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An SANS Study of Decomposition Kinetics in Amorphous Cu_(12.5)Ni_(10)Zr_(41)Ti_(14)Be_(22.5)

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Journal of Materials Science & Technology 1998年第3期14卷 193-199页

作者： Junming LIU(national laboratory of {3. State {3., nanj.ng.university and Center for Advanced Studies in Scienceand Technology of {3., nanjing 210093. china) national laboratory of solid State {3. Nanjing University Center for Advanced Studies in Science and Technology of Microstructures Nanjing 210093 China

Phase decomposition in amorphous Cu12.5Ni10Zr411Ti14Be22.5 alloy as annealed in the super-cooled liquid range was studied by applying small angle neutron scattering (SANS). As annealed between 600 K and 700 K, the alloy was observed to decompose into two new amorphous phases,with the second phase precipitates embedded in the matrix of the first. Long time annealing of the alloy results in crystallization in addition to evolution of the decomposed *** kinetic diagram of the decomposition and crystallization for this alloy is given. The second phase precipitates have several nanometers in size and occupy a quite low volume fraction. The decomposition of the supercooled liquid in overall temperature range exhibits the features of spinodal reaction.

关键词： Be Zr SANS Ni Ti

Special magnetic phenomena in heavily doped La_(0.7-x)Dy_xSr_(0.3.MnO_3.system

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Science china(Physics,Mechanics & Astronomy) 2008年第1期51卷 90-97页

作者： LIU Ning 1,2 ,YAN GuoQing 1,3.,CAI ZhiRang 1 ,PI Li 2 ,ZHAng Bei 2 &TOng Wei 2 1 Department of Physics,Suzhou College,Suzhou 23.000,china 2 Structure Research laboratory,university of Science and Technology of{3.,Hefei 23.026,china 3.national laboratory of solid State {13.,Physics Department,nanj.ng.university,nanjing 210093.china Department of Physics Suzhou College Suzhou China Structure Research laboratory University of Science and Technology of China Hefei China national laboratory of solid State {3. Physics Department Nanjing University Nanjing China

The magnetism in heavily Dy doped La0.7-xDyxSr0.3.nO3.0.40≤x≤0.70)system is studied in this *** M-T relation seems to be complicated with the increase of *** sample with x=0.40,AFM behavior exists at T≤TN and M-T curves under zero field cooling(ZFC)and field cooling(FC)exhibit typical behavior of spincluster glass state above *** the sample with x=0.50,the M-T curve under ZFC exhibits a valley at a low temperature while the M-T curve under FC exhibits the negative magnetization below *** samples with x=0.60,0.70,their ZFC M-T curves are similar to that of x=0.50,but the FC M-T curves do not exhibit negative values any *** the peculiar phenomena above are well explained by Néel double-lattice model combined with M-H relation at typical *** molecular field theory fits well the negative magnetization for x=0.50.

关键词： heavily doped special magnetic phenomena double-lattice model

Surface configurations during annealing of sputter-deposited NiTi thin films

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Chinese Science Bulletin 1997年第23期42卷 2019-2020页

作者： GOng Fengfei, JIAng Enyong, SHEN Huimin and WAng Yening1. Department of Applied Physics, Tianjin university, Tianjin 3.0072 The national laboratory of {3. State microstructures, nanj.ng.university, nanjing 210008 Center for Advanced Studies in Science and Technology of microstructures, nanjing 210093. china 2. Department of Physics, Tianjin university, Tianjin 3.0072, china 3. national laboratory of {3. State microstructures, nanj.ng.university, nanjing 210008, Center for Advanced Studies in Science and Technology of microstructures, nanjing 210093. china. Department of Applied Physics Tianjin University Tianjin The national laboratory of solid State {3. Nanjing University Nanjing Center for Advanced Studies in Science and Technology of microstructures Nanjing China Department of Physics Tianjin University Tianjin China national laboratory of solid State {3. Nanjing University Nanjing

SPUTTER-DEPOSITED NiTi thin films are becoming more and more important because of their po-tential applications to the intelligent thin-film systems. The as-deposited NiTi thin films pre-pared by magnetron sputtering are generally amorphous. Because the amorphous NiTi thinfilms cannot show shape memory effect, they should be crystallized under appropriate anneal-

关键词： NiTi Surface configurations during annealing of sputter-deposited NiTi thin films

Subsidence control and farmland conservation by solid backfilling mining technology

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中国有色金属学会会刊：英文版 2011年第S3期21卷 665-669页

作者： GUO Guang-li1, 2, FEng Wen-kai3. ZHA Jian-feng1, 2, 3. LIU Yuan-xu1, 2, WAng Qiang1, 2 1. Key laboratory for Land Environment and Disaster Monitoring of the State Bureau of Surveying and Mapping, china university of Mining and Technology, Xuzhou 221116, china 2. Jiangsu Key laboratory of Resources and Environmental Information Engineering, china university of Mining and Technology, Xuzhou 221116, china 3. State Key laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu university of Technology, Chengdu 610059, china Key laboratory for Land Environment and Disaster Monitoring of the State Bureau of Surveying and Mapping China University of Mining and Technology Xuzhou 221116 China Jiangsu Key laboratory of Resources and Environmental Information Engineering China University of Mining and Technology Xuzhou 221116 China State Key laboratory of Geohazard Prevention and Geoenvironment Protection Chengdu University of Technology Chengdu 610059 China

solid backfilling mining technology, which decreases the height of fissure zone and caving zone, and alleviates the subsidence, is a new technology for farmland conservation. Based on the situation analysis of farmland destruction in mining area, three ways for farmland protection were proposed. In order to improve the feasibility of this technology, the limited filling materials should be used to increase resources recovery ratio, and then the surplus materials could be backfilled into goaf. An index, namely farmland conservation ability, was put forward to optimize the ways for farmland conservation. At last, the Wanbei coal mine was taken as a case for farmland conservation. It was shown that 3.40 t dull coal was substituted and 52 hm2 farmland was conserved by solid backfilling mining in this coal mine.

关键词： solid backfilling farmland conservation mining subsidence equivalent mining height

Mining subsidence control by solid backfilling under buildings

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中国有色金属学会会刊：英文版 2011年第S3期21卷 670-674页

作者： ZHA Jian-feng1, 2, 3. GUO Guang-li1, 2, FEng Wen-kai3. WAng Qiang1, 2 1. Key laboratory for Land Environment and Disaster Monitoring of the State Bureau of Surveying and Mapping, china university of Mining and Technology, Xuzhou 221116, china 2. Jiangsu Key laboratory of Resources and Environmental Information Engineering, china university of Mining and Technology, Xuzhou 221116, china 3. State Key laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu university of Technology, Chengdu 610059, china Key laboratory for Land Environment and Disaster Monitoring of the State Bureau of Surveying and Mapping China University of Mining and Technology Xuzhou 221116 China Jiangsu Key laboratory of Resources and Environmental Information Engineering China University of Mining and Technology Xuzhou 221116 China State Key laboratory of Geohazard Prevention and Geoenvironment Protection Chengdu University of Technology Chengdu 610059 China

solid backfilling mining can reduce the buildings' damage caused by mining greatly. The reduction of subsidence value, the slow advancing speed and the subsidence caused by backfilling body compaction are the main reasons that solid backfilling mining velocity decreases significantly. Based on the research of mechanism, some principles on subsidence control of solid backfilling mining under buildings were proposed. The equivalent mining height was designed according to the fortification criteria of buildings and their attachment structures, which enables the ground movement and deformation caused by mining to be less than the corresponding fortification criteria.

关键词： solid backfilling mining subsidence control mining under buildings

Preparation and Characterization of Nanocomposite MgFe_2O_4/SiO_2

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Journal of Wuhan university of Technology(Materials Science) 2009年第3期24卷 354-358页

作者：徐莉 College of Science Nanjing Forestry University

Nanocomposites MgFe2O4/SiO2 were successfully synthesized by the sol-gel method in the presence of N, N-dimethylformamide （DMF）. The formation of pure MgFe2O4 was confirmed by powder X-ray diffraction （XRD） and electron diffraction. The structural evolution of MgFe2O4 nanocrystals was followed by powder X-ray diffraction and IR absorption spectroscopy. The formation of spinel structure of MgFe2O4 started at 800 ℃, and completed at 900 ℃, The transmission electron microscopy （TEM） measurements suggest that the particle sizes increase with the increasing annealing temperature, and the mean particle sizes of the spherical samples annealed at 800 ℃, 900 ℃ and 1 050 ℃ are ca. 3.nm, 8 nm and 11 nm, respectively. Magnetization measurements at room temperature and 78 K indicate supemaramagnetic nature of these MgFe2O4 nanocrvstals.

关键词： nanocomposite sol-gel magnesium ferrite magnetic property

Study on the Relationship between Lamellar Spacing and Growth Rate inthe Regular Eutectic Growthby Monte-Carlo Simulation

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Journal of Materials Science & Technology 2002年第4期18卷 322-324页

作者： Weimin WAng, Junming LIU and Zhiguo LIUlaboratory of {3. State microstructures,{3., nanjing 210093. china Lab. of solid State microstructures Nanjing Univ. Nanjing 210093 China

A modified Monte-Carlo(MC) method to simulate the regular growth of binary eutectic alloys is presented. It is found that the growth rate has a linear dependence on the chemical potential difference between the solid and liquid; the relation between the lamellar spacing A and growth rate R accords well with the prediction of Jackson-Hunt(JH) theory unless the growth rate is very low.

关键词： Eutectic Monte-Carlo simulation Growth

Polymer-assisted nanoparticulate contrast-enhancing materials

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Science china Chemistry 2010年第3期53卷 479-486页

作者： DIng Yin1,3.HU Yong2,WU Wei1 & JIAng XiQun1 1{3. of Mesoscopic Chemistry and Department of Polymer Science and Engineering,College of Chemistry & Chemical Engineering,nanj.ng.university,nanjing 210093.{3. 2national {3. of solid State Microstructure,Department of Material Science and Engineering,nanj.ng.university,nanjing 210093.{3. 3.ey {3. of Analytical Chemistry for Life Science,Ministry of Education,School of Chemistry and Chemical Engineering,nanj.ng.university,nanjing 210093.{3. laboratory of Mesoscopic Chemistry and Department of Polymer Science and Engineering College of Chemistry & Chemical Engineering Nanjing University Nanjing China Key laboratory of Analytical Chemistry for Life Science Ministry of Education School of Chemistry and Chemical Engineering Nanjing University Nanjing China national laboratory of solid State Microstructure Department of Material Science and Engineering Nanjing University Nanjing China

The application of nanotechnology in medicine research has significant potential in modern biomedical research,disease diagnosis and *** fluorophore-based detection techniques have been widely used as imaging and signal transduction tools for the detection of trace levels of *** photosensitivity of the fluorophores,however,limits their application in such complex environments as living bio-systems where degradation or photobleaching *** nanoparticles have unique and stable optical,electrical,magnetic and catalytic properties because of their various shapes,sizes and *** potential of the nanoparticles as novel imaging agents has been studied as a possible solution to this *** modification of inorganic nanoparticles could enhance their biostability in physiological conditions and ability of targeting bioactive molecules.

关键词： contrast agent cell image gold nanoparticles iron oxide nanoparticles carbon nanotubes polymeric-inorganic hybrid nanoparticles

Interfacial Tunnel-type GMR in Granular PerovskiteLa_(1-x)Sr_xMnO_3

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Journal of Materials Science & Technology 1999年第4期15卷 373-374页

作者： Ning ZHAng and Minyu ZEng(Department of Physics, {3.ing Normal university, {3.ing 210097,{3.)WeiPing DIng, Wei ZHOng and Youwei DU(national {13. of solid State microstructures, nanj.ng.university, {3.ing 210093.{3.)To whom correspondence sh Department of Physics Nanjing Normal University Nanjing 210097 China national laboratory of solid State {3. Nanjing University Nanjing 210093 China

The spin-dependent intedecial tunneling and the corresponding tunnef-type magnetoresistance (TMR) have been observed in granular perovskite La_(1-x)Sr_xMnO_3.with x from 0.05 to *** shows that the intedecial tunneling originates from the magnetic difference between thegrain core and the sudece, and the TMR stems from the field-induced change of magnetic orderin the interface.

关键词： Sr x)SrxMnO3 MnO GMR Interfacial Tunnel-type GMR in Granular PerovskiteLa type