Article
Physics, Applied
Zhenhua Zhang, Ming Cheng, Zhaorui Zou, Jing Xu, Yong Liu, Zhihong Lu, Rui Xiong
Summary: The electronic transport and magnetic properties of TixCr1-xO2 epitaxial films with low Ti concentrations were studied. Ti-doped films showed a significant increase in resistivity compared to pure CrO2 films, and the magnetoresistance at low temperature was more difficult to saturate even under an external field of 5 Tesla. The study also found cluster glass freezing behavior occurring at low temperature in Ti-doped films, with specific parameters obtained through analysis using dynamic scaling theory.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Energy & Fuels
Milan Singh, Brahma Prakash Dubey, Asit Sahoo, K. L. Yadav, Yogesh Sharma
Summary: The study investigated the structural, magnetic, and electrical properties of FeMnxCo2-xO4 nanofibers synthesized successfully using the electrospinning technique. It was found that under a magnetic environment, the conductivity of the x = 0.4 sample increased by almost two times, and the capacitance value also significantly increased.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Materials Science, Multidisciplinary
Yan Lu, Haonan Wang, Li Wang, Li Yang
Summary: By analyzing the spin superexchange paths and the projected density of states, 2D magnetic semiconductors can be classified into three types, with specific carrier-driven magnetic phase transitions quantitatively determined by the superexchange coupling strength calculation. The model also allows for the design of heterostructures to achieve magnetic phase transitions.
Article
Chemistry, Physical
A. V. Pashkevich, A. K. Fedotov, E. N. Poddenezhny, L. A. Bliznyuk, J. A. Fedotova, N. A. Basov, A. A. Kharchanka, P. Zukowski, T. N. Koltunowicz, O. V. Korolik, V. V. Fedotova
Summary: This study investigated the relationship between the structure and electric properties of composite ceramics and found that the type of doping agents and synthesis process can affect the phase composition and performance of the materials. In terms of electron transport, the contribution of the C-band depends on the low and deep donor centers. Doping with iron enhanced the performance of ZnO-based ceramic samples, while doping with cobalt resulted in a weaker effect.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
E. Hastuti, A. Subhan, P. Amonpattaratkit, M. Zainuri, S. Suasmoro
Summary: Mn1-xFexO2 was synthesized by a hydrothermal method and its properties were analyzed. Doping Fe into MnO2 significantly affected its crystal structure and electrical properties, including phase transformation and changes in conductivity.
Article
Materials Science, Multidisciplinary
M. Mihalik Jr, A. Pacanowska, M. Orendac, K. Csach, M. Fitta, M. Mihalik
Summary: The impact of preparation atmosphere (air, Ar, or O-2) on the magnetic properties of the multiferroic compound GdMnO3+delta is investigated. It is found that the preparation atmosphere has a minor effect on T-N, but significantly affects the T-lock transition and T-Gd. The mechanism behind these effects is the oxygen off-stoichiometry of the prepared samples. The hysteresis loops exhibit a butterfly-type -> ferromagnetic/ferrimagnetic -> butterfly-type -> antiferromagnetic sequence, indicating a rich magnetic phase diagram for this compound.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2023)
Article
Physics, Multidisciplinary
Serhii Sorokin, Md Shadab Anwar, Gregor Hlawacek, Richard Boucher, Joao Salgado-Cabaco, Kay Potzger, Juergen Lindner, Juergen Fassbender, Rantej Bali
Summary: The transport behavior of a mesoscopic Fe60Al40 wire during a phase transition has been investigated. The relationship between normal resistivity and Hall resistivity shows two distinct transport regimes during the phase transition.
NEW JOURNAL OF PHYSICS
(2023)
Article
Engineering, Electrical & Electronic
R. Selmi, W. Cherif, A. R. Sarabando, N. M. Ferreira, L. Ktari
Summary: Polycrystalline compounds were synthesized using the ceramic method and shown to have magnetic field tunability. The samples undergo a paramagnetic-ferromagnetic phase transition within a certain temperature range, and the transition temperature increases with the increase of La doping concentration.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Materials Science, Multidisciplinary
Anasua Khan, Swastika Chatterjee, T. K. Nath, A. Taraphder
Summary: Research on electron- and hole-doped LCMO using first-principles DFT calculations showed that defects can enhance antisite disorder and impact the magneto-dielectric properties of the system.
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
Physics, Multidisciplinary
Terumasa Tadano, Wissam A. Saidi
Summary: Understanding and predicting lattice dynamics in strongly anharmonic crystals is a longstanding challenge in condensed matter physics. In this study, a first-principles method is proposed to accurately predict the phonon spectrum with strong anharmonic broadening. The proposed method incorporates frequency renormalization effects by the bubble self-energy within the quasiparticle approximation. The results show that this method can accurately predict the phase transition temperature and phonon linewidth in anharmonic crystals.
PHYSICAL REVIEW LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Hui-Dong Qian, Jung Tae Lim, Jong-Woo Kim, Yang Yang, Tian Hong Zhou, Su Yeon An, Han Kook Jeon, Kyung Mox Cho, Jihoon Park, Chul-Jin Choi
Summary: Si doping has a significant effect on the crystallization and magnetic properties of Sm(Fe0.8Co0.2)(11)Ti, leading to an increase in coercivity and a decrease in magnetization. The presence of Si resulted in the formation of submicron-sized grains with high crystallinity in the ribbons, while the bulks showed varying crystallized phases with different Si concentrations.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Xubin Li, Jianjun Huang, Yaqiang Dong, Xincai Liu, Ronglin Zhao, Shouding Wu, Hang Wu, Wei Gao, Aina He, Jiawei Li
Summary: This work systematically investigates the effect of Ge content on the soft magnetic properties and microstructure of FeSiGe soft magnetic powder cores (SMPCs). The results show that the addition of Ge increases the electrical resistivity of Fe93.5-xSi6.5Gex SMPCs and influences the coercivity. Optimal magnetic properties are achieved with 2 wt% Ge content, including stable effective permeability of 78.4 up to 1 MHz, low core loss of 589.5 mW/cm3 at a maximum magnetic induction of 0.1 T and frequency of 50 kHz. Doping with Ge reduces micro-vortex dots and facilitates domain wall movement, leading to improved magnetic properties.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Physics, Applied
Hui Huang, Pengfei Qiu, Zhiqiang Gao, Jie Xiao, Xun Shi, Lidong Chen
Summary: This study investigates how magnetism influences the electrical transport properties in defective three-quarter Heusler compounds by doping Cu in ZrCo1.5Sn. The results show significantly lowered ferromagnetic transition temperature and decreased saturated magnetic moment due to the diluted Co atoms, as well as a change in dominant carrier scattering mechanism from spin fluctuation scattering to magnetic impurity scattering. Doped Cu atoms introduce non-bonding states below the valence band maximum, leading to the appearance of a narrow bandgap and semiconducting behavior in the electric transport properties.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Physics, Applied
D. A. Salamatin, S. E. Kichanov, I. E. Kostyleva, L. F. Kulikova, A. V. Bokov, I. P. Zibrov, D. P. Kozlenko, A. V. Tsvyashchenko
Summary: The substitution of Bi by rare-earth ions is an effective approach for enhancing the properties of BiFeO3. In this study, Bi1-xTbxFeO3 compounds were synthesized using a two-step process. High-pressure annealing was found to increase the solubility limit of Tb to 10 at. %. The transition from the R3c phase to the Pnma phase occurred through a two-phase region under certain pressures. The results provide insights for optimizing the synthesis of multiferroic materials with improved magnetoelectric coupling.
APPLIED PHYSICS LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Kunzhen Li, Bangchuan Zhao, Jin Bai, Hongyang Ma, Zhitang Fang, Xuebin Zhu, Yuping Sun
Article
Nanoscience & Nanotechnology
Peiyao Wang, Bangchuan Zhao, Jin Bai, Kunzhen Li, Hongyang Ma, Wanyun Li, Xuebin Zhu, Yuping Sun
SCRIPTA MATERIALIA
(2020)
Article
Chemistry, Multidisciplinary
Wanyun Li, Bangchuan Zhao, Jin Bai, Hongyang Ma, Kunzhen Li, Peiyao Wang, Yunjie Mao, Xuebin Zhu, Yuping Sun
Summary: Lithium-rich manganese-based materials are highly promising cathode materials for next-generation lithium-ion batteries due to their high specific capacity and low cost. However, their poor rate performance presents a challenge for commercialization, which can be improved through collaborative Co-doping and NaxCoO2-coating methods to enhance surface and internal dynamics without compromising cycle stability.
Article
Chemistry, Multidisciplinary
Kunzhen Li, Bangchuan Zhao, Hui Zhang, Hongyan Lv, Jin Bai, Hongyang Ma, Peiyao Wang, Wanyun Li, Jianguo Si, Xuebin Zhu, Yuping Sun
Summary: The study successfully optimized the electrochemical performance of nanocomposite TMNs electrodes on a carbon cloth substrate, demonstrating the potential for flexible supercapacitors.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Physical
Zhitang Fang, Wanyun Li, Bangchuan Zhao, Jin Bai, Kunzhen Li, Hongyang Ma, Xuebin Zhu, Yuping Sun
Summary: A series of Li-rich Mn-based layered materials with different particle sizes and distributions were successfully synthesized, showing enhanced electrochemical performance due to the unique particle size and PSD, especially at high current rates. The material displayed excellent lithium storage properties at high temperatures and full cells using this material as the cathode showed improved electrochemical performance.
ACS APPLIED ENERGY MATERIALS
(2021)
Review
Chemistry, Multidisciplinary
Peiyao Wang, Bangchuan Zhao, Jin Bai, Peng Tong, Xuebin Zhu, Yuping Sun
Summary: This paper summarizes the design approaches, synthesis routines, and latest advances in the development of transition metal nitrides (TMNs) as anode materials for lithium-ion batteries (LIBs) and sodium-ion batteries (SIBs). It also discusses the challenges and perspectives of TMNs-related materials in the future.
ADVANCED MATERIALS INTERFACES
(2022)
Article
Chemistry, Physical
Tongxiang Tao, Shuai Xu, Jin Bai, Sajid ur Rehman, Peiyao Wang, Xianglong Zhao, Ruiguo Chen, Huangtao Xu, Hong Bi, Bangchuan Zhao, Kun Ma, Junfeng Wang
Summary: Protein templates have great potential in preparing LIB anode, but the biodiversity of proteins is not fully utilized. In this study, biomineralized protein BSA was selected as the template and successfully regulated the structure, obtaining high-quality electrode materials.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Peiyao Wang, Jin Bai, Bangchuan Zhao, Hongyang Ma, Wanyun Li, Xuebin Zhu, Yuping Sun
Summary: A tremella-like Ni0.2Mo0.8N/Ni3N heterostructure with an amorphous Ni0.2Mo0.8N wrapped layer has been fabricated, exhibiting improved cycling stability and electrochemical performance. The application of an amorphous layer, the support of Ni3N particles, and the characteristics of the heterostructure contribute to the higher reversible discharge capacity and cycle stability.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Hongyang Ma, Jin Bai, Peiyao Wang, Wanyun Li, Yunjie Mao, Ke Xiao, Xuebin Zhu, Bangchuan Zhao, Yuping Sun
Summary: By using a double-carbon-layer coating strategy, the electronic conductivity and structural stability of NMVP material are enhanced, improving its sodium storage capacity and cycle stability. The modified NMVP electrode exhibits high capacity and good capacity retention at high rates, demonstrating excellent performance in sodium-ion batteries.
ADVANCED MATERIALS INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Hongyang Ma, Bangchuan Zhao, Jin Bai, Peiyao Wang, Wanyun Li, Yunjie Mao, Xiaoguang Zhu, Zhigao Sheng, Xuebin Zhu, Yuping Sun
Summary: As a promising cathode material for sodium-ion batteries, Na3V2(PO4)(3) (NVP) has attracted extensive attention due to its high stability and fast Na+ ion diffusion. However, the reversible capacity based on the two-electron reaction mechanism is unsatisfactory due to the inactive M1 lattice sites during the insertion/extraction process. In this study, self-supporting 3D porous NVP materials with different crystallinity were fabricated on carbon foam substrates using a facile electrostatic spray deposition method. By tuning the crystallinity, the V5+/V4+ redox couple was effectively activated and three-electron reactions for sodium storage were achieved in NVP. An ultra-high specific capacity of 179.6 mAh g(-1) at 0.2 C was achieved in a disordered NVP sample due to the coexistence of redox reactions from V4+/V3+ and V5+/V4+ couples. Additionally, a pseudocapacitive charge storage mechanism induced by the disordered structure was observed in the NVP electrode. An innovative model was proposed to understand this disorder-induced pseudocapacitance phenomenon in the polyanion cathode material.
Article
Chemistry, Multidisciplinary
Yunjie Mao, Bangchuan Zhao, Jin Bai, Hongyang Ma, Peiyao Wang, Wanyun Li, Ke Xiao, Siya Wang, Xuebin Zhu, Yuping Sun
Summary: As a new generation of energy storage systems, flexible batteries can expand the application scope and area of energy storage devices. Flexibility and energy density are the two key evaluation parameters for flexible batteries. In this study, a flexible VS2@CF material was fabricated by growing VS2 nanosheets on carbon foam, and it showed excellent rate capability and cycling performance when used as a cathode material for aqueous zinc-ion batteries. Moreover, the assembled quasi-solid-state battery also exhibited excellent rate capability and cycle performance, and had good flexible and self-healing properties.
Article
Chemistry, Multidisciplinary
Wanyun Li, Bangchuan Zhao, Jin Bai, Peiyao Wang, Yunjie Mao, Ke Xiao, Xuebin Zhu, Yuping Sun
Summary: The surface modification method via NH4H2PO4 assisted pyrolysis improves the Coulombic efficiency of Li1.2Mn0.54Ni0.13Co0.13O2 by generating appropriate oxygen vacancies, Li3PO4, and a spinel phase in the surface layer of LMR microspheres. This method effectively suppresses oxygen release and enhances lithium-ion diffusion, mitigating the dissolution of transition metal ions.
Article
Nanoscience & Nanotechnology
Peiyao Wang, Bangchuan Zhao, Jin Bai, Hongyang Ma, Wanyun Li, Yunjie Mao, Ke Xiao, Xuebin Zhu, Yuping Sun
Summary: In this study, a novel Mo2N/CoN nanotube material was synthesized, where the CoN component undergoes a conversion reaction, while Mo2N exhibits intercalation reaction feature. Moreover, the nanotube hollow structure of Mo2N/CoN provides more active sites and a short pathway for Li+ ions and electrons diffusion, as well as effectively buffering the volume change of the material. As a result, the Mo2N/CoN nanotube anode demonstrates excellent electrochemical properties.
SCRIPTA MATERIALIA
(2023)
Article
Chemistry, Multidisciplinary
Yunjie Mao, Jin Bai, Shuai Lin, Peiyao Wang, Wanyun Li, Ke Xiao, Siya Wang, Xuebin Zhu, Bangchuan Zhao, Yuping Sun
Summary: In this study, a novel 3D interconnected VS2 perpendicular to V4C3Tx heterostructure material was prepared and used to improve the performance of aqueous zinc-ion batteries. The material showed high specific capacity and excellent rate capability for the cathode, while effectively suppressing zinc dendrite growth for the anode. The battery exhibited a long cycling lifespan, making it a promising candidate for large-scale energy storage applications.
Article
Chemistry, Multidisciplinary
Jiafeng Zhou, Jin Bai, Yunjie Mao, Hongyang Ma, Xuebin Zhu, Bangchuan Zhao, Yuping Sun
Summary: Yolk-shell Co3V2O8 microspheres with abundant mesopores are fabricated through the magneto-solvothermal method followed by a proper heat-treatment process, resulting in a unique structure that enables excellent lithium-ion storage performance. The applied magnetic field in the solvothermal process reduces surface energy and promotes the growth of Co3V2O8 particles, forming the yolk-shell architecture. The material possesses a higher surface area, more sufficient void space, and shorter ion/electron transport distance, facilitating charge transfer and accommodating volume change during charge/discharge.
NEW JOURNAL OF CHEMISTRY
(2023)
