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369 Result(s)

within **-**a Ding Remove this filter Characterization and Evaluation of Materials Remove this filter Condensed Matter Physics Remove this filter

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  1. No Access

    Article

    Study of History Effect of Vortex Matter by AC Susceptibility

    We have observed numerically the history effect, based on bulk flux pinning framework, in the susceptibility χ(T) (acs), experimentally measured in different samples. The dependencies of history effect in χ(T) on...

    X. F. Wu, H. Luo, S. Y. Ding, Y. H. Zhang, T. Yang, Y. Liu… in Journal of Superconductivity (2001)

  2. No Access

    Article

    Effect of Oxygen-Deficiency of CuO2 Plane on the Structure, Magnetism, and Transport Properties

    Polycrystalline samples La2 − x Sr x CuO4 − δ (0.06 ≤ x ≤ 1.0) and the corresponding vacuum annealed samples were investigated systematically by means of XRD, infrared (IR) spect...

    Xu Gaojie, Pu Qirong, Zhang Zengming, Ding Zejun in Journal of Superconductivity (2001)

  3. No Access

    Article

    The Numerical Study of Influence of Flux Creep on AC Losses in Superconductors

    Numerical simulation of AC losses in superconductors with gaint flux creep was carried out based on the collective creep model of the vortex glass. Influence of physical parameters, including frequency (f) and th...

    H. Luo, S. Y. Ding, X. F. Wu, Z. H. Wang, H. M. Luo in Journal of Superconductivity (2001)

  4. No Access

    Article

    Formation of CNx thin films by reactive pulsed laser deposition assisted by electron cyclotron resonance microwave discharge

    Amorphous carbon nitride thin films were synthesized by pulsed laser deposition combined with electron cyclotron resonance (ECR) microwave discharge in nitrogen gas. The ECR discharge supplies active nitrogen ...

    W. Shi, J.D. Wu, J. Sun, H. Ling, Z.F. Ying, X.M. Ding, Z.Y. Zhou… in Applied Physics A (2001)

  5. No Access

    Article

    Map** the Spin-Injection Probability on the Atomic Scale

    A spin-polarized electron current is injected into the GaAs(110) surface at 100 K by using a polycrystalline ferromagnetic Ni scanning tunneling microscopy (STM) tip. The injected electrons recombine to the va...

    D. W. Bullock, V. P. LaBella, Z. Ding, P. M. Thibado in Journal of Superconductivity (2002)

  6. No Access

    Article

    Magnetotransport properties of a layered La1.6Ca1.4Mn2O7 polycrystal

    Magnetotransport properties of a two-layered La1.6Ca1.4Mn2O7 polycrystal have been examined as a function of temperature and applied field. It was found that the magnetic transition temperature (Tc) is about 70 K...

    T.-J. Zhou, Z. Yu, S.Y. Ding, L. Qiu, Y.W. Du in Applied Physics A (2002)

  7. No Access

    Article

    Lower limit for single-wall carbon nanotube diameters from hydrocarbons and fullerenes

    A theoretical model for the growth of single-wall carbon nanotubes produced by metal-catalyzed decomposition of hydrocarbons and fullerenes is presented. The growth process is treated as a thermodynamic equili...

    H. Kanzow, P. Bernier, A. Ding in Applied Physics A (2002)

  8. No Access

    Article

    Phonon Vibration and Conduction of La2 − xSrxCuO4 − δ and La1.85 − xSr0.15 + xCu1 − xCoxO4 − δ

    Polycrystalline samples La2 − x Sr x CuO4 − δ (0.06 ≤ x ≤ 0.5) and La1.85 − x Sr0.15 + x Cu1 − x Co x O4 − δ (0 ≤ x ≤ 1) were synthesized by a c...

    Xu Gaojie, Pu Qirong, Zhang Zenming, Ding Zejun in Journal of Superconductivity (2002)

  9. No Access

    Article

    Flat layered structure and improved photoluminescence emission from porous silicon microcavities formed by pulsed anodic etching

    Single-mode, highly directional and stable photoluminescence (PL) emission has been achieved from porous silicon microcavities (PSMs) fabricated by pulsed electrochemical etching. The full width at half maximu...

    Z.H. **ong, L.S. Liao, X.M. Ding, S.H. Xu, Y. Liu, L.L. Gu, F.G. Tao… in Applied Physics A (2002)

  10. No Access

    Article

    Laser-induced back-side wet etching of fused silica with an aqueous solution containing organic molecules

    The laser-induced back-side wet etching of fused silica with aqueous solutions of pyranine (8-hydroxy-1,3,6-pyrenetrisulfonic acid trisodium salt) is reported. KrF and XeF excimer lasers were employed as light...

    X. Ding, Y. Yasui, Y. Kawaguchi, H. Niino, A. Yabe in Applied Physics A (2002)

  11. No Access

    Article

    Magnetic properties and magnetic entropy change of amorphous and crystalline GdNiAl ribbons

    The structure and magnetic properties of amorphous melt-spun and subsequently crystallized GdNiAl ribbons were investigated. An amorphous phase was formed after the quenching process by melt spinning with a co...

    L. Si, J. Ding, Y. Li, B. Yao, H. Tan in Applied Physics A (2002)

  12. No Access

    Article

    Preparation and characterisation of compositionally graded BaxSr1-xTiO3 thin films

    BaxSr1-xTiO3 thin films with a compositional gradient of x=0.3 to 1 (in 0.1 mole fraction increments) were fabricated on Pt/Ti/SiO2/Si substrates using a modified sol–gel technique. The graded film crystallised i...

    S.U. Adikary, A.L. Ding, H.L.W. Chan in Applied Physics A (2002)

  13. No Access

    Article

    Laser-induced high-quality etching of fused silica using a novel aqueous medium

    Laser-induced backside wet etching of fused-silica plates using an aqueous solution of naphthalene-1,3,6-trisulfonic acid trisodium salt (Np(SO3Na)3) is reported. A KrF excimer laser was employed as a light sourc...

    X. Ding, Y. Kawaguchi, H. Niino, A. Yabe in Applied Physics A (2002)

  14. No Access

    Article

    Investigation of the interaction of evaporated aluminum with vapor deposited Teflon AF films via X-ray photoelectron spectroscopy

    The interfacial bonding and mixing between evaporated aluminum and a vapor deposited Teflon AF (abbreviated to AF) film have been investigated with X-ray photoelectron spectroscopy. Graphite carbon (C–C), and ...

    S.-J. Ding, V. Zaporojtchenko, J. Kruse, J. Zekonyte, F. Faupel in Applied Physics A (2003)

  15. No Access

    Article

    Preparation of one-dimensional porous silicon photonic quantum-well structures

    One-dimensional porous silicon (PSi) photonic quantum-well structures have been electrochemically fabricated and spectroscopically characterized. The photonic well in the structure is a photonic crystal (PC) c...

    S.H. Xu, Z.H. **ong, L.L. Gu, Y. Liu, X.M. Ding, J. Zi, X.Y. Hou in Applied Physics A (2003)

  16. No Access

    Article

    Investigation of charge effects on poling and stability for corona-poled polymer films

    The optimal corona-poling temperature of polymer films was accurately determined by measuring the temperature dependence of the in situ second-harmonic (SH) intensity profile under the applied poling electric fie...

    W. Shi, Y.J. Ding, C. Fang, Q. Pan, Q. Gu in Applied Physics A (2003)

  17. No Access

    Article

    Large magnetic entropy change in Nd2/3Sr1/3MnO3

    In order to search for new materials for the application of magnetic refrigeration, the polycrystalline perovskite compound Nd2/3Sr1/3MnO3 was prepared by a solid-state method. The dependence of the magnetization...

    L. Si, Y.L. Chang, J. Ding, C.K. Ong, B. Yao in Applied Physics A (2003)

  18. No Access

    Article

    Study of Ti/Au, Ti/Al/Au, and Ti/Al/Ni/Au ohmic contacts to n-GaN

    The contacts of Ti/Au, Ti/Al/Au, and Ti/Al/Ni/Au films deposited on n-GaN were studied by current–voltage (I–V) and transmission-line-method measurements. The effect of annealing temperature on specific conta...

    Z.X. Qin, Z.Z. Chen, Y.Z. Tong, X.M. Ding, X.D. Hu, T.J. Yu… in Applied Physics A (2004)

  19. No Access

    Article

    Monte Carlo simulation of absolute secondary electron yield of Cu

    A Monte Carlo simulation model of electron interaction with solids that includes cascade secondary electron production has been used to study secondary electron emission from Cu. An optical dielectric function...

    Z.J. Ding, H.M. Li, X.D. Tang, R. Shimizu in Applied Physics A (2004)

  20. No Access

    Article

    Leakage current and pyroelectric properties of compositionally graded (Pb,Ca)TiO3 films

    Highly (100)-oriented, compositionally graded (Pb,Ca)TiO3 (PCT) thin films with a Ca content from 0 to 24 mol % on Pt/Ti/SiO2/Si substrates were prepared by a sol-gel process. The graded structure of the Au/PCT/P...

    X.G. Tang, J. Wang, Y.W. Zhang, H.L.W. Chan, A.L. Ding, C.L. Choy in Applied Physics A (2004)

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