Article
Chemistry, Multidisciplinary
Hui Fu, Nan Zhang, Feili Lai, Longsheng Zhang, Zhenzhong Wu, Hanjun Li, Haiyan Zhu, Tianxi Liu
Summary: A novel B-doped Ni-based catalyst with surface strain modulation is reported for high selective and productive two-electron ORR to produce H2O2. The catalyst exhibits excellent activity, stability, and Faraday efficiency, providing a new direction for the design of highly active and stable catalysts.
Article
Chemistry, Physical
Hyejeong Hyun, Daseul Ham, Su Yong Lee, Jongwoo Lim
Summary: High-Ni layered oxides undergo chemomechanical evolution during high-voltage charging, leading to crystallographic defects and lattice distortions within cathode particles. However, these lattice imperfections are difficult to characterize in discharged states due to the significant recovery during discharging. This study successfully detects subtle yet persistent lattice distortions in the discharged state using synchrotron-based X-ray diffraction and Bragg coherent diffraction imaging.
ADVANCED ENERGY MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Yu-Qiang Tao, Jun-Jun Feng, Yu-Long Chen
Summary: The Al element is mainly distributed in the NiFe2O4 phase, and the doping of Al is not conducive to the densification of cermet. The morphology of the metallic phase is related to the Al adding method.
MATERIALS RESEARCH EXPRESS
(2021)
Article
Physics, Multidisciplinary
V. Vijayanarayanan, Himalay Basumatary, M. Manivel Raja, V Aravindan, M. Mahendran
Summary: The structural, magnetic, and magnetostrictive properties of Fe-73-Ga27-x-Dy-x alloys were investigated. It was found that the inclusion of Dy enhances the magnetostrictive quality of Fe-Ga alloys, but a high concentration of Dy has a negative impact on the magnetostrictive behavior.
Article
Physics, Condensed Matter
Xiang Yu, Ningfang Zhou, Ruoshui Liu, Lichen Wang, Zhiyi Xu, Huayang Gong, Tongyun Zhao, Jirong Sun, Fengxia Hu, Baogen Shen
Summary: The structure and magnetic properties of Zn2+-Sn4+ co-substituted M-type strontium ferrite were studied using various techniques. The results showed that the sample with x = 0.25 had the maximum saturation magnetization of 77 emu/g, making it a promising candidate for high-density magnetic recording materials.
PHYSICA B-CONDENSED MATTER
(2023)
Article
Polymer Science
M. Sivaram Prasad, B. B. V. S. Vara Prasad, K. V. Ramesh, B. Rajesh Babu
Summary: Nanocrystalline chromium substituted Ni-Zn nanoferrites were synthesized and characterized for their electrical and magnetic properties through sintering. The results showed changes in structure and properties with chromium substitution, and FT-IR spectra analysis indicated the spinel structure characteristics.
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Hao Wu, Xiao-Lei Shi, Wei-Di Liu, Han Gao, De-Zhuang Wang, Liang-Cao Yin, Qingfeng Liu, Zhi-Gang Chen
Summary: This study presents an improved thermoelectric performance of Pr2CoFeO6 through a synergistic strategy of rational annealing and Ni doping. The annealing process reduces pores and enhances electrical conductivity, while Ni doping increases hole carrier concentration and improves electrical conductivity and power factor. Additionally, Ni doping introduces localized crystal defects, reducing thermal conductivity. The achieved Pr1.8Sr0.2CoFe0.95Ni0.05O6 exhibits a high ZT value at high temperatures, indicating its potential applications in high-performance thermoelectric devices.
APPLIED MATERIALS TODAY
(2022)
Article
Chemistry, Inorganic & Nuclear
Ashwani Kumar, Mohd Shkir, K. L. Singh, S. K. Tripathi
Summary: In this study, CH3NH3PbI3 and CH3NH3Pb0.97Hg.I-03(3) perovskite thin films were fabricated using a single-step spin coating method, and the influence of Hg doping on optical and structural properties was systematically investigated. The doped perovskite showed a bandgap similar to 1.56 eV, making it ideal for photovoltaic applications. The results suggest that transition metals like Hg can enhance the absorption energy and structural properties of lead-free perovskite materials for innovative photovoltaic applications.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Energy & Fuels
Shuangshuang Liang, Congcong Liu, Haibin Sun, Canglong Li, Minghai Feng, Shasha Gao, Shenghong Liu, Haiyang Pan, Guixian Ge
Summary: The development of advanced electrode materials through structure engineering is of great interest for high-power and high-energy-density storage devices. In this study, a series of hierarchical Ni3SnxS2-x nanomaterials are synthesized using a feasible hydrothermal method, showing an interesting structural evolution from Ni3S2 to Ni3Sn2 through Sn doping. The optimized Ni3SnxS2-x exhibits high capacitance and excellent rate performance, attributed to the synergetic effect of numerous electrochemical active sites introduced by Sn doping and improved conductivity due to the hierarchical structure. Furthermore, the as-prepared Ni3SnxS2-x also demonstrates higher coercivity and lower saturation magnetization. This work showcases an effective approach to prepare functional electrode materials for energy storage devices.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Physical
Zhiming Dai, Kai Li, Zhenhua Wang, Wei Liu, Zhidong Zhang
Summary: Heavy rare-earth elements play an important role in the preparation of permanent magnets. This study investigates the phase composition and magnetization reversal mechanism of the Nd-Dy-Fe-B multicomponent system. It is found that substituting Nd with Dy suppresses certain phases and favors the formation of Nd2Fe14B phase. The study also reveals the influence of magnetic properties of grain boundaries on magnetization reversal.
Article
Chemistry, Multidisciplinary
Pavel E. Kazin, Mikhail A. Zykin, Andrey K. Dyakonov, Alexander V. Vasiliev, Maxim A. Karpov, Evgeny A. Gorbachev, Anastasia E. Sleptsova, Martin Jansen
Summary: Researchers have discovered the first instance of a rare-earth single-ion magnet in a robust extended solid, with a crystal structure different from apatite. The compound exhibits slow relaxation of magnetization in a zero field, simultaneously revealing two energy barriers for magnetization reversal.
CHEMICAL COMMUNICATIONS
(2022)
Article
Materials Science, Ceramics
Xiaozhen Fan, Zhuo Wang, Zheng Fang, Huiqun Ye, Jinju Zheng, Jianqiang Zhang, Yanjun Qin, Yao Zhai, Yanlong Miao, Zixiang Zhao, Can Yang, Jiajun He, Zhenghang Wei, Yunzhang Fang
Summary: The microscopic strain evolution and microstructural of FeCuNbSiB amorphous alloy samples were studied under both free and tensile stress annealing conditions. It was found that an amorphous-nanocrystalline structure was developed in both samples after annealing at 813 K, and the size of nanocrystals was limited by the applied stress.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Chemistry, Physical
Anushree Dutta, Dyutiman Barman, Jayanta Das
Summary: Hardening was observed in Ni-Zr-Al ultrafine lamellar eutectic composite via nano-precipitation, with significant enhancement of strength upon annealing and stable lamellar morphology up to high temperatures. Addition of Al facilitates the formation of small precipitates in the matrix, leading to improved material performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
A. V. Malyshev, A. P. Surzhikov, O. Stary
Summary: The paper proposes a method for analyzing the chemical homogeneity of ferrite ceramics by studying the temperature dependence of initial permeability. The method was found to be more sensitive compared to XRD and hysteresis loops, and can be used to evaluate the electromagnetic properties of ferrite materials.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Thomas Dippong, Erika Andrea Levei, Ioan Petean, Iosif Grigore Deac, Oana Cadar
Summary: This work synthesized MnFe2O4/SiO2 ceramic nanocomposites via sol-gel method and investigated the effect of metal ion doping and annealing temperature on their structure, morphology, and magnetic properties. It was found that the doping ion and annealing temperature had significant influence on the structural and magnetic parameters of the nanocomposites.
Article
Chemistry, Multidisciplinary
Zihua Zhu, Yufan Zhou, Pengfei Yan, Rama Sesha Vemuri, Wu Xu, Rui Zhao, Xuelin Wang, Suntharampillai Thevuthasan, Donald R. Baer, Chong-Min Wang
Article
Materials Science, Multidisciplinary
Hsu-Cheng Huang, Lihua Zhang, Girish Malladi, Jerry I. Dadap, Sandeep Manandhar, Kim Kisslinger, Rama Sesha R. Vemuri, Vaithiyalingam Shutthanandan, Hassaram Bakhru, Richard M. Osgood
OPTICAL MATERIALS EXPRESS
(2015)
Article
Chemistry, Multidisciplinary
Sebastian Prodinger, Rama S. Vemuri, Tamas Varga, B. Peter McGrail, Radha Kishan Motkuri, Miroslaw A. Derewinski
NEW JOURNAL OF CHEMISTRY
(2016)
Article
Chemistry, Physical
Wentao Duan, Rama S. Vemuri, Jarrod D. Milshtein, Sydney Laramie, Rylan D. Dmello, Jinhua Huang, Lu Zhang, Dehong Hu, M. Vijayakumar, Wei Wang, Jun Liu, Robert M. Darling, Levi Thompson, Kyle Smith, Jeffery S. Moore, Fikile R. Brushett, Xiaoliang Wei
JOURNAL OF MATERIALS CHEMISTRY A
(2016)
Article
Physics, Condensed Matter
Giridhar Nandipati, Xiujuan Jiang, Rama S. Vemuri, Suveen Mathaudhu, Aashish Rohatgi
JOURNAL OF PHYSICS-CONDENSED MATTER
(2018)
Article
Chemistry, Multidisciplinary
Jian Zheng, Rama S. Vemuri, Luis Estevez, Philip K. Koech, Tamas Vargas, Donald M. Camaioni, Thomas A. Blake, B. Peter McGrail, Radha Kishan Motkuri
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2017)
Article
Materials Science, Multidisciplinary
Karen Kruska, Aashish Rohatgi, Rama S. Vemuri, Libor Kovarik, Trevor H. Moser, James E. Evans, Nigel D. Browning
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2017)
Article
Chemistry, Multidisciplinary
Radha Kishan Motkuri, Rama S. Vemuri, Dushyant Barpaga, Herbert Schaef, John S. Loring, Paul F. Martin, David B. Lao, Satish K. Nune, B. Peter McGrail
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2018)
Article
Multidisciplinary Sciences
Wentao Duan, Rama S. Vemuri, Dehong Hu, Zheng Yang, Xiaoliang Wei
JOVE-JOURNAL OF VISUALIZED EXPERIMENTS
(2017)
Article
Nanoscience & Nanotechnology
R. S. Vemuri, M. H. Engelhard, C. V. Ramana
ACS APPLIED MATERIALS & INTERFACES
(2012)
Article
Materials Science, Multidisciplinary
A. Devaraj, W. Wang, R. Vemuri, L. Kovarik, X. Jiang, M. Bowden, J. R. Trelewicz, S. Mathaudhu, A. Rohatgi
Article
Materials Science, Multidisciplinary
Wahyu Setyawan, Matthew Gerboth, Bo Yao, Charles H. Henager, Arun Devaraj, Venkata R. S. R. Vemuri, Suntharampillai Thevuthasan, Vaithiyalingam Shutthanandan
JOURNAL OF NUCLEAR MATERIALS
(2014)
Article
Multidisciplinary Sciences
Atanu Kumar Das, Rama Sesha Vemuri, Igor Kutnyakov, B. Peter McGrail, Radha Kishan Motkuri
SCIENTIFIC REPORTS
(2016)
Article
Chemistry, Inorganic & Nuclear
Satish K. Nune, David B. Lao, Mark E. Bowden, Herbert T. Schaef, Rama S. Vemuri, Radha Kishan Motkuri, B. Peter McGrail
INORGANICA CHIMICA ACTA
(2019)