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arXiv 2024年

作者： Oliva, Robert Ritov, Esther Horani, Faris Etxebarria, Inĩgo Budniak, Adam K. Amouyal, Yaron Lifshitz, Efrat Guennou, Mael Department of Physics and Materials Science University of Luxembourg 41 rue du Brill BelvauxL-4422 Luxembourg Schulich Faculty of Chemistry Solid State Institute Russell Berrie Nanotechnology Institute Helen Diller Quantum Center Nancy and Stephen Grand Technion Energy Program Technion−Israel Institute of Technology Haifa3200003 Israel Fisika Saila and EHU Quantum Center Euskal Herriko Unibertsitatea UPV/EHU Sarriena Auzoa z/g Basque Country Leioa48940 Spain Department of Materials Science and Engineering Technion-Israel Institute of Technology Haifa3200003 Israel

Alloyed MnxZn1−xPS3 samples have been grown covering the whole compositional range and studied by means of Raman spectroscopy at temperatures covering from 4K up to 850K. Our results, supported by SQUID magnetic measurements, allowed, from one hand, to complete the magnetic phase diagram of MnxZn1−xPS3 and establish x≥0.3 as the composition at which the alloy retains antiferromagnetism and, from the other hand, to identify the Raman signatures indicative of a magnetic transition. The origin of these Raman signatures is discussed in terms of spin-phonon coupling resulting in the appearance of low- and high-frequency zone-folded phonon modes. For the alloy, an assignment of the 1st and 2nd order modes is provided with the aid of first-principle lattice-dynamical calculations. The compositional dependence of all phonon modes is described and the presence of zone-folded modes is shown to take place for both, the alloy and MnPS3. Finally, a comparison of the Raman spectra of ZnPS3 to other compounds of the transition-metal phosphorous trisulfide family allowed shows that low-frequency phonon peaks exhibit an abnormally large broadening. This is consistent with previous claims on the occurrence of a second-order Jahn-Teller effect that takes place for ZnPS3 and Zn-rich MnxZn1−xPS3 Copyright © 2024, The Authors. All rights reserved.

关键词： Phonons

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Challenges for and Pathways toward Li-MetalBased All-solid-state Batteries

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ACS ENERGY LETTERS 2021年第4期6卷 1399-1404页

作者： Albertus, Paul Anandan, Venkataramani Ban, Chunmei Balsara, Nitash Belharouak, Ilias Buettner-Garrett, Josh Chen, Zonghai Daniel, Claus Doeff, Marca Dudney, Nancy J. Dunn, Bruce Harris, Stephen J. Herle, Subramanya Herbert, Eric Kalnaus, Sergiy Libera, Joesph A. Lu, Dongping Martin, Steve McCloskey, Bryan D. McDowell, Matthew T. Meng, Y. Shirley Nanda, Jagjit Sakamoto, Jeff Self, Ethan C. Tepavcevic, Sanja Wachsman, Eric Wang, Chunsheng Westover, Andrew S. Xiao, Jie Yersak, Thomas Department of Chemical and Biomolecular Engineering University of Maryland College Park Maryland 20742 United States Ford Motor Company Dearborn Michigan 48121 United States Mechanical Engineering Department University of Colorado Boulder Colorado 80309 United States Department of Chemical and Biomolecular Engineering and Lawrence Berkeley National Laboratory Materials Sciences Division University of California Berkeley California 94720 United States Energy and Transportation Science Division Oak Ridge National Laboratory Oak Ridge Tennessee 37831 United States Solid Power Inc. Louisville Colorado 80027 United States Chemical Sciences and Engineering Division Argonne National Laboratory 9700 South Cass Avenue Argonne Illinois 60439 United States Lawrence Berkeley National Laboratory Energy Storage and Distributed Resources Division University of California Berkeley California 94720 United States Department of Materials Science and Engineering University of California Los Angeles California 90095 United States Applied Materials Inc. 3225 Oakmead Village Drive B12_2F6 Santa Clara California 95054 United States Department of Materials Science and Engineering Michigan Technological University Houghton Michigan 49931 United States Energy and Environmental Directorate Pacific Northwest National Laboratory Richland Washington 99352 United States Department of Materials Science & Engineering Iowa State University of Science & Technology Ames Iowa 50011 United States Woodruff School of Mechanical Engineering and School of Materials Science and Engineering Georgia Institute of Technology Atlanta Georgia 30332 United States Department of NanoEngineering and Materials Science and Engineering Program University of California San Diego La Jolla California 92093 United States Department of Materials Science and Engineering and Department of Mechanical Engineering University of Michigan Ann Arbor Michigan 48109 United States Chemical and Materials Systems Laborat

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Magnetochiral Tunneling in Paramagnetic Co1/3NbS2

arXiv

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arXiv 2024年

作者： Lim, Seongjoon Singh, Sobhit Huang, Fei-Ting Pan, Shangke Wang, Kefeng Kim, Jaewook Kim, Jinwoong Vanderbilt, David Cheong, Sang-Wook Rutgers Center for Emergent Materials Department of Physics and Astronomy PiscatawayNJ08854 United States Department of Mechanical Engineering University of Rochester RochesterNY14627 United States Materials Science Program University of Rochester RochesterNY14627 United States State Key Laboratory Base of Novel Function Materials and Preparation Science School of Material Sciences and Chemical Engineering Ningbo University Zhejiang Ningbo315211 China Department of Physics and Astronomy Rutgers University PiscatawayNJ08854 United States

Electric currents have the intriguing ability to induce magnetization in nonmagnetic crystals with sufficiently low crystallographic symmetry. Some associated phenomena include the non-linear anomalous Hall effect in polar crystals and the nonreciprocal directional dichroism in chiral crystals when magnetic fields are applied. In this work, we demonstrate that the same underlying physics is also manifested in the electronic tunneling process between the surface of a nonmagnetic chiral material and a magnetized scanning probe. In the paramagnetic but chiral metallic compound Co1/3NbS2, the magnetization induced by the tunneling current is shown to become detectable by its coupling to the magnetization of the tip itself. This results in a contrast across different chiral domains, achieving atomic-scale spatial resolution of structural chirality. To support the proposed mechanism, we used first-principles theory to compute the chirality-dependent current-induced magnetization and Berry curvature in the bulk of the material. Our demonstration of this magnetochiral tunneling effect opens up a new avenue for investigating atomic-scale variations in the local crystallographic symmetry and electronic structure across the structural domain boundaries of low-symmetry nonmagnetic crystals. © 2024, CC BY.

关键词： Magnetization

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High-Sensitivity 4H-Silicon Carbide MEMS Pressure Sensors for Extreme Temperature Ranges of −75 °C to 600 °C

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IEEE Transactions on Instrumentation and Measurement 2025年 74卷

作者： Wang, Lukang Yang, Yu Wang, Yabing Huo, Jinglan Wan, Nuo Zhao, You Lyu, Yi Zhao, Yulong Liu, Ming The First Affiliated Hospital of Xi’an Jiaotong University Department of Hepatobiliary Surgery Xi’an710061 China Xi’an Jiaotong University State Key Laboratory for Manufacturing Systems Engineering Electronic Materials Research Laboratory Key Laboratory of the Ministry of Education School of Electronic Science and Engineering Xi’an710049 China Xi’an Jiaotong University State Key Laboratory for Manufacturing Systems Engineering Xi’an710049 China Xidian University School of Optoelectronic Engineering Xi’an710071 China Academy of Aerospace Propulsion Technology China Aerospace Science and Technology Corporation Institute of Xi’an Aerospace Solid Propulsion Technology Shaanxi Xi’an710025 China The First Affiliated Hospital of Xi’an Jiaotong University Department of Hepatobiliary Surgery National Local Joint Engineering Research Center for Precision Surgery and Regenerative Medicine Xi’an710061 China Xi’an Jiaotong University State Key Laboratory for Manufacturing Systems Engineering Electronic Materials Research Laboratory Key Laboratory of the Ministry of Education and International Center for Dielectric Research School of Electronic Science and Engineering Xi’an710049 China

The application potential of silicon carbide (SiC) semiconductor sensors for the surveillance of extreme environmental pressure is considerably promising. Herein, a series of 4H-SiC pressure sensors with different piezoresistor configurations based on microelectromechanical system (MEMS) technology are systematically developed to achieve pressure monitoring within an extreme temperature range from - 75 °C to 600 °C. Utilizing femtosecond laser as the principal etching method, augmented by plasma and acid etching, enabled the preparation of thin 4H-SiC membranes with a minimal thickness of 25 μm. This innovative approach resulted in a notable increase in the sensitivity of 4H-SiC piezoresistive pressure sensors to 57.14 mV/MPa at 1.5 mA. The sensor in high-temperature package demonstrates a temperature coefficient of resistance (TCR) of 427 ppm/°C, a temperature coefficient of zero output of 0.12% FSO/°C, and a temperature coefficient of sensitivity (TCS) of 0.02% FSO/°C at 600 °C. The 4H-SiC sensor also performs exceptionally well at low temperatures, with its piezoresistor showing a variation of no more than 0.6 Ω at - 75 °C. This research provides promising solutions for enhancing the sensitivity and temperature robustness of direct pressure monitoring in industrial systems operating under extreme temperatures. © 1963-2012 IEEE.

关键词： Silicon carbide

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Irradiation-induced homogeneous plasticity in amorphous/amorphous nanolaminates

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Journal of materials science & Technology 2020年第22期54卷 70-77页

作者： L.Huang Z.Q.Chen P.Huang X.K.Meng F.Wang State Key Laboratory for Mechanical Behavior of Material School of Materials Science and EngineeringXi'an Jiaotong UniversityXi'an710049China Institute of Materials Engineering National Laboratory of Solid State MicrostructuresCollaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210023China State Key Laboratory for Strength and Vibration of Mechanical Structures School of Aerospace EngineeringXi'an Jiaotong UniversityXi'an710049China

Achieving homogeneous plastic deformation in metallic glasses is a long-standing goal yet to be solved in materials science. Here we investigate the effect of ion irradiation on the plastic deformation behavior of ZrCu/ZrCuNiAlSi amorphous/amorphous nanolaminates(A/ANLs) via nanoindentation testing. The experimental results indicate a dramatic change in deformation mode from multiple shear banding events to homogeneous compressive deformation before and after ion irradiation on the A/ANLs in the areas underneath the indenter. Ion irradiation-induced changes of both fraction and distribution of free volume inside each constituent layer and interfacial state in the A/ANLs may be responsible for the unusual homogeneous deformation behavior. Our results suggest that the mechanical property of A/ANLs could be modified by tuning both the inner and interfacial structure via ion irradiation.

关键词： Metallic glasses Ion irradiation Plastic deformation Nanolaminates Interface

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Linear magnetoelectric memory and training effect in the honeycomb antiferromagnet Co4Nb2O9

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Physical Review B 2023年第1期107卷 014412-014412页

作者： Yuting Chang Junfeng Wang Wei Wang Congbin Liu Bin You Meifeng Liu Shuhan Zheng Mengyi Shi Chengliang Lu Jun-Ming Liu School of Physics & Wuhan National High Magnetic Field Center Huazhong University of Science and Technology Wuhan 430074 China College of Physics and Electronic Engineering Nanyang Normal University Nanyang 473061 China Institute for Advanced Materials Hubei Normal University Huangshi 435001 China Laboratory of Solid State Microstructures Nanjing University Nanjing 210093 China

We report observation of ultrarobust linear magnetoelectric memory and significant training effect in a honeycomb antiferromagnet Co4Nb2O9, which is controllable by magnetic and electric fields. The memory states show distinct linear magnetoelectric coefficients over a broad magnetic field range. Antiferromagnetic domain evolution is believed to be responsible for the versatile memory behaviors promisingly accessible in multiferroics and other magnetoelectric materials such as topological insulators. The compensated antiferromagnetic phase essential to the magnetoelectric memory may allow to further integrate the unique merits of antiferromagnetic spintronics such as ultrahigh density and ultrafast switching.

关键词： Antiferromagnetism Electric polarization Magnetoelectric effect

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Micro-anostructured ZnFe2O4 hollow sphere/GO composite for structurally enhanced photocatalysis performance

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Rare Metals 2022年第3期42卷 813-821页

作者： Zhao, Yang-Yang Wang, Xian-Biao Xu, Qian-Kun Chakir, Soufian Xu, Yong-Fei Xu, Bao Hu, Yong-Hua Anhui Province International Research Center on Advanced Building Materials School of Materials Science and Chemical Engineering Anhui Jianzhu University Hefei China Institute of Solid State Physics Chinese Academy of Sciences Hefei China Anhui Institute of Building Science Research and Design Hefei China Anhui Key Laboratory of Tobacco Chemistry Hefei China

The pollution of organic dyes has become a serious environmental problem. It is still urgent to prepare a highly efficient and environment-friendly photocatalyst for pollutants removal. Herein, a micro-/nanostructured ZnFe2O4 hollow sphere/GO (ZnFe2O4/GO) composite photocatalyst was prepared through a one-step hydrothermal method with high performance and recycling property. The obtained micro-/nanostructured composite was assembled by ZnFe2O4 hollow spheres and GO nanosheets. The special self-assembled hollow nanosphere structure enlarged visible light harvesting. In addition, luminescence property demonstrates that the introduction of graphene oxide (GO) inhibits the recombination of electron–hole pairs, leading to enhancement of photocatalytic activity of ZnFe2O4. Under visible light irradiation, the ZnFe2O4/GO composite exhibited excellent photocatalytic activity for Congo red (93%), higher than that of the pure ZnFe2O4 hollow spheres (only 60%) and commercial ZnFe2O4 nanoparticles (40%). Moreover, the micro-/nanostructured ZnFe2O4/GO composite photocatalyst can be regenerated with high efficiency and remains over 80% activity after seven regenerations. This work not only supplies a new strategy for one-step preparation of such ZnFe2O4/GO micro-/nanostructures for structurally enhanced photocatalysis, but also provides a highly efficient photocatalyst for wastewater treatment.

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Structural Study of a 45° Twist Plus 7.5° Tilt Grain Boundary in Aluminium by HREM

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MRS Online Proceedings Library 2021年第1期589卷 353-358页

作者： M. Shamsuzzoha P. A. Deymier David J. Smith School of Mines and Energy Development and Department of Metallurgical and Materials Engineering The University of Alabama Tuscaloosa USA Department of Materials Science and Engineering University of Arizona Tucson USA Center for Solid State Science and Department of Physics and Astronomy Arizona State University Tempe USA

A [100] 45° twist plus 7.5° tilt grain boundary in aluminium prepared by cold rolling and annealing has been studied by high-resolution electron microscopy. The direct interpretability of the image features in terms of atomic column positions allows structural models of the grain boundary to be developed. The boundary exibits a high concentration of steps due to the 7.5° tilt from a perfect [100] 45° quasiperiodic misorientation. Occurrence of co-incidence and pseudo co-incidence of atomic planes across the interface appears to play an important role in the formation of steps along this boundary. Local relaxation of atoms resulting from the perturbation of the [100] 45° twist bi-crystal determines the boundary structure.

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Mechanically reprogrammable Pancharatnam-Berry metasurface for microwaves

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Advanced Photonics 2022年第1期4卷 69-79页

作者： Quan Xu Xiaoqiang Su Xueqian Zhang Lijuan Dong Lifeng Liu Yunlong Shi Qiu Wang Ming Kang Andrea Alù Shuang Zhang Jiaguang Han Weili Zhang Tianjin University Center for Terahertz Waves and College of Precision Instrument and Optoelectronics EngineeringKey Laboratory of Optoelectronic Information Technology(Ministry of Education of China)TianjinChina Shanxi Datong University Institute of Solid State Physics and College of Physics and Electronic ScienceShanxi Province Key Laboratory of Microstructure Electromagnetic Functional MaterialsDatongChina Wuhan University of Technology School of Information EngineeringWuhanChina Tianjin Normal University College of Physics and Materials ScienceTianjinChina City University of New York Advanced Science Research CenterPhotonics InitiativeNew YorkUnited States City University of New York Graduate CenterPhysics ProgramNew YorkUnited States University of Hong Kong Faculty of ScienceDepartment of PhysicsHong KongChina University of Hong Kong Department of Electrical and Electronic EngineeringHong KongChina Guilin University of Electronic Technology Guangxi Key Laboratory of Optoelectronic Information ProcessingSchool of Optoelectronic EngineeringGuilinChina Oklahoma State University School of Electrical and Computer EngineeringStillwaterOklahomaUnited States

Metasurfaces have enabled the realization of several optical functionalities over an ultrathin platform,fostering the exciting field of flat *** metasurfaces are achieved by arranging a layout of static meta-atoms to imprint a desired operation on the impinging wavefront,but their functionality cannot be *** and programmability of metasurfaces are the next important step to broaden their impact,adding customized on-demand functionality in which each meta-atom can be individually *** demonstrate a mechanical metasurface platform with controllable rotation at the meta-atom level,which can implement continuous Pancharatnam–Berry phase control of circularly polarized *** the proof-of-concept experiments,we demonstrate metalensing,focused vortex beam generation,and holographic imaging in the same metasurface template,exhibiting versatility and superior *** dynamic control of electromagnetic waves using a single,low-cost metasurface paves an avenue towards practical applications,driving the field of reprogrammable intelligent metasurfaces for a variety of applications.

关键词： reprogrammable metasurfaces Pancharatnam-Berry phase mechanical metasurfaces microwaves

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Enabling Ultra-Low Wear and Long-Lived Lubrication by Dlc–Supramolecular Gel Composite Lubrication System Under Extreme Contact Stress

SSRN

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SSRN 2023年

作者： Cai, Meirong Xie, Ao Zhang, Jiaying Xu, Hao-Zhe Wang, Xin-Gang Yu, Qiangliang Lv, Wenquan Zhou, Feng State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Lanzhou730000 China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing100049 China Shandong Laboratory of Yantai Advanced Materials and Green Manufacturing Yantai264006 China

This manuscript developed a novel DLC–supramolecular gel (HTG) composite lubrication system to achieve long-life outstanding lubrication under extreme contact stress while avoiding sealing challenges relying on the unique thixotropic properties of the gel. DLC–HTG exhibited ultra-low wear and excellent friction reduction performance under a maximum contact stress of 2.24 GPa. DLC films with designed double transition layers possess high interfacial bond strength and mechanical properties, providing the basis for high wear resistance. The establishment of a robust tribofilm and the confinment effect of HTG on wear debris dominate the achievement of ultra-low wear. This ultra-low wear sliding extends the service life of the lubrication system with the broad implications for mechanical engineering, transportation, and wind power generation. © 2023, The Authors. All rights reserved.

关键词： Wear of materials

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