Article
Chemistry, Physical
Wei Tian, Guyao Li, Shuang Lv, Ning Ma, Zongrong Wang, Yu Tang, Piyi Du
Summary: This study successfully obtained composite thin films with high magnetoelectric coupling via phase separation, controlling and independently distributing constituent magnetic phase pillar array. The films show significant change in magnetization, demonstrating a giant ME coupling effect that can be cost-effectively and widely applied in the Si-based chips area.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Electrical & Electronic
Lin Li, Changrong Zhou, Yuanlei Zheng, Yusong Du, Changlai Yuan, Lei Ma, Jingtai Zhao, Guanghui Rao
Summary: The effects of LSMO thickness on the microstructure, magnetic characteristics, dielectric behavior, and energy storage performances of BNT-6BT/LSMO composite films were investigated. Compared with pure BNT-6BT film, the composite films with polycrystalline structure showed larger dielectric constant, slimmer hysteresis loop, and lower remnant polarization. The magnetization and polarization of composite films weakened with the increase of LSMO thickness due to the influence of crystalline size and strain gradient field.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Materials Science, Multidisciplinary
Lanxia Hao, Hongbo Cheng, Jun Ouyang, Yu Huan, Jing Yan
Summary: Polycrystalline K0.5Na0.5NbO3 (KNN) thin films were successfully integrated on Si substrates via RF magnetron sputtering at 400 degrees C. These films exhibited polycrystalline orthorhombic phase and showed clear ferroelectric characteristics without post-deposition annealing. The KNN films demonstrated high dielectric constant, low loss tangent, and large dielectric tunabilities, indicating their potential for tunable dielectric applications.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Nanoscience & Nanotechnology
Chen Jiang, Hao Liu, Zhuoliang Liu, Xiaomin Ren, Bojie Ma, Jun Wang, Jian Li, Shuaicheng Liu, Jiacheng Lin, Kai Liu, Xin Wei, Qi Wang
Summary: The reliability of silicon-based III-V quantum well lasers, particularly those on an on-axis Si (001) substrate, is crucial for the development of Si-based photonic and optoelectronic integrated circuits. Experimental advancements have been made by inserting strained InAlAs layers into the AlGaAs cladding layers to prevent misfit-dislocation formation, resulting in longer lifetime and higher operating temperatures. Further improvements in device reliability will depend on reducing threading-dislocation density in the GaAs/Si virtual substrate.
Article
Materials Science, Multidisciplinary
TingXian Li, Ruolan Li, Yuhao Chen, Jinyang Liu, Bingjie Li, Lin Ju, Kuoshe Li, Zhou Hu
Summary: This study investigated the thickness-dependent strain-relaxation behavior and its impact on the magnetic, electric properties, and magnetoelectric coupling effect of highly c-axis oriented BFO films grown on (001) oriented Si substrates. The results showed that as the strain relaxes with increasing thickness, the remnant polarization and coercive field decreased. The BFO films also exhibited weak ferromagnetic hysteresis loops with low coercive field and small remnant magnetization, and the saturated magnetization and remnant magnetization decreased with increasing film thickness. The room temperature dynamic magnetoelectric coupling was confirmed by the decreasing transverse magnetoelectric voltage coefficients due to strain relaxation and the maximum coefficient was around 265 mV/cm·Oe when the film thickness was 50 nm.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Lanxia Hao, Hongbo Cheng, Jun Ouyang, Yu Huan, Jing Yan
Summary: In this study, polycrystalline K0.5Na0.5NbO3 (KNN) thin films were successfully integrated on Si substrates at 400 degrees C via RF magnetron sputtering, exhibiting good ferroelectric properties and tunable dielectric capabilities.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Bingwen Liu, Yurun Zhang, Linjing Zhang, Qiuting Yuan, Wei Zhang, Yubao Li
Summary: In this study, a flexible Pt/W/Hf0.5Zr0.5O2/W/Pt multilayer stack with excellent ferroelectric properties was successfully fabricated on a flexible substrate using controlled spalling technology. It demonstrated outstanding mechanical resilience and maintained superior polarization, retention, and endurance performance, making it highly suitable for practical application in wearable electronics.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Rotem Zilberberg, Iryna Polishchuk, Lotan Portal, Silvia Milita, Giuseppe Falini, Alexander Katsman, Boaz Pokroy
Summary: The study introduces a self-driven approach for patterning metal and semiconductor surfaces by solidifying eutectic Au-Si thin films on Si(001) substrates. The study confirms the orientation relationship and lattice mismatch at the Au-Si interface using selected area electron diffraction and synchrotron radiation scattering techniques. The study highlights the potential application of substrate-oriented pattern formation in other systems.
Article
Materials Science, Multidisciplinary
Igor Bychkov, Sergey Belim, Ivan Maltsev, Vladimir Shavrov
Summary: This paper investigates the behavior of 2D ferromagnetic films on a ferroelectric substrate with the simulation of a Frenkel-Kontorova potential. The effect of an electric field on the substrate leads to its deformation, resulting in a decrease in the film's Curie temperature. The Ising model and the Wolf cluster algorithm are used to describe the magnetic behavior of the film.
Article
Physics, Applied
Hao Zhang, Jiabin Yan, Ziqi Ye, Fan Shi, Jinlong Piao, Wei Wang, Xumin Gao, Hongbo Zhu, Yongjin Wang, Yuhuai Liu, Hiroshi Amano
Summary: GaN-based devices have experienced rapid development in recent decades, offering significant research value and promising application prospects. Monolithically integrating different GaN devices into a single chip enables the development of low power consumption optoelectronic systems with reduced costs. The proposed top-down approach allows the direct integration of a transmitter, modulator, waveguide, beam splitter, receiver, and monitor onto a conventional GaN-on-silicon wafer, facilitating data communication through light propagation.
APPLIED PHYSICS LETTERS
(2022)
Article
Physics, Multidisciplinary
Chaodan Chi, Jiajie Lin, Xingyou Chen, Chengli Wang, Ziping Li, Liping Zhang, Zhanglong Fu, Xiaomeng Zhao, Hua Li, Tiangui You, Li Yue, Jiaxiang Zhang, Niefeng Sun, Peng Gao, Robert Kudrawiec, Shumin Wang, Xin Ou
Summary: This paper demonstrates and compares InGaAs p-i-n photodetectors on InP/SiO2/Si (InPOI) substrate fabricated by ion-slicing technology with identical devices on a commercial InP substrate. The photo responsivities at 1.55 μm are similar, indicating comparable performance between the two devices. The ion-slicing technology shows promise in enabling high-quality Si-based InP platforms for full photonic integration on a Si substrate.
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
(2021)
Article
Physics, Applied
Shivendra K. Rathaur, Robin Khosla, Satinder K. Sharma
Summary: The study demonstrates the potential advantages of MFIS devices prepared using the Pt/SrBi2Ta2O9/La2O3/Si structure in nonvolatile memory applications, showing a high memory window and long-term data retention capability.
APPLIED PHYSICS LETTERS
(2021)
Article
Physics, Applied
So Yeon Lim, Min Sun Park, Ahyoung Kim, Sang Mo Yang
Summary: The study investigated the nonlinear response of domain wall velocity to an external electric field in ferroelectric Si-doped HfO2 thin film capacitors. The results confirmed the reliability of PFM images and observed thermally activated creep and flow regimes. The thin film was found to have random-field defects with a dynamic exponent of mu = 1, consistent with the Lorentzian distribution of characteristic switching time indicated in the switching current data.
APPLIED PHYSICS LETTERS
(2021)
Article
Materials Science, Ceramics
Shahzad Hussain, Roger Amade, Adrian Boyd, Arevik Musheghyan-Avetisyan, Islam Alshaikh, Joan Marti-Gonzalez, Esther Pascual, Brian J. Meenan, Enric Bertran-Serra
Summary: Covering vertically oriented graphene nanowalls with silicon can enhance the performance of supercapacitors, providing higher areal capacitance and better cycling stability.
CERAMICS INTERNATIONAL
(2021)
Article
Physics, Applied
Sudipta Goswami, Shubhankar Mishra, Kausik Dana, Ashok Kumar Mandal, Nitai Dey, Prabir Pal, Biswarup Satpati, Mrinmay Mukhopadhyay, Chandan Kumar Ghosh, Dipten Bhattacharya
Summary: Room-temperature magnetoelectric multiferroicity is observed in c-axis oriented GaFeO3 thin films grown on (100)Si substrates. The films exhibit both epitaxial and chemical strain, resulting in the formation of finer magnetic domains and a large magnetoelectric coupling. The presence of both smaller and larger magnetic domains is confirmed by magnetic force microscopy. The strong multiferroicity of these epitaxial GaFeO3 thin films on (100)Si substrates opens up opportunities for integration with Si-based electronics.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Chemistry, Physical
Haoyang Sun, Zhen Luo, Chuanchuan Liu, Chao Ma, Zijian Wang, Yuewei Yin, Xiaoguang Li
Summary: This study reports a flexible FTJ memristor grown on a mica substrate, which exhibits stable voltage-tuned multistates and robust resistive switching behavior after multiple bending cycles. Artificial neural network simulations based on experimental device behaviors demonstrate high recognition accuracies, highlighting the potential applications of this flexible FTJ as a data storage and processing device.
JOURNAL OF MATERIOMICS
(2022)
Article
Chemistry, Physical
Hengli Duan, Guinan Li, Hao Tan, Chao Wang, Qian Li, Chuanchuan Liu, Yuewei Yin, Xiaoguang Li, Zeming Qi, Wensheng Yan
Summary: In this study, a strategy to tune the interlayer exchange interaction of a centimeter-scale MoS2 bilayer by introducing Co ion substitution and sulfur vacancy modulation is reported. The transformed magnetic interaction from antiferromagnetism to ferromagnetism is confirmed through experimental characterization and theoretical calculations, showing enhanced magnetization due to altered interlayer orbital hybridizations and intralayer ferromagnetism. This work opens up new possibilities for manipulating interlayer exchange interactions with defects in two-dimensional magnetic materials.
Article
Nanoscience & Nanotechnology
Xinzhe Du, Haoyang Sun, He Wang, Jiachen Li, Yuewei Yin, Xiaoguang Li
Summary: Hf0.5Zr0.5O2-based ferroelectric tunnel junction (FTJ) memristor exhibits high-speed switching of 20 ns, a giant electroresistance ratio of around 834, and good retention exceeding 10(4) s, with multiple states of 8 or three bits. As a solid synaptic device, adjustable synapse functions such as long-term potentiation, long-term depression, and spike-timing-dependent plasticity have been achieved.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Zhizhan Dai, Zhiwei Bao, Song Ding, Chuanchuan Liu, Haoyang Sun, He Wang, Xiang Zhou, Yuchen Wang, Yuewei Yin, Xiaoguang Li
Summary: The study developed nanocomposites based on polyimide-poly(amic acid) copolymers with a very low amount of boron nitride nanosheets, significantly enhancing the energy density and efficiency of high-temperature capacitors. Experimental results demonstrate outstanding performance of the high-temperature polymer-based capacitors under actual working conditions, withstanding charge-discharge cycles and high-temperature endurance tests.
ADVANCED MATERIALS
(2022)
Article
Multidisciplinary Sciences
Zhen Luo, Zijian Wang, Zeyu Guan, Chao Ma, Letian Zhao, Chuanchuan Liu, Haoyang Sun, He Wang, Yue Lin, Xi Jin, Yuewei Yin, Xiaoguang Li
Summary: A high-performance synaptic device based on ferroelectric tunnel junction has been designed and established. This device exhibits ultrafast speed, low power consumption, and multiple non-volatile states. Experimental results show that this device achieves high online learning accuracy in recognizing fashion product images and demonstrates good robustness to input image noise.
NATURE COMMUNICATIONS
(2022)
Article
Physics, Applied
Qiuwei He, Siegbert Schmid, Xue Chen, Biaolin Peng, ChunChun Li, Changzheng Hu, Laijun Liu, Manuel Hinterstein
Summary: This paper reports a novel lead-free tungsten bronze type ceramic, Sr5BiTi3Nb7O30, which exhibits second-order non-linear optical behavior and ferroelectric properties. The disorder on the A and B sites in Sr5BiTi3Nb7O30 leads to strong frequency dispersion and a low phase-transition temperature. The temperature dependence of the dielectric responses is described using a statistical model, and the calculated sizes of polar nanoregions imply a more diffuse ferroelectric transition.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Materials Science, Ceramics
Yingzhi Meng, Kang Liu, Xiuyun Zhang, Xiuyun Lei, Jun Chen, Zhao Yang, Biaolin Peng, Changbai Long, Laijun Liu, Chunchun Li
Summary: This study investigated the colossal-permittivity behavior in rare-earth doped BaTiO3 ceramics and identified the coupling of point defects as well as the effects of internal barrier layer capacitance and surface barrier layer capacitor. The study highlights the potential applications of these materials in the miniaturization of electronic components and high-energy storage.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Physics, Applied
Xiang Zhou, Haoyang Sun, Zhen Luo, Haoyu Zhao, Deshan Liang, Hasnain Mehdi Jafri, Houbing Huang, Yuewei Yin, Xiaoguang Li
Summary: Exotic polarization domain configurations in BiFeO3 nanoislands have been achieved, showing promise for next-generation nanoelectronics and high-density information storage.
APPLIED PHYSICS LETTERS
(2022)
Article
Multidisciplinary Sciences
Yang Wang, Shuhao Wang, Yanze Meng, Zhen Liu, Dijie Li, Yunyang Bai, Guoliang Yuan, Yaojin Wang, Xuehui Zhang, Xiaoguang Li, Xuliang Deng
Summary: This study presents a tooth whitening strategy based on pyro-catalytic effect, which utilizes temperature fluctuations induced by oral motion to break down stains and whiten teeth.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Zhiwei Chen, Haoyang Sun, Xiang Zhou, Hengli Duan, Wensheng Yan, Yuewei Yin, Xiaoguang Li
Summary: Room temperature electric field controlled magnetism shows great potential for designing low-power and high-speed spintronic devices. By using ferroelectric switching driven oxygen ion migration, the magnetic properties can be reversibly manipulated by tuning the ferroelectric polarization of the BiFeO3 layer.
JOURNAL OF MATERIOMICS
(2022)
Article
Chemistry, Multidisciplinary
Xiao-Feng Pan, Guan-Hua Yu, Huai-Ling Gao, Zhe-Zhao Wang, Zhiwei Bao, Xiaoguang Li, Shu-Hong Yu
Summary: A scalable method for the efficient preparation of ultrathin rectorite nanosheets (RNs) from natural resources has been developed, and they are co-assembled with aramid nanofibers (ANFs) to form large-scale nanopapers with enhanced properties.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Physical
Jiangheng Jia, Song Ding, Zhiwei Bao, Zhizhan Dai, Shengchun Shen, Yuewei Yin, Xiaoguang Li
Summary: In this study, biodegradable poly(L-lactic acid) (PLLA) films were prepared using a simple solvent casting method. The crystallized PLLA film exhibited enhanced dielectric performance and recoverable energy density. It also showed remarkable cyclic stability and self-healing ability. With its eco-friendliness, high performance, and low-cost preparation method, the crystallized biodegradable PLLA film is a promising candidate for high-energy-storage capacitors.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Physics, Applied
Jiachen Li, He Wang, Xinzhe Du, Zhen Luo, Yuchen Wang, Weiping Bai, Xingsong Su, Shengchun Shen, Yuewei Yin, Xiaoguang Li
Summary: In this work, the ferroelectric endurance properties of Hf0.5Zr0.5O2 (HZO) film under various pulse voltages and pulse widths were systematically investigated. It was found that the fatigue severity initially increases and then decreases with increasing pulse voltage or width. Our work provides a universal way to weaken fatigue and improve endurance performance of HfO2-based ferroelectric random access memory devices.
APPLIED PHYSICS LETTERS
(2023)
Article
Chemistry, Physical
Song Ding, Zhiwei Bao, Yiwei Wang, Zhizhan Dai, Jiangheng Jia, Shengchun Shen, Yuewei Yin, Xiaoguang Li
Summary: Current commercial dielectric polymers cannot meet the increasing demand for advanced capacitors under harsh thermal conditions. In this study, we designed and prepared all-organic polyetherimide/poly(arylene ether urea) polymer blend films, which achieved a record-high discharged energy density with high efficiency at 150 degrees C. These films also exhibited excellent temperature stability and long-term reliability under working conditions of hybrid vehicles. The introduction of molecular trapping centers greatly reduced high-temperature conduction loss, contributing to the excellent dielectric energy storage performances.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Multidisciplinary
Zhiwei Bao, Song Ding, Zhizhan Dai, Yiwei Wang, Jiangheng Jia, Shengchun Shen, Yuewei Yin, Xiaoguang Li
Summary: This study demonstrates a convenient and competitive strategy of preparing ultraviolet-irradiated cyclic olefin copolymer films to improve the energy storage performance at high temperatures. The irradiated films show higher dielectric constant, breakdown strength, and mechanical properties compared to the unirradiated film, resulting from the emergence of carbonyl groups and a cross-linking network. As a result, a superior discharged energy density of approximately 3.34 J cm(-3) is achieved at 150 degrees C, surpassing current dielectric materials. This research provides a valuable pathway for high-energy-density polymer-based capacitor devices in harsh environments.
MATERIALS HORIZONS
(2023)
