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Chinese Science Bulletin 2002年第6期47卷 513-518页

作者： xu zhuo, zheng shuguang, yue zhenxing, feng yujun, jin an & yao xielectronic materials research laboratory (EMRL), xi’an jiaotong university, xi’an 710049, china Electronic materials research laboratory (EMRL) Xi’an Jiaotong University Xi’an China

The dielectric properties of Pb(Zn1/3Nb2/3)O3-BaTiO3-PbTiO3 relaxor ferroelectric ceramics near the rhombohedral and tetragonal phase boundary were investigated under hydrostatic pressure. It was found that hydrostatic pressure made their phase transition temperature Tc and the peak temperature Tm decreased, and the frequency dispersion and relaxor behavior enhanced. In these disorder systems of composite pervoskite structures, there appeared polar clusters or nanodomains. The unique physical characteristics, which made the relaxor behavior enhanced, is that the correlation length among these nanodo- mains decreases greatly with the pressure increasing.

关键词： hydrostatic pressure relaxor ferroelectric dielectric-temperature spectrum.

Effects of temperature on hydrostatic pressure-induced FE-AFE phase transition in PbLa(Zr,Sn,Ti)O_3 ceramics

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Chinese Science Bulletin 2001年第18期46卷 1574-1578页

作者： xu zhuo, feng yujun, zheng shuguang, jin An, WANG Fanglin & yao xielectronic materials research laboratory (EMRL), xi’an jiaotong university, xi’an 710049, china Electronic materials research laboratory (EMRL) Xi’an Jiaotong University Xi’an China

Hydrostatic pressure-induced ferroelectric-antiferroelectric (FE-AFE) phase transition and the pressure dependence of dielectric properties in La-doped Pb(Zr,Sn, Ti)O3 ceramics were researched; the effects of temperature on hydrostatic pressure-induced FE-AFE phase transition and dielectric properties of the samples were studied. It was found that the temperature made the FE-AFE phase transition pressure decrease, and there existed the behavior of dielectric frequency dispersion and phase transition diffusion in the dielectric-pressure spectrum. These phenomena were very useful to enrich and develop the knowledge on the diffused phase transition behavior of polycomponent relaxor ferroelectric.

关键词： hydrostatic pressure pressure-induced phase transition FE-AFE phase transition dielectric-pressure spectrum.

Biphase-to-monophase structure evolution of Na_(0.766+x)Li_(x)Ni_(0.33-x)Mn_(0.5)Fe_(0.1)Ti_(0.07)O_(2) toward ultradurable Na-ion batteries

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Carbon Energy 2024年第9期6卷 66-79页

作者： Mengting Liu Zhiwei Cheng xu Zhu Haojie Dong Tianran Yan Liang Zhang Lu zheng Hu-Rong yao xian-Zuo Wang Lianzheng Yu Bing xiao yao xiao Peng-Fei Wang State Key laboratory of Electrical Insulation and Power Equipment School of Electrical EngineeringCenter of Nanomaterials for Renewable EnergyXi'an Jiaotong UniversityXi'anShaanxiChina Jiangsu Key laboratory of Advanced Negative Carbon Technologies Institute of Functional Nano&Soft Materials(FUNSOM)Soochow UniversitySuzhouJiangsuChina Fujian Provincial Key laboratory of Quantum Manipulation and New Energy materials College of Physics and EnergyFujian Normal UniversityFuzhouFujianChina Wenzhou Key laboratory of Sodium-Ion Batteries Institute for Carbon NeutralizationWenzhou University Technology InnovationWenzhouZhejiangChina

Layered composite oxide materials with O3/P2 biphasic crystallographic structure typically demonstrate a combination of high capacities of the O3 phase and high operation voltages of the P2 ***,their practical applications are seriously obstructed by difficulties in thermodynamic phase regulation,complicated electrochemical phase transition,and unsatisfactory cycling ***,we propose an efficient structural evolution strategy from biphase to monophase of Na_(0.766+x)Li_(x)Ni_(0.33-x)Mn_(0.5)Fe_(0.1)Ti_(0.07)O_(2) through Li+*** role of Li+substitution not only simplifies the unfavorable phase transition by altering the local coordination of transition metal(TM)cations but also stabilizes the cathode–electrolyte interphase to prevent the degradation of TM cations during battery *** a result,the thermodynamically robust O_(3)-Na_(0.826)Li_(0.06)Ni_(0.27)Mn_(0.5)Fe_(0.1)Ti_(0.07)O_(2) cathode delivers a high capacity of 139.4 mAh g^(-1) at 0.1 C and shows prolonged cycling life at high rates,with capacity retention of 81.6%at 5 C over 500 *** work establishes a solid relationship between the thermodynamic structure evolution and electrochemistry of layered cathode materials,contributing to the development of long-life sodium-ion batteries.

关键词： electrochemistry Li+substitution Na-ion batteries O_(3)phase phase transition

FIELD INDUCED ANTIFERROELECTRIC-FERROELECTRIC PHASE TRANSITIONFOR LEAD ZIRCONATE TITANATE COMPOUNDS

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FIELD INDUCED ANTIFERROELECTRIC-FERROELECTRIC PHASE TRANSITI...

Properties of PbLa(Zr,Sn,Ti)O_(3) ceramics near ferroelectric-antiferroelectric phase boundary

第8届国际材联电子材料国际研讨会

作者： feng yujun yao xi xu zhuoElectronic materials research laboratory xi"an jiaotong university xi’an 710049 china

＜正＞ Phase transitions induced with electric field, pressure, and temperature in modified lead zirconate titanate compounds were investigated. Electric hysteretic, dielectric, and pyroelectric experimental techniques analyzed the characteristics of phase transition. The dependence of transformation conditions with chemical

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Chinese Science Bulletin 2006年第8期51卷 1000-1004页

作者： DAI Zhonghua yao xi xu zhuo feng yujun WANG Jun Electronic materials research laboratory Key Laboratory of the Ministry of Education Xi'an Jiaotong University Xi'an 710049 China

Two chemical compositions PbLa(Zr,Sn, Ti)O3 (PLZST) ceramics near the ferroelectric-anti- ferroelectric (FE/AFE) phase boundary were pre- pared by a traditional solid-state reaction process. The electrostriction properties under the electric field and the influence of hydrostatic pressure on the phase transition and the dielectric properties of these PLZST ceramics have been studied. Under the AC electric field, the strain of these two samples reached 0.21% and 0.13%, respectively. With increasing pressure, the FE/AFE phase transition temperature of the antiferroelectrics decreased and the antiferro- electric-paraelectric (AFE/PE) phase transition tem- perature increased, while the ferroelectric-paraelec- tric (FE/PE) phase transition temperature of the ferroelectrics decreased.

关键词：氧化物陶瓷流体静压相变反铁电体 PbLa(Zr,Sn, Ti)O3 PLZST FE/AFE

Co13O8—metalloxocubes:a new class of perovskite-like neutral clusters with cubic aromaticity

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National Science Review 2021年第1期8卷 89-97页

作者： Lijun Geng Mouyi Weng Cong-Qiao xu Hanyu Zhang Chaonan Cui Haiming Wu xin Chen Mingyu Hu Hai Lin Zhen-Dong Sun xi Wang Han-Shi Hu Jun Li Jiaxin zheng Zhixun Luo feng Pan Jiannian yao Beijing National laboratory for Molecular Sciences (BNLMS) State Key Laboratory for Structural Chemistry of Unstable and Stable Species Institute of Chemistry Chinese Academy of Sciences School of Physics Shandong University School of Advanced materials Peking University Shenzhen Graduate School Department of Chemistry Southern University of Science and Technology university of Chinese Academy of Sciences School of Physics and Electrical Engineering Kashi University College of Science Beijing Jiaotong University Department of Chemistry and Key laboratory of Organic Optoelectronics and Molecular Engineering of Ministry of Education Tsinghua University

Exploring stable clusters to understand structural evolution from atoms to macroscopic matter and to construct new materials is interesting yet challenging in chemistry. Utilizing our newly developed deep-ultraviolet laser ionization mass spectrometry technique, here we observe the reactions of neutral cobalt clusters with oxygen and find a very stable cluster species of Co13O8that dominates the mass distribution in the presence of a large flow rate of oxygen gas. The results of global-minimum structural search reveal a unique cubic structure and distinctive stability of the neutral Co13O8cluster that forms a new class of metal oxides that we named as ‘metalloxocubes’. Thermodynamics and kinetics calculations illustrate the structural evolution from icosahedral Co13to the metalloxocube Co13O8with decreased energy, enhanced stability and aromaticity. This class of neutral oxygen-passivated metal clusters may be an ideal candidate for genetic materials because of the cubic nature of the building blocks and the stability due to cubic aromaticity.

关键词： metalloxocube oxygen-passivated metal cluster cubic aromaticity cluster materials magnetic property

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基于复合修形技术的低雷达散射截面微带天线

电子技术应用 2024年第9期50卷 36-41页

作者：张甲楷郑昱陈剑徐伟宗耀西安交通大学电信学院陕西西安710049 西安电子工程研究所陕西西安710199

设计了一款基于复合修形技术的低雷达散射截面(Radar Cross Section,RCS)微带天线。通过在辐射贴片和金属底板同时采用修形技术,减少天线金属部分的面积,实现天线RCS减缩并且维持天线辐射特性。基于复合修形技术的微带天线相比传统未修... 详细信息

设计了一款基于复合修形技术的低雷达散射截面(Radar Cross Section,RCS)微带天线。通过在辐射贴片和金属底板同时采用修形技术,减少天线金属部分的面积,实现天线RCS减缩并且维持天线辐射特性。基于复合修形技术的微带天线相比传统未修形的微带天线在1~4 GHz频带内实现天线RCS减缩,最大RCS减缩量为20 dB。对设计的低RCS天线进行加工并测试,测试结果验证了仿真分析的正确性。

关键词：雷达散射截面修形微带天线辐射特性

Paired quasi-periodic pulsations of hard X-ray emission in a solar flare

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Science china(Physics,Mechanics & Astronomy) 2023年第5期66卷 195-206页

作者： Hai-Sheng Zhao Dong Li Shao-Lin xiong Yan-Qiu Zhang Yang Su Wei Chen Yi Zhao xiao-Bo Li Jia-Cong Liu Wen-xi Peng Rui Qiao xin-Qiao Li xiang-Yang Wen Li-Ming Song Shi-Jie zheng xin-Ying Song xiao-Yun Zhao yue Huang Shuang-Nan Zhang Shuo xiao Ce Cai zheng-Hua An Can Chen Gang Chen Wei Chen Yan-Qi Du Min Gao Ke Gong Dong-Ya Guo Zhi-Wei Guo Jian-Jian He Bin Li Chao Li Chao-Yang Li Gang Li Jian-Hui Li Lu Li Qing-xin Li Yan-Guo Li jing Liang xiao-Hua Liang jin-Yuan Liao xiao-jing Liu Ya-Qing Liu Qi Luo xiang Ma Bin Meng Ge Ou Dong-Li Shi jing-Yan Shi Gong-xing Sun xi-Lei Sun You-Li Tuo Chen-Wei Wang Hui Wang jin Wang jin-Zhou Wang Ping Wang Wen-Shuai Wang Hong Wu Sheng-Lun xie Yan-Bing xu Yu-Peng xu Wang-Chen xue Sheng Yang Min yao Jian-Ying Ye Qi-Bin Yi Chao-yue Zhang Da-Li Zhang Fan Zhang Fei Zhang Hong-Mei Zhang Kai Zhang Peng Zhang xiao-Lu Zhang Zhen Zhang Guo-Ying Zhao Shi-Yi Zhao Chao zheng xing Zhou yue Zhu Key laboratory for Particle Astrophysics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China Purple Mountain Observatory Chinese Academy of SciencesNanjing 210023China university of Chinese Academy of Sciences Beijing 100049China Department of Astronomy Beijing Normal UniversityBeijing 100875China School of Computing and Artificial Intelligence Southwest Jiaotong UniversityChengdu 611756China Physics and Space Science College China West Normal UniversityNanchong 637002China Key laboratory of Stellar and Interstellar Physics and Department of Physics Xiangtan UniversityXiangtan 411105China Institute of Astrophysics Central China Normal UniversityWuhan 430079China School of Physics Changchun University of Science and TechnologyChangchun 130022China College of Physics and Engineering Qufu Normal UniversityQufu 273165China College of Physics Sciences&Technology Hebei UniversityBaoding 071002China

We investigate high time resolution data obtained by the Gravitational wave high-energy Electromagnetic Counterpart All-sky Monitor(GECAM)during the flare event on 2022 April 21 at 01:52 *** subpeaks with durations of 4-6 s have been detected in the hard X-ray precursor phase,and the key feature is that they appear in pairs and seem like double-peak *** subpeaks are rarely observed in hard X-ray band and confirmed by the microwave obtained by Nobeyama Radio Polarimeters(NoRP)and Radio Solar Telescope Network(RSTN).While an exponential function can describe the continuum component of the time profile from the precursor to part of the impulsive *** periods of quasi-periodic pulsations(QPPs)are detected to be about 7.3 and 12.8 s for the precursor and impulsive phase,respectively,with at least 95%confidence *** paired QPPs are assumed to be double-peak QPPs and then the scenario of current loop coalescence model is found to be in good agreement with our *** precursor phase can be interpreted as the oscillating coalescence of two islands,while the impulsive phase can be interpreted as more islands to coalesce one by one to form larger islands.

关键词： solar flare QPPs loop coalescence circular-ribbon flare

CEPC Technical Design Report

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Radiation Detection Technology and Methods 2024年第1期8卷 I0003-I0016,1-1091页

作者： Waleed Abdallah Tiago Carlos Adorno de Freitas Konstantin Afanaciev Shakeel Ahmad Ijaz Ahmed xiaocong Ai Abid Aleem Wolfgang Altmannshofer Fabio Alves Weiming An Rui An Daniele Paolo Anderle Stefan Antusch Yasuo Arai Andrej Arbuzov Abdesslam Arhrib Mustafa Ashry Sha Bai Yu Bai Yang Bai Vipul Bairathi Csaba Balazs Philip Bambade Yong Ban Tripamo Bandyopadhyay Shou-Shan Bao Desmond P.Barber Ayse Bat Varvara Batozskaya Subash Chandra Behera Alexander Belyaev Michele Bertucci xiao-Jun Bi Yuanjie Bi Tianjian Bian Fabrizio Bianchi Thomas Biekotter Michela Biglietti Shalva Bilanishvili Deng Binglin Denis Bodrov Anton Bogomyagkov Serge Bondarenko Stewart Boogert Maarten Boonekamp Marcello Borri Angelo Bosotti Vincent Boudry Mohammed Boukidi Igor Boyko Ivanka Bozovic Giuseppe Bozzi Jean-Claude Brient Anastasiia Budzinskaya Masroor Bukhari Vladimir Bytev Giacomo Cacciapaglia Hua Cai Wenyong Cai Wujun Cai Yijian Cai Yizhou Cai Yuchen Cai Haiying Cai Huacheng Cai Lorenzo Calibbi Junsong Cang Guofu Cao Jianshe Cao Antoine Chance xuejun Chang yue Chang Zhe Chang xinyuan Chang Wei Chao Auttakit Chatrabhuti Yimin Che Yuzhi Che Bin Chen Danping Chen Fuqing Chen Fusan Chen Gang Chen Guoming Chen Hua-xing Chen Huirun Chen jinhui Chen Ji-Yuan Chen Kai Chen Mali Chen Mingjun Chen Mingshui Chen Ning Chen Shanhong Chen Shanzhen Chen Shao-Long Chen Shaomin Chen Shiqiang Chen Tianlu Chen Wei Chen xiang Chen xiaoyu Chen xin Chen xun Chen xurong Chen Ye Chen Ying Chen Yukai Chen Zelin Chen Zilin Chen Gang Chen Boping Chen Chunhui Chen Hok Chuen Cheng Huajie Cheng Shan Cheng Tongguang Cheng Yunlong Chi Pietro Chimenti Wen Han Chiu Guk Cho Ming-Chung Chu xiaotong Chu Ziliang Chu Guglielmo Coloretti Andreas Crivellin Hanhua Cui xiaohao Cui Zhaoyuan Cui Brunella D'Anzi Ling-Yun Dai xinchen Dai xuwen Dai Antonio De Maria Nicola De Filippis Christophe De La Taille Francesca De Mori Chiara De Sio Elisa Del Core Shuangxue Deng Wei-Tian Deng Zhi Deng Ziyan Deng Bhupal Dev Tang Dewen Biagio Di Micco Ran Ding Siqin Dingl Yadong Ding Haiyi Dong Jianin AGH university of Science and Technology Faculty of Physics and Applied Computer ScienceKrakow Anhui university HefeiAnhui Applied Physics Department Federal Urdu University of ArtsScience and TechnologyIslamabad Banaras Hindu university Institute of ScienceVaranasi Bandirma Onyedi Eylul university Bandirma Beihang university Beijing Beijing Computational Science research Center Beijing Beijing Conveyi LTD Beijing Beijing Glass research Institute Co. LtdBeijing Beijing Institute of Technology Beijing Beijing Normal university Beijing Brown university ProvidenceRI Budker Institute of Nuclear Physics Novosibirsk Cadi Ayyad university Laboratory of Fundamental and Applied PhysicsPolydisciplinary FacultyMarrakech Cairo university Giza Center for Theory and Computation National Tsing Hua UniversityHsinchu Central china Normal university WuhanHubei Central South university ChangshaHunan Centro de Fisica Teorica de Particulas Universidade Tecnica de LisboaLisboa Chengdu KaitengSifang Digital Radio&TV Equipment Co. LtdChengduSichuan china academy of engineering physics MianyangSichuan china building materials academy Beijing china Center of Advanced Science and Technology Beijing china Institute of Atomic Energy Beijing china Jiliang university HangzhouZhejiang china Nuclear Instrument CO. LTDBeijing china university of Geosciences Beijing china university of Geosciences WuhanHubei china university of Mining and Technology XuzhouJiangsu china West Normal university NanchongSichuan Chongqing university Department of PhysicsChongqing Chulalongkorn university Bangkok City university of Hong Kong Department of PhysicsHong Kong Cockcroft Institute Daresbury Cornell university IthacaNY CPPM(AMU/IPhU&CNRS/INP) Marseille Dalian Minzu university DalianLiaoning Dalian university of Technology Department of PhysicsDalian Deutsches Elektronen-Synchrotron DESY Hamburg Dzhelepov laboratory of Nuclear Problems of Joint Institute for Nuclear research(DLNP jinR) Dubna East china university Of Science And Technol

The Circular Electron Positron Collider(CEPC)is a large scientific project initiated and hosted by china,fostered through extensive collaboration with international *** complex comprises four accelerators:a 30 GeV Linac,a 1.1 GeV Damping Ring,a Booster capable of achieving energies up to 180 GeV,and a Collider operating at varying energy modes(Z,W,H,and tt).The Linac and Damping Ring are situated on the surface,while the subterranean Booster and Collider are housed in a 100 km circumference underground tunnel,strategically accommodating future expansion with provisions for a potential Super Proton Proton Collider(SPPC).The CEPC primarily serves as a Higgs *** its baseline design with synchrotron radiation(SR)power of 30 MW per beam,it can achieve a luminosity of 5×10^(34)cm^(-2)s^(-1)per interaction point(IP),resulting in an integrated luminosity of 13 ab^(-1)for two IPs over a decade,producing 2.6 million Higgs *** the SR power to 50 MW per beam expands the CEPC's capability to generate 4.3 million Higgs bosons,facilitating precise measurements of Higgs coupling at sub-percent levels,exceeding the precision expected from the HL-LHC by an order of *** Technical Design Report(TDR)follows the Preliminary Conceptual Design Report(Pre-CDR,2015)and the Conceptual Design Report(CDR,2018),comprehensively detailing the machine's layout,performance metrics,physical design and analysis,technical systems design,R&D and prototyping efforts,and associated civil engineering ***,it includes a cost estimate and a preliminary construction timeline,establishing a framework for forthcoming engineering design phase and site selection *** is anticipated to begin around 2027-2028,pending government approval,with an estimated duration of 8 *** commencement of experiments and data collection could potentially be initiated in the mid-2030s.

关键词： initiated exceeding precise

Phenotypic and functional comparison of rat enteric neural crest-derived cells during fetal and earlypostnatal stages

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Neural Regeneration research 2021年第11期16卷 2310-2315页

作者： Dong-Hao Tian Chuan-Hui Qin Wen-yao xu Wei-Kang Pan Yu-Ying Zhao Bai-Jun zheng xin-Lin Chen Yong Liu Ya Gao Hui Yu Department of Pediatric Surgery the Second Affiliated HospitalXi’an Jiaotong UniversityXi’anShaanxi ProvinceChina Department of Anorectal Suizhou Central HospitalHubei University of MedicineSuizhouHubei ProvinceChina Institute of Neurobiology Environment and Genes Related to Diseases Key Laboratory of Chinese Ministry of EducationXi’an Jiaotong UniversityXi’anShaanxi ProvinceChina

In our previous study,we showed that with increasing time in culture,the growth characteristics of enteric neural crest-derived cells(ENCCs)change,and that the proliferation,migration and neural differentiation potential of these cells in vitro notably ***,there are no studies on the developmental differences in these characteristics between fetal and early-postnatal stages in vitro or in *** this study,we isolated fetal(embryonic day 14.5)and postnatal(postnatal day 2)ENCCs from the intestines of *** ENCCs had greater maximum cross-sectional area of the neurospheres,stronger migration ability,and reduced apoptosis,compared with postnatal ***,fetal and postnatal ENCCs had a similar differentiation *** and postnatal ENCCs both survived after transplant into a rat model of Hirschsprung’s *** these rats with Hirschsprung’s disease,the number of ganglionic cells in the myenteric plexus was higher and the distal intestinal pressure change was greater in animals treated with fetal ENCCs compared with those treated with postnatal *** findings suggest that,compared with postnatal ENCCs,fetal ENCCs exhibit higher survival and proliferation and migration abilities,and are therefore a more appropriate seed cell for the treatment of Hirschsprung’s *** study was approved by the Animal Ethics Committee of the Second Affiliated Hospital of xi’an jiaotong university(approval No.2016086)on March 3,2016.

关键词： cell transplantation enteric nervous system enteric neural crest-derived cells Hirschsprung’s disease stem cells