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Chinese Science Bulletin 1995年第15期40卷 1257-1262页

作者：张延忠 Shanghai Iron and Steel Research Institute. Shanghai 200940 China

Typical nanocrystalline Fe73.5Cu1Nb3Si13.5B9 and Fe73.1Cu1.2Nb12.5Si12.5B10 alloys containmore expensive element Nb and their as-quenched amorphous ribbons are brittle. Partlyreplacing Nb by much cheaper V, we have de... 详细信息

关键词： nanocrystalline alloy core loss relative initial susceptibility superparamagnetism.

New nanocrystalline Fe_(69.4)Cu_(0.6)Cr_(3.2)V_(0.8)Si_(14)B_(12) soft magnetic alloy

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Chinese Science Bulletin 1995年第11期40卷 905-911页

作者：张延忠杨燮龙 Shanghai Iron & Steel Research Institute Shanghai 200940 China East China Normal University Shanghai 200062 China

Early-developed nanocrystalline Fe73.5Cu1.0Nb3Si13.5B9 and Fe73.1Cu1.2Nb3.2Si12.5B10 alloyshave shown superior synthetical soft magnetic properties; however, they contain the ex-pensive element Nb and their amorphous ribbons are brittler. In order to make cheaperFe-based nanocrystalline alloys, the authors have made a nanocrystalline Fe69.4Cu0.6Cr3.2V0.8-Si14B12 alloy by replacing Nb by much cheaper Cr and V. Its amorphous ribbon has

关键词： nanocrystalline alloy relative effective permeability core loss Curie temperature.

Development of massively parallel electron beam direct write lithography using active-matrix nanocrystalline-silicon electron emitter arrays

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Microsystems & Nanoengineering 2015年第1期1卷 44-51页

作者： Masayoshi Esashi Akira Kojima Naokatsu Ikegami Hiroshi Miyaguchi Nobuyoshi Koshida World Premier International Research Center Advanced Institute for Materials Research(WPI-AIMR) Tohoku University519-1176 Aramaki-Aza-AobaAoba-kuSendaiMiyagi 980-0845Japan Micro System Integration Center Tohoku University519-1176 Aramaki-Aza-AobaAoba-kuSendaiMiyagi 980-0845Japan Department of Electrical and Electronic Engineering Tokyo University of Agriculture&Technology2-24-16 Naka-choKoganei-shiTokyo 184-8588Japan

Nanoscale lithographic technologies have been intensively studied for the development of the next generation of semiconductor manufacturing practices.While mask-less/direct-write electron beam(EB)lithography methods serve as a candidate for the upcoming 10-nm node approaches and beyond,it remains difficult to achieve an appropriate level of throughput.Several innovative features of the multiple EB system that involve the use of a thermionic source have been proposed.However,a blanking array mechanism is required for the individual control of multiple beamlets whereby each beamlet is deflected onto a blanking object or passed through an array.This paper reviews the recent developments of our application studies on the development of a high-speed massively parallel electron beam direct write(MPEBDW)lithography.The emitter array used in our study includes nanocrystalline-Si(nc-Si)ballistic electron emitters.Electrons are drifted via multiple tunnelling cascade transport and are emitted as hot electrons.The transport mechanism allows one to quickly turn electron beamlets on or off.The emitter array is a micro-electro-mechanical system(MEMS)that is hetero-integrated with a separately fabricated active-matrix-driving complementary metal-oxide semiconductor(CMOS)large-scale integration(LSI)system that controls each emitter individually.The basic function of the LSI was confirmed to receive external writing bitmap data and generate driving signals for turning beamlets on or off.Each emitted beamlet(10×10μm^(2))is converged to 10×10 nm^(2) on a target via the reduction electron optic system under development.This paper presents an overview of the system and characteristic evaluations of the nc-Si emitter array.We examine beamlets and their electron emission characteristics via a 1:1 exposure test.

关键词： direct write lithography electron beam lithography electron emitter array multiple electron beams nanocrystalline Si

Preparation of nanocrystalline Metal-carbides by Mechanical Alloying

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Chinese Science Bulletin 1994年第14期39卷 1166-1170页

作者：柳林李兵丁星兆马学鸣戚震中董远达 Institute of Solid State Physics Academia Sinica Hefei 230031 PRC

Nowadays, most of nanocrystalline materials (NM) are fabricated from the gas phase by an evaporation/condensation process. However, this process is difficult to scale up. Recently, mechanical alloying has become an alternative route to produce NM of commercial significance. This method, through low temperature solid state reaction, can produce novel phases and structures of alloys which would not be obtained by any other method, and hence, has attracted great attention.

关键词： mechanical alloying metal-carbides nanocrystalline materials.

Characteristics of distortion of bond length in glassy carbon nanocrystalline by Raman spectroscopy

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Chinese Science Bulletin 1996年第11期41卷 963-966页

作者：李向山华中王文宇高忠民张桂琴 Department of Material Science Jilin University Changehun 130023. China

Bond length (or lattice) distortion, crystallite size and crystal boundary structure areall important aspects in the research of nanocrystalline structure. A number of interestingworks have been published concerning the effect of lattice distortion on the properties ofnanocrystalline, but the studies of the characteristics of bond length or lattice distortionof nanocrystalline have not been specially reported. In this note, a new method analyzingbond length distortion in nanocrystalline by Raman spectroscopy is given on the basis

关键词： glassy carbon nanocrystalline transitional layers of distorted bond length expansion rate of bond length Raman spectroscopy.

Preparation of nanocrystalline Rare Earth Mixed Oxides DyFe_x Co_(1- x)O_(3-δ) and Its Conductivity

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Journal of Rare Earths 2002年第5期20卷 471-474页

作者：任引哲王建英刘二保 Shanxi Normal Univ Dept Chem Linfen 041004 Peoples R China

nanocrystalline rare earth mixed oxides DyFe x Co 1- x O 3- δ were prepared by sol gel method and characterized by X ray diffraction (XRD), thermogravimetric analysis (TG DTA) and scanning electron microscope (SEM). The results show that DyFe x Co 1- x O 3- δ has the structure of perovskite type at 800 ℃ for 2 h calcination. The conductivity of the materials at different temperature was measured by four probe instrumentation and two pole method. The results show that the conductivity of mixed oxides DyFe x Co 1- x O 3- δ is higher than those of un mixed oxides DyFeO 3 and DyCoO 3 and the conductivity is the best at x =0.8 in the matter of DyFe x Co 1- x O 3- δ . The conductivity of these materials always increases with the temperature rising and there is an apparent change between 600 and 800 ℃. However, the spinodals are different with different ration of Fe 3+ and Co 3+ . This kind of oxide is a conductive pottery material.

关键词： rare earths sol gel method DyFe x Co 1- x O 3- δ nanocrystalline conductivity

PREPARTION　OF　QUANTUM　SIZED　CdSe　nanocrystalline　FILMS　BY　CHEMICAL　SOLUTION　DEPOSITION

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Chinese Chemical Letters 1996年第4期7卷 391-392页

作者： Xiao Wen ZHOU Xu Rui XIAO Xue Ping LI(The Center of Photoelectrochemistry, Institute of Pholographic Chemistry. Acdemia Sinica. Deijing 100101) Center of Photoelectrochemistry Institute of Photographic Chemistry Acdemia Sinica Beijing 100101

Chemical solution deposited CdSe particulate film possess nanocrystalline structure and exhibit quantum size effects. By changing the temperature of chemical deposition and subsequent annealing, CdSe particulate films... 详细信息

关键词： CdSe nanocrystalline SIZED QUANTUM CHEMICAL BY

Anomalous dielectric behavior in nanocrystalline γ-Fe_2O_3

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Chinese Science Bulletin 1999年第2期44卷 186-189页

作者： YE Xisheng , SHA Jian , CHEN Bin , JIAO Zhengkuan ZHANG LideDepartment of Physics, Zhejiang University, Hangzhou 310027, China Northwest Institute of Nuclear Technology, Xi’ an 710024, China Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080, China Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China Department of Physics Zhejiang University Hangzhou China Northwst Institute of Nuclear Technology Xi’an China Institute of Theoretical Physics Chinese Academy of Sciences Beijing China Institute of Solid State Physics Chinese Academy of Sciences Hefie China

The measurements of electric capacities and dielectric loss angles for nanocrystalline yFe2O3 under air and vacuum atmospheres have been conducted by using ac LRC method, and the conductivity and the polarization relaxation time have also been calculated from the frequency spectra of real and imaginary parts of the dielectric constants. The anomalous dielectric behavior implies the existence of two kinds of polarization mechanisms with different relaxation times, which are caused by the defects and the dangling bonds in the interfaces, respectively. The experimental and calculated results indicated that the polarization loss and the conductance loss are dominant in air atmosphere and vacuum, respectively.

关键词： nanocrystalline γ-Fe2O3 dielectric behavior polarization mechanism.

Strain rate sensitivity and activation volume of electrodeposited nanocrystalline Ni and Ni-Co alloys

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Rare Metals 2007年第S1期26卷 134-138页

作者： LIAN Jianshe,GU Changdong,LI Guangyu,and JIANG Qing Key Laboratory of Automobile Materials,Ministry of Education,Department of Materials Science and Engineering,Jilin University,Changchun 130025,China Jilin Univ Dept Mat Sci & Engn Minist Educ Key Lab Automobile Mat Changchun 130025 Peoples R China

Tensile deformation behaviors of the electrodeposited 40 nm grain sized Ni,25 nm Ni-1.7 wt.%Co,and 13 nm Ni-8.6 wt.%Co alloys at various strain rates and room temperature were reviewed with emphasis on strain rate sensitivity and activation volume,respectively.It is found that the strain rate sensitivity and activation volume were strongly grain size dependent.An analytic model based on the bow out of a single dislocation well predicted the relationship between the strain rate sensitivity and the activation volumes for these nanocrystaline metals.

关键词： nanocrystalline mechanical properties strain rate sensitivity activation volume Ni-Co alloy Ni

Giant magneto-impedance effects in nanocrystalline soft magnetic alloy ribbons

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Chinese Science Bulletin 1997年第12期42卷 1049-1052页

作者： Ku, WJ Ge, FD Yan, G Wang, XY Zhu, J Central Iron and Steel Research Institute Beijing Department of Materials Science and Engineering Tsinghua University Beijing China

SINCE the discovery of the giant magneto-impedance (GMI) effects in amorphous wire (or rib-bon) of CoFeSiB and nanocrystalline wire (or film) of FeCuNbSiB, it has attracted greatattention due to its promising potential applications in industry. Amorphous (and nanocrys-talline) soft magnetic alloys have very large magnetic permeability, when an ac driving currentand an external magnetic field (EMF) are applied, the EMF will damp the magnetic fluxchange caused by the ac driving current, thus the magnetic permeability will decrease; as a re-

关键词： giant magneto-impedance effects (GMI) magnetic permeability penetration depth nanocrystalline soft magnetic alloy ribbon.