Article
Chemistry, Multidisciplinary
Jai-Lin Tsai, Chun-Yu Sun, Jhih-Hong Lin, Yi-Yuan Huang, He-Ting Tsai
Summary: Comparison between a sputtered FePt(BN, Re, C) film and a reference sample FePt(BN, Ag, C) shows that both films exhibit high anisotropy field (H-k) and perpendicular magnetocrystalline anisotropy (K-u), although the reference sample has slightly higher values. The films also show similar tendencies in the angular dependence of the switching field. In terms of microstructure, both films have granular structure and columnar grains, with similar average grain sizes and distributions.
Article
Materials Science, Coatings & Films
Jai-Lin Tsai, Chun-Yu Sun, Jun-Kai Lin, Xue-Chang Lu, Sin-Han Huang
Summary: The (001) textured L1(0) FePt film is a promising candidate material for future heat assisted magnetic recording technology. The material of the epitaxial intermediate layer for the FePt based granular film was chosen considering the surface energy and lattice mismatch between FePt and MgO-based materials. In this study, a (00L) textured FePt (Ag, C)/ MgTiOBN/CrRu film was prepared and the MgTiOBN intermediate layer was thoroughly explored. The FePt film showed high perpendicular magneto-crystalline anisotropy and out-of-plane coercivity, and exhibited lower in-plane magnetization and nonuniform trapezoidal island-like grains.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Hu Huang, Lingqiong Wu, Shengbin Cheng, Xiaofeng Wu, Shiping Zhan, Yunxin Liu
Summary: The study significantly improves the response rate of the optical temperature sensing of upconversion nanoparticles by coupling with Ag@C@Ag nanoparticles, leading to a potential application in the field of nanoscale temperature sensing.
Article
Physics, Applied
Alaaedeen R. Abuzir
Summary: The synthesis and characterization of L1(o) FePt phase films with c-axis orientation in the perpendicular direction on SiO2/Si(100) substrates by RF magnetron sputtering are reported. The magnetic, structural, elemental analysis, and surface morphological properties of FePt films of different thicknesses were investigated. Thinner films exhibited excellent magnetic properties, while thicker films showed a deterioration in c-axis orientation.
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
(2022)
Article
Materials Science, Multidisciplinary
Shunuo Bian, Lihua Yu, Junhua Xu, Jiadong Xu
Summary: In this study, silver was doped into ZrMoN composite film to develop a composite polyphase structure with enhanced mechanical and tribological properties. The composite film exhibited excellent mechanical properties and had the advantage of low friction coefficient in a wide temperature range.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Engineering, Environmental
Xiang Li, Yao Lu, Kefeng Cai, Mingyuan Gao, Yating Li, Zixing Wang, Miaomiao Wu, Ping Wei, Wenyu Zhao, Yong Du, Shirley Shen
Summary: A high-performance Ag/Ag2Se thermoelectric film has been successfully fabricated using a novel method. The film exhibits high power factor, electrical conductivity, flexibility, and stability. This study provides an important breakthrough for the fabrication of high-performance flexible thermoelectric films.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Nanoscience & Nanotechnology
Qi Gao, Wu Wang, Yao Lu, Kefeng Cai, Yating Li, Zixing Wang, Miaomiao Wu, Changjun Huang, Jiaqing He
Summary: A high power factor and excellent flexibility Ag/Ag2Se composite film was fabricated on a flexible nylon membrane using wet chemical synthesis and vacuum-assisted filtration techniques. The optimized composite film showed high power factor and electrical conductivity at room temperature, and retained conductivity after repeated bending cycles. This work provides a new strategy for synthesizing flexible thermoelectric films with high power factor and electrical conductivity.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Materials Science, Multidisciplinary
Zixing Wang, Qi Gao, Wu Wang, Yao Lu, Kefeng Cai, Yating Li, Miaomiao Wu, Jiaqing He
Summary: This study introduces a high-performance Ag2Se/Ag/PEDOT composite film with high electrical conductivity and flexibility. By utilizing PEDOT coated Se nanowires as templates, PEDOT coated Ag2Se/Ag composite powders were prepared and then fabricated into composite films. The flexibility of the composite film is attributed to the synergistic effect of the nylon membrane and PEDOT, which also contribute to its excellent electrical conductivity and thermoelectric performance.
MATERIALS TODAY PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
Lu Huang, Wenting Wang, Xiyi Yuan, Qi Zhang, Mukhtiar Ali, Qingyu Meng, Wenjun Sun, Li Zhao
Summary: This study investigates the nonlinear absorption properties of Ag/Sb2Se3 composite films. Annealing was found to tune the nonlinear absorption types of the films, and the addition of Ag was able to enhance the nonlinear absorption properties compared to single Sb2Se3. Increasing Ag sputtering power and incident laser energy further enhanced the nonlinear absorption properties of the composite films.
Article
Nanoscience & Nanotechnology
Ippei Suzuki, Shoichi Kubo, Hosein Sepehri-Amin, Yukiko K. Takahashi
Summary: Epitaxial thin films of L1(0)-ordered FePt alloys are crucial in magnetic recording and spintronics applications due to their large perpendicular magnetic anisotropy. This study demonstrates the importance of controlling growth mode in achieving superior properties, and highlights the role of surface free energy in tuning the growth mode to enhance PMA and surface flatness in FePt films on MgO substrates.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Multidisciplinary Sciences
Marcin Lapinski, Robert Koziol, Wojciech Skubida, Piotr Winiarz, Rowa Mahjoub Yahia Elhassan, Wojciech Sadowski, Barbara Koscielska
Summary: This paper investigates the optical properties of silver, copper and silver-copper composite nanostructures. The metallic nanostructures were fabricated by thermal disintegration of thin films in an argon atmosphere. A novel method based on resistance measurements was used to in-situ observe the formation process. The influence of initial film material and thickness on the disintegration temperature was examined. The electrical measurements were validated by scanning electron microscopy, and the behavior of the nanostructures was studied using XPS. The formation of silver-copper nanocomposite structures was confirmed by UV-vis spectroscopy, which showed plasmon resonance with two characteristic peaks.
SCIENTIFIC REPORTS
(2023)
Article
Chemistry, Multidisciplinary
Dong Zhao, Ling Chang, Xiaoyang Wang, Kexin Liu, Qunshou Wang, Zhimeng Sun, Chuanzhi Liu, Jianjun Wang, Qiang Wang, Wenli Pei
Summary: In this work, L1(0)-FePt nanoparticles with high coercivity and ordering degree were successfully synthesized by adding Ag. The evolution process of Ag in the ordering transition was investigated, and it was found that the diffusion of Ag played a significant role in the ordering rearrangement of Fe and Pt atoms, resulting in the formation of a highly ordered structure.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Materials Science, Coatings & Films
Hong Zhang, Rui Zhang, Xiaoyu Zhao, Xindong Li, Botong Chen, Yuhong Li, Peng Wang
Summary: The representative FCC structured NiCr(MoNb)x-Ag (x = 0, 0.65 and 1.05) composite films were developed and studied for their microstructure, mechanical, and tribological properties. It was found that small amounts of nm-sized Ag particles are dispersed in the thin film matrix. The NiCr(MoNb)1.05-Ag composite film showed the best tribological performance with low friction coefficients at high temperatures.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Materials Science, Coatings & Films
Yanjun Chen, Jianfang Sun, Yong Liu, Qiang Li, Shu Xiao, Fenghua Su
Summary: In this study, MoS2-Cr-Ag composite films with different Ag content were synthesized by magnetron sputtering, and their microstructure, mechanical and high-temperature tribological properties were systematically investigated. The results showed that the MoS2-Cr-Ag composite films had a preferred orientation of (002) crystal plane, leading to a dense structure. The addition of Ag significantly improved the micro-hardness of the films, and the composite films exhibited superior tribological properties at both room temperature and 350 degrees C due to the inhibition of MoS2 oxidation and the formation of a dense transfer layer.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Wenhang Wu, Zheng Liang, Meng Jia, Yuwei Li, Xiongcong Guan, Yunfeng Zhan, Jinxiu Wen, Jianyi Luo
Summary: A flexible thermoelectric device with high power factor and electrical conductivity was successfully fabricated using a flexible nylon substrate and Ag2Se/Ag composite film. The device exhibited excellent flexibility and showed promising performance for powering wearable electronics. This study provides a potential path to design improved flexible thermoelectric devices.
Article
Chemistry, Physical
Kaiyang Wang, Jingsheng Chen, Xiaobing Yan
Summary: This study presents a facile method to improve the electronic performance of MXene Ti3C2 memristor by Ag nanoparticle doping. The doping method exhibits bidirectional continuous current transition behavior and has the potential to implement decimal arithmetic operations.
Article
Materials Science, Multidisciplinary
Tianqi Yu, Fuchao He, Jianhui Zhao, Zhenyu Zhou, Jingjing Chang, Jingsheng Chen, Xiaobing Yan
Summary: This study introduces a new ferroelectric memristor that utilizes polarized ferroelectric domains for multi-level storage and biological synapse function simulation, addressing the instability issue in traditional memristors.
SCIENCE CHINA-MATERIALS
(2021)
Article
Physics, Applied
P. F. Chen, D. Lan, C. Liu, X. H. Wu, A. Khandelwal, M. S. Li, C. J. Li, P. Yang, X. J. Yu, J. S. Chen, S. J. Pennycook, A. Ariando, Z. Huang, G. M. Chow
Summary: The study analyzes the correlation between oxygen octahedral rotation and cation-lattice symmetry in ABO(3) functional perovskite oxides, using the example of interface-engineered La2/3Sr1/3MnO3 layers. It demonstrates how out-of-phase octahedral rotations can lead to asymmetric diffraction patterns in reciprocal space mapping, and how reciprocal space mapping can identify different octahedral rotations in multilayer heterostructures, providing insight into the complexities of oxide heterostructures.
JOURNAL OF APPLIED PHYSICS
(2021)
Review
Nanoscience & Nanotechnology
Jing Zhou, Jingsheng Chen
Summary: Neuromorphic computing, which emulates a biological brain and is seen as a promising approach for next-generation artificial intelligence, is constrained by a lack of dedicated hardware. Spintronics, a fast-evolving discipline that exploits the spin degree of freedom in electronics, shows great potential in combination with neuromorphic computing and traditional manufacturing technologies.
ADVANCED ELECTRONIC MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Jingjuan Wang, Gang Cao, Kaixuan Sun, Jinling Lan, Yifei Pei, Jingsheng Chen, Xiaobing Yan
Summary: By systematically investigating the effects of different alloy electrode ratios on the performance of HfOx devices, this study found that devices with an Ag-Cu ratio of 63:37 exhibited superior performance characteristics.
Article
Physics, Applied
Jianhui Zhao, Yong Sun, Wanheng Lu, Yifei Pei, Zhenyu Zhou, Rui Guo, Kaiyang Zeng, Baoting Liu, Qiuming Peng, Jingsheng Chen, Xiaobing Yan
Summary: This study demonstrates the stable long-time retention of multi-level quantum conductance states in highly oriented crystalline vanadium dioxide. Grain boundaries act as reservoirs for oxygen vacancies and confine the oxygen vacancy diffusion in the narrow grain boundaries. This is crucial for realizing quantum conductance-based electronic devices.
APPLIED PHYSICS REVIEWS
(2022)
Article
Engineering, Electrical & Electronic
Hui He, Yifei Pei, Jingjuan Wang, Zichang Zhang, Jing Liu, Lei Yan, Ying Zhao, Xiaoyu Li, Yongxin Wei, Jingsheng Chen, Xiaobing Yan
Summary: In this study, a new double-layer structure of memristor was designed to improve its performance, and a 1T-1M structure was designed based on its performance to calculate the Hamming weight of binary strings. The results showed that the devices have stable state switching and concentrated resistance distribution, and the error rate and stability of the calculation are better than existing methods.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2022)
Article
Chemistry, Multidisciplinary
Haining Zheng, Rongrong Zhang, Xiao Wu, Qihan Zhang, Zhenyue Wu, Walter P. D. Wong, Jingsheng Chen, Qing-Hua Xu, Kian Ping Loh
Summary: Hybrid organic-inorganic perovskites (HOIPs) are promising stimuli-responsive materials (SPMs) with the capability to undergo structural changes and exhibit unique properties upon mechanical deformation. It has been discovered that chirality of the organic cations plays a significant role in strain-induced phase conversion. By applying mechanical strain, chiral halide pseudo-perovskite single crystals can undergo a crystal-to-crystal conversion from a 0D structure to a 1D structure, accompanied by the incorporation of new interactions that affect the band gap and magnetic properties.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Lizhu Ren, Liang Liu, Xiaohe Song, Tieyang Zhao, Xiangjun Xing, Yuan Ping Feng, Jingsheng Chen, Kie Leong Teo
Summary: Magnetic Weyl semimetals (MWSMs) have unconventional transport phenomena and can be electrically manipulated by spin-orbit torque (SOT). High-quality Co2MnGa film is confirmed to have MWSM state, and its magnetization and topology can be controlled electrically. Current-induced SOT switches the topological magnetic state of Co2MnGa in both 180-degree and 90-degree manners. This work opens up more possibilities for spintronic applications based on topological materials.
Article
Engineering, Electrical & Electronic
Jing Zhou, Liang Liu, Xinyu Shu, Weinan Lin, Tieyang Zhao, Jingsheng Chen
Summary: Electric manipulation of magnetic moments is crucial for incorporating magnetic functionalities into integrated circuits, and spin-orbit torque (SOT) provides an effective means of achieving this. The generation of SOT relies on breaking the inversion symmetry, typically achieved through spatial asymmetry. This article reviews methods for achieving symmetry breaking through material engineering, with a focus on novel approaches for generating bulk-like SOT and unconventional SOT.
IEEE TRANSACTIONS ON MAGNETICS
(2023)
Review
Physics, Applied
Liang Liu, Tieyang Zhao, Weinan Lin, Xinyu Shu, Jing Zhou, Zhenyi Zheng, Hongliang Chen, Lanxin Jia, Jingsheng Chen
Summary: This article discusses the principles of symmetry considerations for current-induced magnetization switching and methods to break mirror symmetry. It also presents recent progress in this field and discusses the challenges and perspectives of symmetry designs for spin-orbit torque (SOT) in future fundamental studies and device applications.
APPLIED PHYSICS REVIEWS
(2023)
Article
Chemistry, Multidisciplinary
Moaz Waqar, Jianwei Chai, Lai Mun Wong, Poh Chong Lim, Shuting Chen, Weng Heng Liew, Shijie Wang, Jingsheng Chen, Qian He, Kui Yao, John Wang
Summary: The electromechanical response in lead-free polycrystalline piezoelectric thin films is significantly enhanced by utilizing lattice-defect-induced structural inhomogeneities. The large electromechanical strain in a polycrystalline film integrated on silicon is achieved by inducing self-assembled Nb-rich planar faults with a nonstoichiometric composition.
Article
Chemistry, Multidisciplinary
Bangmin Zhang, Chunhua Tang, Ping Yang, Jingsheng Chen
Summary: The spin-orbit interaction (SOI) is important in material design. In this study, it was found that the asymmetric structure influences the transition between Rashba SOI and Dresselhaus SOI through ferroelectric polarization.
MATERIALS HORIZONS
(2023)
Article
Chemistry, Physical
Shizhong Yue, Hanlin Cheng, Hao He, Xin Guan, Qiujian Le, Xinyu Shu, Shu Shi, Jingsheng Chen, Jianyong Ouyang
Summary: High Seebeck coefficient and conductivity are crucial for thermoelectric materials. This study shows the photo-enhanced Seebeck effect on flexible and highly conductive composites of PEDOT:PSS and TiO2 nanoparticles, increasing Seebeck coefficient and power factor under UV light exposure.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Review
Chemistry, Multidisciplinary
Kaixuan Sun, Jingsheng Chen, Xiaobing Yan
Summary: This article reviews the applications and development of memristors in the field of neural networks, pointing out that memristor architecture is expected to become an alternative to the von Neumann architecture and address the challenges of the neural network and big data era.
ADVANCED FUNCTIONAL MATERIALS
(2021)
