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991.
ZHONG ZhiYong ZHANG HuaiWu TANG XiaoLi JING YuLan BAI FeiMing & LIU Shuang State Key Laboratory of Electronic Thin Films Integrated Devices University of Electronic Science Technology of China Chengdu China School of Optoelectronic Information 《中国科学:物理学 力学 天文学(英文版)》2011,(7)
The microstructure and magnetic properties of cobalt ferrite thin films deposited by the sputtering method on an Fe3O4 under-layer were investigated at different post-annealing temperatures.Results show that the Fe3O4 under-layer can accelerate the grain growth of cobalt ferrite films due to the phase transformation of the Fe3O4 under-layer at about 400°C-500°C.By introducing the Fe3O4 under-layer,cobalt ferrite nanocrystalline thin films with high coercivity can be obtained at lower post-annealing temperat... 相似文献
992.
ZHANG Jun JIN YaXin WANG HanBin YE Cong TONG WeiMing & WANG Hao Faculty of Physics Electronic Technology Hubei University Wuhan China 《中国科学:物理学 力学 天文学(英文版)》2011,(7)
Highly textured Ni nanowire arrays were fabricated into anodic aluminum oxide(AAO) templates by pulse DC electrodeposition.The applied voltage and pH value of electrolytes were found strongly affecting the microstructure and magnetic properties of Ni nanowire arrays.Low applied potential and pH value both prefer to form polycrystalline fcc Ni nanowires.Increasing the applied potential or pH value favors the Ni [220] texture and even eventually forms the [220] oriented single crystal Ni wires,while exorbitan... 相似文献
993.
ZHAO SuFen SUN Qian WANG RongMing & HAN YuNan Key Laboratory of Micro-nano Measurement-Manipulation Physics 《中国科学:物理学 力学 天文学(英文版)》2011,(7)
Magnetite nanoparticles with different sizes and different assemblies were synthesized via hydrothermal method.Micromagnetic simulation shows the magnetite nanocubes with different sizes have different energy states,which determines the assembly mode.Magnetite nanocubes with the side length of 30-60 nm tended to be dispersed while both nanochains and dispersed nanoparticles were found to grow for the nanocubes with the side length less than 30 nm,which can be explained in the fact that the above two assembl... 相似文献
994.
CHEN ShengBo & SONG JinHong College of Geoexploration Science Technology Jilin University Changchun China College of Resources Environment Jilin Agricultural University Changchun 《中国科学:物理学 力学 天文学(英文版)》2011,(8)
Atmospheric temperature-humidity profiles and land or sea surface temperature are coupled actions in the earth system process. Based on the numerical perturbation form of the atmospheric radiative transfer equation, a physics-based algorithm is pre- sented to integrate four pairs of MODIS measurements from the Terra and Aqua satellites to retrieve simultaneously atmospheric temperature-humidity profile, land-surface temperature and emissivity. Three pairs of MODIS data at two field sites in China, Luancheng... 相似文献
995.
Modelling of multi-bodies in close proximity under water waves——Fluid resonance in narrow gaps 总被引:1,自引:0,他引:1
LU Lin TENG Bin CHENG Liang SUN Liang & CHEN XiaoBo Center for Deepwater Engineering Dalian University of Technology Dalian China State Key Laboratory of Structural Analysis for Industrial Equipment State Key Laboratory of Coastal Offshore Engineering School of Civil Resource Engineering The University of Western Australia Crawly Australia Centre for Offshore Research... 《中国科学:物理学 力学 天文学(英文版)》2011,(1)
Viscous fluid model and potential flow model with and without artificial damping force(f=-μV,μ the damping coefficient and V the local averaging flow velocity) are employed in this work to investigate the phenomenon of fluid resonance in narrow gaps between multi-bodies in close proximity under water waves.The numerical results are compared with experimental data available in the literature.The comparison demonstrates that both the viscous fluid model and the potential flow model are able to predict the res... 相似文献
996.
CUI YuanQing & YANG Wei School of Aerospace Engineering Applied Mechanics Tongji University Shanghai China University Office Zhejiang University Hangzhou 《中国科学:物理学 力学 天文学(英文版)》2011,(5)
Experimental results indicate three regimes for cracking in a ferroelectric double cantilever beam (DCB) under combined electromechanical loading. In the loading, the maximum amplitude of the applied electric field reaches almost twice the coercive field of ferroelectrics. Thus, the model of small scale domain switching is not applicable any more, which is dictated only by the singular term of the crack tip field. In the DCB test, a large or global scale domain switching takes place instead, which is driven... 相似文献
997.
LONG LiuRong LI HongWei ZHOU Ping FAN Chao & YIN CaiLiu College of Physics Electronic Engineering Guangxi University for Nationalities Nanning China 《中国科学:物理学 力学 天文学(英文版)》2011,(3)
We present a scheme for multiparty-controlled teleportation of an arbitrary high-dimensional GHZ-class state with a d-dimensional (N+2)-particle GHZ state following some ideas from the teleportation (Chinese Physics B, 2007, 16: 2867). This scheme has the advantage of transmitting much fewer particles for controlled teleportation of an arbitrary multiparticle GHZ-class state. Moreover,we discuss the application of this scheme by using a nonmaximally entangled state as its quantum channel. 相似文献
998.
GUO KeTao LIANG MingChao XU HongYu & ZHU ChengBo School of Applied Science Jiangxi University of Science Technology Ganzhou China 《中国科学:物理学 力学 天文学(英文版)》2011,(3)
By using the concept of negativity, we investigate the thermal entanglement of a two-spin (1/2, 3/2) mixed-spin Heisenberg XX chain with an inhomogeneous external magnetic field. We obtain the analytical results of entanglement of this model. For the case of uniform magnetic field, we find that the critical temperature is higher than the results of the spin-1/2 chain and (1/2,1) mixed-spin chain. And by adjusting the nonuniform parameter b, one is able to obtain more entanglement at a higher temperature. 相似文献
999.
CANTWELL W J 《中国科学:物理学 力学 天文学(英文版)》2011,(6)
Structural impact tests were first presented to cover typical fibre metal laminates (FMLs) subjected a low velocity projectile impact,which produced the corresponding load-displacement traces and deformation/failure modes for the validation of numerical models.Finite element (FE) models were then developed to simulate the impact behaviour of FMLs tested.The aluminium (alloy grade 2024-0) layer was modelled as an isotropic elasto-plastic material up to the on-set of post failure stage,followed by shear failu... 相似文献
1000.
ZHAO ChunRan & YE Liu School of Physics & Materials Science Anhui University Hefei China School of Physics & Electronic Information Huaibei Normal University Huaibei 《中国科学:物理学 力学 天文学(英文版)》2011,(3)
A scheme is proposed for generating a multiphoton entangled cluster state among four modes. The scheme only uses Kerr medium, beam splitter and homodyne measurements on coherent light fields, which can be efficiently made in quantum optical laboratories. The photon in the signal mode is prepared in a superposition state of the vacuum state and one-photon state while the probe beam is initially set in a coherent state superposition. The strong probe mode interacts successively with multiple signal-mode photo... 相似文献