Article
Materials Science, Multidisciplinary
Anitha Anand, M. Manjuladevi, R. K. Veena, V. S. Veena, Yuri S. Koshkid'ko, S. Sagar
Summary: The study investigates the effect of Ti doping on structural, magnetic, and magnetocaloric properties of Nd-based manganites, finding that N-0.15 exhibits increased Working Temperature Span and decreased magnetic hysteresis loss, making it a potential candidate for low-temperature magnetic refrigeration.
MATERIALS RESEARCH BULLETIN
(2022)
Article
Chemistry, Inorganic & Nuclear
Zungang Zhu, Shengcai Wu, Yongfu Long, Lu Zhang, Xin Xue, Yue Yin, Benjun Xu
Summary: The study found that silicon doping can inhibit the transformation of anatase to ruffle titanium dioxide, leading to an increase in phase transition temperature and activation energy. Experimental results suggest that the crystal growth process is controlled by the growth of the interface.
JOURNAL OF SOLID STATE CHEMISTRY
(2021)
Article
Chemistry, Physical
Olga S. Volkova, Peter S. Berdonosov, Irina K. Shamova, Badiur Rahaman, Asif Iqbal, Tanusri Saha-Dasgupta, Alexander N. Vasiliev
Summary: Monoclinic Cu4O(SeO3)3 was prepared using hydrothermal method and subsequent heating in evacuated silica tubes. The compound exhibits magnetic ordering at T1 = 13.2 K and a pre-transitional anomaly at T2 = 17.2 K. The application of external magnetic field suppresses excessive magnetization of the intermediate phase, but a hump in specific heat is observed. First principles calculations provide values of both ferro-magnetic and antiferromagnetic exchange interactions within O2Cu6 units, as well as anti-ferromagnetic intralayer and interlayer exchange interactions. A magnetic model for monoclinic Cu4O(SeO3)3 is proposed based on the signs and values of these interactions.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Ryota Yabune, Shunya Shimizu, Masaharu Fujioka, Hideaki Sasaki
Summary: The effects of Ag on the phase transformation of Cu3Sb were investigated. It was found that Ag dissolved in the Cu3Sb phase, enhancing its stability. A new alloy phase with a hexagonal structure was also observed. The isothermal section of the Cu-Sb-Ag ternary phase diagram at 500 degrees C was successfully constructed based on observations of alloys with various compositions.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2022)
Article
Physics, Applied
A. O. Dashdemirov, Y. I. Aliyev, R. J. Bashirov, N. A. Aliyeva, L. V. Rustamova
Summary: The compound Cu2Se was synthesized and its crystal structure was studied using the angle dispersive XRD method. A phase transition from orthorhombic to cubic was observed at a temperature of 407K, resulting in the formation of a highly symmetrical phase. The crystallographic parameters for each phase were determined.
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
(2023)
Article
Chemistry, Multidisciplinary
Dmitry V. Karpinsky, Maxim V. Silibin, Siarhei I. Latushka, Dmitry V. Zhaludkevich, Vadim V. Sikolenko, Hanan Al-Ghamdi, Aljawhara H. Almuqrin, M. I. Sayyed, Alexei A. Belik
Summary: The crystal structure and magnetic state of the (1 - x)BiFeO3-(x)BiMnO3 solid solution were analyzed. It was found that increasing the dopant concentration led to structural and magnetic transitions at room temperature, resulting in a two-phase structure. Irreversible temperature-driven structural transitions favored the stabilization of high-temperature structural phases.
Article
Chemistry, Multidisciplinary
Shi-Jie Song, Jia-Yi Lu, Qin-Qing Zhu, Zhi Ren, Guang-Han Cao
Summary: Na2Fe2S2O exhibits an anti-K2NiF4-type structure with [Fe2S2O]2- block layers. It shows antiferromagnetic insulating behavior with a Neel temperature of 91.5 K. The Fe-S bond distance is found to be the main factor determining the Neel temperature, and short-range spin correlations are observed above the Neel temperature.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2023)
Article
Multidisciplinary Sciences
Dominique Laniel, Florian Trybel, Bjoern Winkler, Florian Knoop, Timofey Fedotenko, Saiana Khandarkhaeva, Alena Aslandukova, Thomas Meier, Stella Chariton, Konstantin Glazyrin, Victor Milman, Vitali Prakapenka, Igor A. Abrikosov, Leonid Dubrovinsky, Natalia Dubrovinskaia
Summary: This study presents the chemical and structural diversity of lanthanum hydrides synthesized under high pressure, providing clues for the search of other hydrides and high-temperature superconductors. However, assessing potentially superconducting phases and the nature of electronic transitions remains a challenge.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Physical
A. S. Rogachev, D. Yu Kovalev, N. A. Kochetov, A. S. Shchukin, S. G. Vadchenko
Summary: Mechanical alloying and annealing were used to produce a powder of uniform high entropy alloy AlCoCrFeNi, leading to crystal lattice transformations and structural changes, with certain phases undergoing transition at specific temperatures, enhancing the alloy's properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Daria Lazurenko, Victor V. Lozanov, Andreas Stark, Florian Pyczak, Alexey A. Ruktuev, Kemal Emurlaev, Lin Song, Ivan A. Bataev, Ivan Ivanov, Tatiana S. Ogneva, Anatoly A. Bataev
Summary: Ti-Al3Ti composites have attracted attention for their outstanding mechanical properties, but limited by the low ductility and fracture toughness of Al3Ti phase. This study discusses stabilizing the L1(2) structure of titanium trialuminide as a promising way to improve composite properties, with Zn and Ag found to be the most efficient stabilizers.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Manish Badole, Hari Narayanan Vasavan, Samriddhi Saxena, Asish Kumar Das, Velaga Srihari, Sunil Kumar
Summary: The effects of La3+ and Al3+ substitution on the structural, dielectric, and piezo-electric properties of (1-x)(K0.5Bi0.5)TiO3-xLaAlO3 ceramics were investigated. With the increase in LAO content, a decrement in tetragonal distortion and an increase in cubic symmetry were observed. The incorporation of LAO in KBT resulted in an improved relaxor behavior and a suppression of oxygen vacancies. The piezo-electric properties were enhanced, with the 3% LAO-doped sample exhibiting the highest piezo-electric charge coefficient and improved piezo-electric voltage coefficient. An energy harvesting experiment was performed on the poled 3% LAO-doped ceramic, showing promising results under normal finger tapping.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Simon R. Larsen, Daniel Hedlund, Henry Stopfel, Dennis Karlsson, Christian K. Christensen, Peter Svedlindh, Johan Cedervall
Summary: The alloys of AlCoCrFeMnxNi were synthesized through arc-melting and gas atomisation to study the effect of Mn additions. It was found that an increase in Mn content adversely affected the thermal stability and saturation magnetisation of the alloy compared to AlCoCrFeNi.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Inorganic & Nuclear
Valentina Yukhno, Sergey Volkov, Rimma Bubnova, Alexey Povolotskiy, Valery Ugolkov
Summary: A study on Ca2B2O5 revealed a reversible sequence of phase transitions at high temperatures, with the high-temperature modification α-Ca2B2O5 showing isostructural properties to α-Sr2B2O5 and displaying orientational disorder of isolated B2O5 pymborate groups. The thermal expansion of the material is strongly anisotropic, influenced by the preferential orientations of BO3 triangles in the structure.
SOLID STATE SCIENCES
(2021)
Article
Chemistry, Physical
Patric Berger, Clemens Schmetterer, Herta Effenberger, Hans Flandorfer
Summary: This study presents the first reported isothermal sections of the Sb-Sn-Ti system at different temperatures, identifying two new ternary phases and determining their crystal structures using X-ray diffraction.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Zhongnan Guo, Zhao Liu, Jun Deng, Jiawei Lin, Zijing Zhang, Xue Han, Fan Sun, Wenxia Yuan
Summary: This study presents the synthesis of two new quaternary chalcogenides KMgCuSe2 and KMgCuTe2 with ThCr2Si2-type structure, featuring randomly distributed Mg and Cu in single-crystal refinement, and exhibiting semiconducting properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
A. Aly, M. Ghali, A. Osman, M. K. El Nimr
Summary: This study reports the discovery of naturally occurring luminescent graphene quantum dots (GQDs) in coconut water for the first time. The GQDs were identified through various measurements and were found to have dual sizes and emit different wavelengths of light. The GQDs were also utilized as an efficient optical sensor for aniline liquid detection.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Zehua Chen, Wencheng Ma, Qinglu Fan, Yanhua Liu, Min Sun, Shuo Wang
Summary: The nanoscale e-VOPO4 materials were successfully prepared by hydrothermal synthesis and calcination, showing high purity and suitable particle size. It exhibited satisfactory electrochemical performance as cathode material for sodium ion batteries, making it a potential candidate for high energy storage systems.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Tao Liu, Yahui Liu, Le Ling, Zhongxi Sheng, Zao Yi, Zigang Zhou, Yongjia Yang, Bin Tang, Qingdong Zeng, Tangyou Sun
Summary: In this paper, a terahertz (THz) micronano device that can switch between bimodal absorption and plasmon-induced transparency (PIT) is proposed. The device consists of layers of graphene, silica, and vanadium dioxide, and has a simple structure, easy tuning, and wide-angle absorption. The device achieves perfect absorption at specific frequencies and is highly sensitive to environmental refractive index. It also has the functions of a three-frequency asynchronous optical switch and slow light effect.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Xiaobo Luo, Songhan Hu, Qiudong Duan, Dacheng Zhou, Jialin Chen, Yugeng Wen, Jianbei Qiu
Summary: The exploration of solar light absorption by a material is important in photonics and optoelectronics. This study reveals the potential of Ba3-xGa2O6:xBi3+ as a promising candidate for various photonic and optoelectronic applications, and demonstrates the use of the material in double-sided laser printing for three-dimensional optical imaging.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Hemin Wang, Yanling Hao, Lele Xiang, Xiaosi Qi, Lei Wang, Junfei Ding, Yunpeng Qu, Jing Xu, Wei Zhong
Summary: This study designed Fe3O4-FeCO3/MWCNTs/RGO MCNCs composites and fabricated large-scale samples using hydrothermal and freeze-drying methods. The microstructural investigation showed that these materials had a mixed-dimensional structure, which improved impedance matching features, polarization, and conduction loss abilities, leading to significantly enhanced electromagnetic absorption properties.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Zhenshan Yu, Hao Chen, Xuequan Chen, Yu-Sheng Lin
Summary: This study presents a silicon dielectric metamaterial (SDM) composed of two outer symmetric semi-circular rings and two inner symmetric split-ring resonators (SRRs). The electromagnetic responses of the SDM device in different modes were studied through numerical simulations and experiments. Increasing the structure height of the SDM device resulted in red-shifted resonances and stronger intensities. This study provides a new design strategy for the development of frequency filtering, polarization switching, and resonance modulation characteristics in THz-wave applications.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Yiming Qi, Na Zhang, Meng Zong, Yangxianzi Liu, Weixing Chen
Summary: This study prepares dielectric/carbon fiber based nanocomposites wave-absorbing materials using liquid diffusion and high temperature carbonization strategies. By tuning the element type, drying mode, and filling amount, the electromagnetic parameters and absorbing properties can be adjusted. The best synthesized sample shows excellent absorbing performance, making it suitable for a wide range of electromagnetic wave absorption applications.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Carlos D. Gonzales-Lorenzo, T. K. Gundu Rao, Alberto A. Ccollque-Quispe, Jorge Ayala-Arenas, Monise B. Gomes, Betzabel N. Silva-Carrera, Roseli F. Gennari, Valeria S. Pachas, F. Monzon-Macedo, H. Loro, Jose F. D. Chubaci, Nilo F. Cano, Rene R. Rocca, Shigueo Watanabe
Summary: In this study, CaSiO3 doped with different ppm of Eu was synthesized using the devitrification method. Various physical properties were analyzed, revealing that the intensity and temperature of the high-temperature TL peak increased with higher dopant amounts. Fluorescence measurements indicated the presence of Eu2+ and Eu3+ ions in the samples. EPR spectra confirmed the existence of two defect centers.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Yanning Qu, Xinyang Li, Mei Cui, Renliang Huang, Wanquan Ma, Yunting Wang, Rongxin Su, Wei Qi
Summary: In this study, a new molybdenum disulfide/N,S-doped carbon quantum dots (MoS2/N,S-CQDs) heterojunction with enhanced light absorption and electrons transfer di-functional properties was constructed via a facile one-pot hydrothermal method. The heterojunction showed remarkable efficiencies in degrading methylene blue (MB) and malachite green (MG) in an actual water system under simulated sunlight irradiation. The facile synthetic technique and effective multifunctional properties of the composite have the potential for further research and industrial applications.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Jiayi Wang, Penggang Ren, Xueyan Zhao, Zhengyan Chen, Yanling Jin, Zengping Zhang
Summary: In this study, a novel homojunction photocatalyst was developed by combining defective g-C3N4 and flaked g-C3N4, which showed excellent degradation performance and cycling stability, and exhibited practicality in several simulation experiments.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Jing Yan, Xiaoxiao Zhao, Weixing Chen, Panbo Liu
Summary: This research presents a self-templated strategy to prepare a spherical superstructure of carbon nanorods through material modification and pyrolysis. The resulting material exhibits a large controllable radius of curvature and shows excellent microwave absorbing properties due to its high specific surface area and mesoporous structure.
MATERIALS RESEARCH BULLETIN
(2024)
Review
Materials Science, Multidisciplinary
Qinglin Zeng, Zepeng Lv, Shaolong Li, Bin Yang, Jilin He, Jianxun Song
Summary: Liquid metal batteries possess stable safety performance, high rate performance, and thermal stability. The electrolyte, an important component of the battery, plays a significant role in achieving these remarkable performance characteristics. This paper reviews the important research progress of liquid metal batteries electrolyte and discusses the influence of different electrolyte types on energy efficiency. It also highlights the limitations and challenges of existing electrolytes and proposes key development directions for liquid metal electrolytes.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Song Wu, Junli Wang, Xuanbing Wang, Di Jiang, Jinlong Wei, Xiaoning Tong, Zhenwei Liu, Qingxiang Kong, Naixuan Zong, Ruidong Xu, Linjing Yang
Summary: In this study, a composite electrode composed of Ti/TiH2/beta-PbO2_Mn3O4@C was fabricated and investigated for zinc electrowinning. The composite electrode exhibited low overpotential, Tafel slope, icorr, and high voltage stability, outperforming most reported Ti-based PbO2 electrode materials. The excellent catalytic activity can be attributed to the low resistance and porous interlayer of TiH2 nanosheets, as well as the addition of Mn3O4@C micro-flakes to the active layer.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
E. Tsoutsoumanos, T. Karakasidis, N. Laskaris, P. G. Konstantinidis, G. S. Polymeris, G. Kitis
Summary: This study investigates the correlation between nanocrystal dimensions and thermoluminescence signal magnitude through simulations conducted in Python. Two mathematical models, OTOR and IMTS, were used to derive theoretical luminescence signals. The obtained results were compared with experimental data and a thorough comparative discussion was conducted.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Vishnu Aggarwal, Sudhanshu Gautam, Aditya Yadav, Rahul Kumar, Bipul Kumar Pradhan, Brajesh S. Yadav, Govind Gupta, Senthil Kumar Muthusamy, Sumeet Walia, Sunil Singh Kushvaha
Summary: Recently, there has been a great demand for highly responsive photodetectors that can detect a wide range of wavelengths. Researchers have successfully fabricated a broadband metal-semiconductor-metal photodetector by integrating sputtered Bi2Se3 with laser molecular beam epitaxy grown GaN film. This photodetector shows high responsivity in both the ultraviolet and near-infrared regions.
MATERIALS RESEARCH BULLETIN
(2024)