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| 1 | Topological domain states and magnetoelectric properties in multiferroic nanostructures显示文摘Multiferroic nanostructures have been attracting tremendous attention over the past decade, due to their rich cross-coupling effects and prospective electronic applications. In particular, the emergence of some exotic phenomena in size-confined multiferroic systems, including topological domain states such as vortices, center domains, and skyrmion bubble domains, has opened a new avenue to a number of intriguing physical properties and functionalities, and thus underpins a wide range of applications in future nanoelectronic devices. It is also highly appreciated that nano-domain engineering provides a pathway to control the magnetoelectric properties, which is promising for future energy-efficient spintronic devices. In recent years, this field, still in its infancy, has witnessed a rapid development and a number of challenges too.In this article, we shall review the recent advances in the emergent domain-related exotic phenomena in multiferroic nanostructures. Specific attention is paid to the topological domain structures and related novel physical behaviors as well as the electric-field-driven magnetic switching via domain engineering. This review will end with a discussion of future challenges and potential directions. | Guo Tian Wenda Yang Deyang Chen Zhen Fan Zhipeng Hou Marin Alexe Xingsen Gao | 2019 | National Science Review2019，6，4： | 4 |
| 2 | Large-scale multiferroic complex oxide epitaxy with magnetically switched polarization enabled by solution processing显示文摘Complex oxides with tunable structures have many fascinating properties,though high-quality complex oxide epitaxy with precisely controlled composition is still out of reach.Here we have successfully developed solution-based single-crystalline epitaxy for multiferroic(1-x)BiTi(1-y)/2FeyMg(1-y)/2O3–(x)CaTiO3(BTFM–CTO)solid solution in large area,confirming its ferroelectricity at the atomic scale with strong spontaneous polarization.Careful compositional tuning leads to a bulk magnetization of 0.07±0.035μB/Fe at room temperature,enabling magnetically induced polarization switching exhibiting a large magnetoelectric coefficient of 2.7–3.0×10^-7 s/m.This work demonstrates the great potential of solution processing in large-scale complex oxide epitaxy and establishes novel room-temperature magnetoelectric coupling in epitaxial BTFM–CTO film,making it possible to explore a much wider space of composition,phase,and structure that can be easily scaled up for industrial applications. | Cong Liu Feng An Paria S.M.Gharavi Qinwen Lu Junkun Zha Chao Chen Liming Wang Xiaozhi Zhan Zedong Xu Yuan Zhang Ke Qu Junxiang Yao Yun Ou Zhiming Zhao Xiangli Zhong Dongwen Zhang Nagarajan Valanoor Lang Chen Tao Zhu Deyang Chen Xiaofang Zhai Peng Gao Tingting Jia Shuhong Xie Gaokuo Zhong Jiangyu Li | 2020 | National Science Review2020，7，1： | 2 |
| 3 | Comparative Study on Coastal Depth Inversion Based on Multi-source Remote Sensing Data显示文摘Coastal depth is an important research focus of coastal waters and is also a key factor in coastal environment. Dongluo Island in South China Sea was taken as a typical study area. The band ratio model was established by using measured points and three multispectral images of Landsat-8, SPOT-6(Systeme Probatoire d'Observation de la Terre, No.6) and WorldView-2. The band ratio model with the highest accuracy is selected for the depth inversion respectively. The results show that the accuracy of SPOT-6 image is the highest in the inversion of coastal depth. Meanwhile, analyzing the error of inversion from different depth ranges, the accuracy of the inversion is lower in the range of 0–5 m because of the influence of human activities. The inversion accuracy of 5–10 m is the highest, and the inversion error increases with the increase of water depth in the range of 5–20 m for the three kinds of satellite images. There is no linear relationship between the accuracy of remote sensing water depth inversion and spatial resolution of remote sensing data, and it is affected by performance and parameters of sensor. It is necessary to strengthen the research of remote sensor in order to further improve the accuracy of inversion. | LU Tianqi CHEN Shengbo TU Yuan YU Yan CAO Yijing JIANG Deyang | 2019 | Chinese Geographical Science2019，29，2： | 1 |
| 4 | Ferroelectricity in dopant-free HfO_(2) thin films prepared by pulsed laser deposition显示文摘As a high-k material,hafnium oxide(HfO_(2))has been used in gate dielectrics for decades.Since the discovery of polar phase in Si-doped HfO_(2) films,chemical doping has been widely demonstrated as an effective approach to stabilize the ferroelectric phase in HfO_(2) based thin films.However,the extra capping layer deposition,post-growth annealing and wake-up effect are usually required to arouse the ferroelectricity in HfO_(2) based thin films,resulting in the increase of complexity for sample synthesis and the impediment of device application.In this study,the ferroelectricity is observed in non-capped dopant-free HfO_(2) thin films prepared by pulsed laser deposition(PLD)without post-growth annealing.By adjusting the deposited temperature,oxygen pressure and thickness,the maximum polarization up to 14.7 m C/cm^(2) was obtained in 7.4 nm-thick film.The fraction of orthorhombic phase,concentrations of defects and size effects are considered as possible mechanisms for the influences of ferroelectric prop-erties.This study indicates that PLD is an effective technique to fabricate high-quality ferroelectric HfO_(2) thin films in the absence of chemical doping,capping layer deposition and post-growth annealing,which may boost the process of nonvolatile memory device application. | Yongjian Luo Zhenxun Tang Xiaozhe Yin Chao Chen Zhen Fan Minghui Qin Min Zeng Guofu Zhou Xingsen Gao Xubing Lu Jiyan Dai Deyang Chen Jun-Ming Liu | 2022 | Journal of Materiomics2022，8，2： | 1 |
| 5 | Enhanced ferroelectric polarization with less wake-up effect and improved endurance of Hf_(0.5)Zr_(0.5)O_(2)thin films by implementing W electrode显示文摘This paper reports the improvement of electrical,ferroelectric and endurance of Hf_(0.5)Zr_(0.5)O_(2)(HZO)thinfilm capacitors by implementing W electrode.The W/HZO/W capacitor shows excellent pristine 2 P_(r)values of 45.1 gC/cm^(2)at±6 V,which are much higher than those of TiN/HZO/W(34.4μC/cm^(2))and W/HZO/TiN(26.9μC/cm^(2))capacitors.Notably,the maximum initial 2 P_(r)value of W/HZO/W capacitor can reach as high as 57.9μC/cm^(2)at±7.5 V.These strong ferroelectric polarization effects are ascribed to the W electrode with a fairly low thermal expansion coefficient which provides a larger in-plane tensile strain compared with TiN electrode,allowing for enhancement of o-phase formation.Moreover,the W/HZO/W capacitor also exhibits higher endurance,smaller wake-up effect(10.1%)and superior fatigue properties up to 1.5×10^(10)cycles compared to the TiN/HZO/W and W/HZO/TiN capacitors.Such improvements of W/HZO/W capacitor are mainly due to the decreased leakage current by more than an order of magnitude compared to the W/HZO/TiN capacitor.These results demonstrate that capping electrode material plays an important role in the enhancement of o-phase formation,reduces oxygen vacancies,mitigates wake-up effect and improves reliability. | Dao Wang Yan Zhang Jiali Wang Chunlai Luo Ming Li Wentao Shuai Ruiqiang Tao Zhen Fan Deyang Chen Min Zeng Jiyan Y.Dai Xubing B.Lu J-M.Liu | 2022 | Journal of Materials Science & Technology2022，，9： | 1 |
| 6 | Effect of Oxidation Behavior on the Mechanical and Thermal Properties of Plasma Sprayed Tungsten Coatings显示文摘 | Deyang Hu Xuebin Zheng Yaran Niu Heng Ji Fali Chong Junling Chen | 2008 | Journal of Thermal Spray Technology2008，，3： | 1 |
| 7 | Research on Feature Extraction and Classification Method of Vibration Signal of Escalator Sprocket Bearing显示文摘In order to improve the accuracy of escalator sprocket bearing fault diagnosis,the problem of the feature extraction method of bearing vibration signal is addressed.In this paper,empirical mode is used to decompose the original signal,and the optimal modal component among the multiple modal components is obtained after the optimization decomposition is selected by the envelope spectrum method,and the multi-angle feature measure is introduced to extract the fault characteristic value.According to the vibration characteristics of the bearing vibration signal data,a bearing signal feature group that is more inclined to the fault feature category information is established,which avoids the absolute problem of extracting a single metric feature.The fuzzy C-means clustering algorithm is used to cluster the sample data with similar characteristics into the same cluster area,which effectively solves the problem that a single measurement analysis cannot characterize the complex internal characteristics ofthe bearing vibration signal. | Deyang Liu Yuhang Su Ningxiang Yang Jianxun Chen Jicheng Li | 2023 | 电气工程与自动化(中英文版)2023，11，1： | 0 |
| 8 | X-ray Emission from Zr, Mo, In and Pb Targets Bombarded by Slow Highly Charged Ar^(q+) (q=13, 14, 15, 16) Ions显示文摘Highly charged Arq+ (q=13, 14, 15, 16) ions were provided by a 14.5 GHz ECR ion source. Highly charged ions were extracted and m/q-selected (where m is the ion mass and q is the ion charge) by an analyzing magnet. The ion beams were charge state-selected again before entering into the target chamber by a 64°coaxial | Cai Xiaohong Yu Deyang Lu Rongchun Shao Caojie Lu Jun Ruan Fangfang Zhang Hongqiang Cui Ying Xu Xu Shao Jianxiong Ding Baowei Yang Zhihu Chen Ximeng | 2004 | 近代物理研究所和兰州重离子加速器实验室年报:英文版2004，，1： | 0 |
| 9 | Transfer Ionization Processes in Collisions between S^(q+) and H_2, He显示文摘Molecular H2 is extensively existing in interstellar plasma and play an important role in various charge exchange processes. Collisions between multiply charged S ions and H2, atomic H and He are key processes in investigation of the plasma related to Jupiter. The present work is focusing on the mechanism of collisions between Sq and H2, He. Although both the targets have two electrons, the outgoing channels are quite different, because molecular hydrogen can undergo dissociation and Coulombic explosion after charge transfer: | Wang Zhenglin Ma Xinwen Wei Baoren Chen Ximen Liu Huiping Yang Zhihu Yu Deyang Lu Rongchun Liu Zhaoyuan | 2004 | 近代物理研究所和兰州重离子加速器实验室年报:英文版2004，，1： | 0 |
| 10 | Bare Isotope Ions ^(13)C^(6+) Collide with Helium, Neon and Argon in ECRIS Energies显示文摘Multi-electron process in highly charged ions colliding with atoms has been an active area since 1980s. Ion-Atom collision study is important not only to understand many-body interaction dynamics, but also be demanded by application research such as controlled fusion which is based on plasma physics. Bare ions are | Yu Deyang Cai Xiaohong Lu Rongchun Shao Caojie Lu Jun Ruan Fangfang Zhang Hongqiang Cui Ying Xu Xu Shao Jianxiong Ding Baowei Yang Zhihu Chen Ximeng | 2004 | 近代物理研究所和兰州重离子加速器实验室年报:英文版2004，，1： | 0 |
| 11 | 在体细胞重编程早期瞬时激活的线粒体炫对Nanog的调控显示文摘体细胞重编程的各种机理已经有很多的报道,但是线粒体信号的不同信号和功能还不清楚。 | Zhongfu Ying Keshi Chen Lingjun Zheng Yi Wu Linpeng Li Rui Wang Qi Long Liang Yang Jingyi Guo Deyang Yao Yong Li Feixiang Bao Ge Xiang Jinglei Liu Qiaoying Huang Zhiming Wu Andrew Paul Hutchins Duanqing Pei 刘兴国 | 2017 | 科学新闻2017，19，4： | 0 |
| 12 | Energy Spectra of Ions Sputtered from Surface by 200 keV Ar2+显示文摘 | Ruan Fangfang Wu Yehong Du Fan Yu Deyang Chen Jing Wang Wei Zhang Mingwu Shao Caojie Lu Rongchun Cai Xiaohong | 2011 | IMP & HIRFL Annual Report2011，，1： | 0 |
| 13 | Production of Slow Highly Charged Ions Microbeams with Focusing Effect through a Tapered Glass Capillary显示文摘 | Xue Yingli Chen Jing Liu Junliang Wu Yehong Ruan Fangfang Wang Wei Yu Deyang Cai Xiaohong | 2011 | IMP & HIRFL Annual Report2011，，1： | 0 |
| 14 | Experimental search for high-performance ferroelectric tunnel junctions guided by machine learning显示文摘Ferroelectric tunnel junction(FTJ)has attracted considerable attention for its potential applications in nonvolatile memory and neuromorphic computing.However,the experimental exploration of FTJs with high ON/OFF ratios is a challenging task due to the vast search space comprising of ferroelectric and electrode materials,fabrication methods and conditions and so on.Here,machine learning(ML)is demonstrated to be an effective tool to guide the experimental search of FTJs with high ON/OFF ratios.A dataset consisting of 152 FTJ samples with nine features and one target attribute(i.e.,ON/OFF ratio)is established for ML modeling.Among various ML models,the gradient boosting classification model achieves the highest prediction accuracy.Combining the feature importance analysis based on this model with the association rule mining,it is extracted that the utilizations of{graphene/graphite(Gra)(top),LaNiO_(3)(LNO)(bottom)}and{Gra(top),Ca_(0.96)Ce_(0.04)MnO_(3)(CCMO)(bottom)}electrode pairs are likely to result in high ON/OFF ratios in FTJs.Moreover,two previously unexplored FTJs:Gra/BaTiO_(3)(BTO)/LNO and Gra/BTO/CCMO,are predicted to achieve ON/OFF ratios higher than 1000.Guided by the ML predictions,the Gra/BTO/LNO and Gra/BTO/CCMO FTJs are experimentally fabricated,which unsurprisingly exhibit≥1000 ON/OFF ratios(~8540 and~7890,respectively).This study demonstrates a new paradigm of developing high-performance FTJs by using ML. | Jingjing Rao Zhen Fan Qicheng Huang Yongjian Luo Xingmin Zhang Haizhong Guo Xiaobing Yan Guo Tian Deyang Chen Zhipeng Hou Minghui Qin Min Zeng Xubing Lu Guofu Zhou Xingsen Gao Jun-Ming Liu | 2022 | Journal of Advanced Dielectrics2022，12，3： | 0 |
| 15 | Emergent strain engineering of multiferroic BiFeO_(3) thin films显示文摘BiFeO_(3),a single-phase multiferroic material,possesses several polymorphs and exhibits a strong sensitivity to strain.Recently,emergent strain engineering in BiFeO_(3) thin films has attracted intense interest,which can overcome the confines of traditional strain engineering introduced through the mismatch between the film and substrate.In this review,we discuss emerging non-traditional strain engineering approaches to create new ground states and manipulate novel functionalities in multiferroic BiFeO_(3) thin films.Through fabricating freestanding thin films,inserting an interface layer or utilizing thermal expansion mismatch,continuously tunable strain can be imposed beyond substrate limitations.Nanostructured evolution and defect introduction are discussed as efficient routes to introduce strain,promising for the development of new nanodevices.Ultrafast optical excitation,growth conditions and chemical doping driven strain are summarized as well.We hope this review will arouse the readers’interest in this fascinating field. | Fei Sun Deyang Chen Xingsen Gao Jun-Ming Liu | 2021 | Journal of Materiomics2021，7，2： | 0 |
| 16 | Vacant Level Structure (VLS) Dependence in Isocharged Sequence Ions Collision with Helium显示文摘In highly charged ions(HCI)-atom collisions, many electrons are active and much more channels are opened, and the collision dynamics therefore is much more complicated. Because of the complexity originated from many active electrons which are involved in HCI and atoms collisions, the full quantum treatment is rather difficult, whereas the simple classical over-the-barrier models and semiempirical | Yu Deyang Cai Xiaohong Lu Rongchun Ruan Fangfang Shao Caojie Lu Jun Zhang Hongqiang Cui Ying Xu Xu Shao Jianxiong Ding Baowei Yang Zhihu Chen Ximeng Liu Zhaoyuan | 2005 | 近代物理研究所和兰州重离子加速器实验室年报:英文版2005，，1： | 0 |
| 17 | Multi-electron Processes in ^(13)C^(6+) Ions with Neon Collisions in Energy Region 4.15~11.08 keV/u显示文摘The cross-section ratios-ofσDE/σSC,σTE/σSC,σQE/σSC andσME/σSC as well as the relative ratios among reaction channels in double-electron active, triple-electron active and quadruple-electron active are measured in I3C6+-Ne collision in the energy region of 4. 15-11. 08 keV/u by employing position-sensitive and timeof -flight coincident techniques. The bare isotope 13C6+ ions were provided by 14. 5 GHz ECR ion source | Ruan Fangfang Cai Xiaohong Yu Deyang Lu Rongchun Shao CaoJie Lu Jun Cui Ying Shao Jianxiong Xu Xu Zhang Hongqiang Ding Baowei Yang Zhihu Chen Ximeng | 2005 | 近代物理研究所和兰州重离子加速器实验室年报:英文版2005，，1： | 0 |
| 18 | Controlled manipulation of conductive ferroelectric domain walls and nanoscale domains in BiFeO_(3) thin films显示文摘Recently,there is a surge of research interest in configurable ferroelectric conductive domain walls which have been considered as possible fundamental building blocks for future electronic devices.In this work,by using piezoresponse force microscopy and conductive atomic force microscopy,we demonstrated the controlled manipulation of various conductive domain walls in epitaxial BiFeO_(3) thin films,e.g.neutral domain walls(NDW)and charged domain walls(CDWs).More interestingly,a specific type of nanoscale domains was also identified,which are surrounded by highly conductive circular CWDs.Similar nano-scale domains can also be controlled created and erasured by applying local field via conductive probe,which allow nondestructive current readout of different domain states with a large on/off resistance ratio up to 102.The results indicate the potential to design and develop high-density non-volatile ferroelectric memories by utilizing these programable conductive nanoscale domain walls. | Dongfeng Zheng Guo Tian Yadong Wang Wenda Yang Luyong Zhang Zoufei Chen Zhen Fan Deyang Chen Zhipeng Hou Xingsen Gao Qiliang Li Jun-Ming Liu | 2022 | Journal of Materiomics2022，8，2： | 0 |
| 19 | Patterning of large area nanoscale domains in as-grown epitaxial ferroelectric PbTiO_(3)films显示文摘Effective tuning of nanoscale domain structures provides fundamental basis for controlling and engineering of various functionalities in ferroelectric materials.In this work,we demonstrate the precise patterning of nanoscopic domain structures in as-grown epitaxial PbTiO_(3)(PTO)films by merely introducing an ultrathin pre-patterned doping layer(e.g.,Fe-doped PTO).The doping layer can effectively reverse the interfacial built-in bias,consequent to a reversed initial polarization reorientation in the as-grown film,which makes it possible to transfer the nano-patterns in the doping layer into the domain structure of ferroelectric films.For instance,we have successfully fabricated large area ordered array of nanoscale cylindrical domains(downward polarization)embedded in the matrix domain with opposite polarization(upward polarization)in PTO film.These nanoscale cylinder domains also allow deterministic and reversible erasure and creation induced by biased tip scanning.The results provide an effective pathway for on-demand patterning of large area nanoscale domains in the as-grown films,which may find applications in a wide range of nanoelectronic devices. | Luyong Zhang Guo Tian Wenda Yang Dongfeng Zheng Chuanjie Lin Jianbiao Xian Yihang Guo Xingchen Zhang Xiuqin Qiu Lanping Zhang Zhen Fan Deyang Chen Zhipeng Hou Minghui Qin Jun-Ming Liu Xingsen Gao | 2023 | Journal of Materiomics2023，9，1： | 0 |
| 20 | Transfer lonization of Ar^(q+)-He, Ar^(q+)-Ne and Ar^(q+)-Ar Collisions显示文摘Charge-changing processes between highly charged ion and atom collisions have been the subject of considerable theoretical and experimental studies during the last decade. For larger numbers of active electrons and for higher projectile charges a full quantum mechanical treatment of the charge transfer process becomes difficult due to the large number of reaction channels involved, and the number of needed states becomes so large that the coupled channel treatments become impractical and further model descriptions are required. Up to now, the systematic study of the transfer ionization, multi-electron transfer and the dependences of these processes on the collision parameters are still rarely reported in the literature. In the present work the q dependence | Cai Xiaohong, Yu Deyang, Chen Xirneng, Lu Rongchun, Cao Zhurong, Yang Wei and Shao Caojie | 2003 | 近代物理研究所和兰州重离子加速器实验室年报:英文版2003，，1： | 0 |
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