Ivan I. Leonidov
Summary: This study discusses the structure, thermal stability, and electronic conductivity of the garnet-type solid solution Ca5Mg4_xCox(VO4)6 synthesized through a solid-state reaction. The cobalt-doped vanadates exhibit high electronic conductivity, while the coefficients of thermal expansion vary at different temperatures.
Article
Materials Science, Multidisciplinary
V. Serpente, M. Mastellone, M. Girolami, A. Bellucci, A. Ranieri, A. Boothby, S. Walsh, G. Lefeuvre, D. M. Trucchi
Summary: An 8-pixel X-ray diamond detector prototype designed for high temperature operation was developed and tested. Tungsten electrodes served as metal-semiconductor contact and showed ohmic behavior. Thermal stress test in helium atmosphere at temperatures ranging from 100 to 240 degrees C revealed minimal evolution of the detector dark current, potentially due to water desorption from the alumina substrate. X-ray photocurrent measurements indicated no significant differences before and after thermal cycles, demonstrating the stability of the prototype even after prolonged operation at high temperature.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Physics, Multidisciplinary
Asim Mantarci
Summary: The study coated In0.4Ga0.6N thin films on GaN/p-Si substrates using radio frequency magnetron sputter under different power levels, and found significant changes in crystal structure and physical parameters corresponding to the applied power values. Different behaviors were observed in optical bandgap, texture coefficient, and optical conductivity of the films under various power levels.
CHINESE JOURNAL OF PHYSICS
(2022)
Article
Chemistry, Inorganic & Nuclear
Subhendu Jana, Gopabandhu Panigrahi, Bikash Tripathy, Sairam K. Malladi, Manish K. Niranjan, Jai Prakash
Summary: This study reports the synthesis and properties of a new quaternary sulfide, Ba3.14(4)Sn0.61(1)Bi2.39(1)S8. The crystal structure of the compound is found to be non-stoichiometric and consists of infinite chains of Sn and Bi, separated by Ba ions. The polycrystalline sample shows characteristics of a semiconductor with a direct bandgap and exhibits extremely low thermal conductivity. The study also includes theoretical calculations on the electronic structure and chemical bonding of the compound.
JOURNAL OF SOLID STATE CHEMISTRY
(2022)
Article
Chemistry, Physical
Maurice Conrad, Thomas Schleid
Summary: Colorless transparent single crystals of new mixed-anionic barium meta-perrhenates were obtained either from aqueous solution or by solid-state synthesis. The compounds crystallize isotypically to orthorhombic LaCl[WO4] with anionic Ba2+ coordination consisting of four halide anions and seven oxygen atoms from five [ReO4](-) tetrahedra. Fast solid-state reactions at 800 degrees C lead to phase pure bulk samples of BaCl[ReO4], which is stable up to its melting point at 753 degrees C.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Ceramics
Yongtao Li, Yongji Li, Xinran Sun, Chun Li, Fanming Zeng, Xuejian Zhang, Jinghe Liu, Huisheng Liu, Zhongmin Su, C. K. Mahadevan
Summary: Large-sized single crystals of NaxK1-xCl:0.01Ce3+ (with x = 0.2, 0.4, 0.5, 0.6 and 0.8) were grown by the Czochralski method and characterized for their structural, mechanical, electrical and optical properties. The Ce3+ doping resulted in increased crystal hardness, electrical conductivity, and optical absorption, with maximum performance observed in the Na0.5K0.5Cl:Ce3+ crystal. The results suggest that these crystals could find application in luminescence, capacitor, and thermoluminescence dosimeter applications.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Inorganic & Nuclear
Igor Oshchapovsky, Ebube E. Oyeka, Thao T. Tran, Tomasz Klimczuk, Michal J. Winiarski
Summary: Single crystals of completely ordered variant of YNi3Al9 compound were grown and its crystal structure was determined. The growth of large single crystals suggests a possible existence of an equilibrium region on the phase diagram where the compound is in equilibrium with liquid. The investigation also showed a trend towards more ordered structures in flux grown samples and more disordered ones in arc melted samples.
JOURNAL OF SOLID STATE CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Deyong Zheng, Huihui Jin, Yucong Liao, Pengxia Ji
Summary: In this study, a highly stable and efficient catalyst, fluorine-doped Co3O4 (F-Co3O4), was developed for hydrogen production by water electrolysis. The F-Co3O4 catalyst exhibited a remarkable reduction in overpotential and demonstrated excellent stability for over 100 hours.
Article
Materials Science, Multidisciplinary
Ziwen Lv, Jintao Wang, Fengyi Wang, Jianqiang Wang, Fuquan Li, Hongtao Chen
Summary: Adding Cu6Sn5 nano particles can effectively inhibit the overgrowth of intermetallic compounds at the interfaces of solder joints in electronic devices, providing a solution to this issue. A new growth mechanism of intermetallic compounds at the interfaces was identified.
Article
Materials Science, Multidisciplinary
Jun Wang, Jiawei Chen, Wanru Liao, Fangyang Liu, Min Liu, Liangxing Jiang
Summary: A BiOI/AgI/Ag plasmonic heterostructure photocathode was successfully designed through electrodeposition, ion-exchange, and illumination methods. This photocathode exhibits superior performance in photoelectrochemical water splitting.
Article
Materials Science, Multidisciplinary
Xiaoxiao Liu, Xianxian Zhou, Xiaotao Ma, Qinbo Yuan, Shibin Liu
Summary: In this study, the authors propose a method to accelerate the reaction of polysulfides in lithium-sulfur batteries using a Ni@OC Mott-Schottky heterojunction as a catalyst. The experimental results demonstrate that the charge redistribution at the Ni@OC interface accelerates electron transfer and enhances catalytic activity, leading to improved reaction kinetics and battery performance.
Article
Materials Science, Multidisciplinary
Dayou Ma, Mohammad Rezasefat, Joziel Aparecido da Cruz, Sandro Campos Amico, Marco Giglio, Andrea Manes
Summary: The matrix has a significant effect on the impact resistance of composite materials. Replacing a brittle polymer with a more flexible one can improve impact resistance, but it poses challenges to standard testing methods. This study designs a new fixture for testing the low-velocity impact of soft composites and investigates the effect of the fixture on the mechanical performance.
Article
Materials Science, Multidisciplinary
Lingchang Wang, Qihang Yang, Huzhen Li, Ming Wei, Qian Wang, Zhenzhong Hu, Mengmeng Zhen
Summary: Bronze titanium dioxide (TiO2(B)) is a promising anode material for lithium-ion batteries due to its high specific capacity. However, its practical applications are hindered by poor conductivity and limited electrochemical kinetics. In this study, TiO2(B)-carbon nanosheets heterostructures are synthesized to enhance the cycling performance and rate capability of TiO2(B).
Article
Materials Science, Multidisciplinary
Atul Thakur, Ritesh Verma, Ankush Chauhan, Fayu Wan, Preeti Thakur
Summary: In this study, BaFe12O19 and BaFe12O19: Epoxy (50:50) nanocomposites were synthesized using the co-precipitation method. The structural information and material properties, such as crystallite size and electrical conductivity, were characterized by XRD, FESEM, EDX, and TEM techniques.
Article
Materials Science, Multidisciplinary
Jingyu Wu, Xinyan Ma, Yong Yang
Summary: A well-defined CoS2@NC(CS-500) hierarchical binder-free catalyst cathode is constructed through in-situ grown of ZIF-67 on carbon cloth and high-temperature carbonization. The cathode shows excellent reaction kinetics and electrochemical performance, providing inspiration for developing advanced Li-CO2 battery catalysts.
Article
Materials Science, Multidisciplinary
Svetlana M. Posokhova, Vladimir A. Morozov, Kirill N. Boldyrev, Dina Deyneko, Erzhena T. Pavlova, Bogdan I. Lazoryak
Summary: This study explores the impact of synthesis method and composition on the structure and luminescence properties of K5Eu1-xHox(MoO4)4 with the palmierite-type matrix. The co-doping of Eu3+ and Ho3+ ions plays a critical role in manipulating charge transfer and luminescence efficiency in the visible and infrared regions.
Article
Materials Science, Multidisciplinary
Jian Wang, Yeting Tao, Jingsheng Wang, Youtian Tao
Summary: A new electron-transport material iTPyBI-CN is developed through non-catalytic C-N coupling reaction. It exhibits better electroluminescence efficiency in organic light-emitting diodes compared to the commercial material TPBI, due to its twisted geometry and higher energy levels.
Article
Materials Science, Multidisciplinary
Tao Zhu, Feng Huang, Shuo Li, Yang Zhou
Summary: This article combines XRD analysis and microscopic structural observation to investigate the changes in limestone after high-temperature treatment. It finds that 500 degrees C is the critical temperature for crystalline and spatial arrangement changes in limestone, and the thermal conductivity, specific heat capacity, and heat storage coefficient gradually decrease after thermal treatment.
Article
Materials Science, Multidisciplinary
Muhammad Haekal Habibie, Fransiska Sri Herwahyu Krismastuti, Abdi Wira Septama, Faiza Maryani, Vivi Fauzia
Summary: This study focuses on the synthesis of zinc oxide nanostructure from zinc recovered from galvanization ash and highlights its potential as a sustainable source of zinc and as an antibacterial agent.
Article
Materials Science, Multidisciplinary
Jingyi Li, Yixin Xing, Wei Gu, Shousi Lu
Summary: In this study, PC@CaP microparticles were fabricated using biomimetic mineralization. The results showed that under environmental stress, PC@CaP exhibited improved stability and antioxidative activity, indicating its potential use in high-added value fields.
Article
Materials Science, Multidisciplinary
Yan Liu, Shunyou Chen
Summary: In this study, TNTs were used as a drug carrier and modified with ZIF-8 and silk fibroin to obtain a new drug loading platform. The results showed that this drug-loaded platform had a good drug release effect in vitro and could promote cell proliferation and osteogenic differentiation.
Article
Materials Science, Multidisciplinary
Chunhui Zhu, Wentao Wang, Qing Zhen, Xinning Huang, Shixin Li, Shaochang Wang, Xiaoping Ma, Xiaoxia Liu, Yalong Jiao, Kai Sun, Zhuangzhi Li, Huaixin Yang, Jianqi Li
Summary: A type of stacking fault is revealed in e-InSe crystal, which is associated with a small stacking-fault energy and shows exceptional plasticity.