Structure of grain boundaries in nanostructured ZnO

Zhihao Wu; Yingxue Zhou; Xinyi Zhang; Shiqiang Wei; Dongliang Chen
May 2004
Applied Physics Letters;5/31/2004, Vol. 84 Issue 22, p4442
Academic Journal
The grain boundary (GB) of nanocrystalline ZnO films is investigated using the x-ray absorption fine structure technique. With the advantage of the dominant GB volume fraction in our samples, the GB structure is found to be neither simply “gas-like” nor “similar to that of coarse-grained phase,” but experiences a transition from the modestly ordered innermost coordination shell around centered atoms to partly disordered second coordination shell and then to completely disordered higher coordination shells. © 2004 American Institute of Physics.


Related Articles

  • On geometrical aberrations of an X-ray beam experiencing Laue diffraction reflection in a Cauchois scheme. Chen, T. // Technical Physics;Jun2007, Vol. 52 Issue 6, p759 

    Aberrations of rays reflected in a Cauchois scheme are considered on the basis of geometrical concepts of propagation of X-rays. It is shown that geometrical aberration can exceed the Borman delta width as well as the diffraction width of the focus. To reduce the influence of aberrations, the...

  • Compact prototype apparatus for reducing the circle of confusion down to 40 nm for x-ray nanotomography. Kim, Jungdae; Lauer, K.; Yan, H.; Chu, Y. S.; Nazaretski, E. // Review of Scientific Instruments;Mar2013, Vol. 84 Issue 3, p035006 

    We have constructed a compact prototype apparatus for active correction of circle of confusion during rotational motion. Our system combines fiber optic interferometry as a sensing element, the reference cylinder along with the nanopositioning system, and a robust correction algorithm. We...

  • Attenuation of X-Rays by Matter. Thomsen, Volker; Schatzlein, Debbie; Mercuro, David // Spectroscopy;Sep2005, Vol. 20 Issue 9, p22 

    Discusses the attenuation of X-rays in materials. Effect of the interaction of an X-ray photon with an atom of the material on the intensity of X-ray beams; Calculation of attenuation length; Measurement of the mass absorption coefficient.

  • Residual Gas X-ray Beam Position Monitor Development for PETRA III. Ilinski, P.; Hahn, U.; Schulte-Schrepping, H.; Degenhardt, M. // AIP Conference Proceedings;2007, Vol. 879 Issue 1, p782 

    The development effort is driven by the need for a new type of x-ray beam position monitor (XBPM), which will detect the centre of gravity of the undulator beam. XBPMs based on the ionization of a residual gas are considered being the candidate for this future “white” undulator beam...

  • Reduction of X-ray generation in high-intensity laser ion acceleration. Aurand, Bastian; Kuschel, Stephan; Rödel, Christian; Jäckel, Oliver; Polz, Jens; Elkin, Bentsian; Zhao, Huanyu; Karmakar, Anupam; Gibbon, Paul; Kaluza, Malte; Kuehl, Thomas // Applied Physics B: Lasers & Optics;Feb2015, Vol. 118 Issue 2, p247 

    In this paper, we report on measurements of bremsstrahlung in laser ion acceleration experiments from ultra-thin, polymer-based target foils. The influence of laser polarization on the generated $$\gamma$$ radiation, the maximum achievable proton energy and the total proton number is...

  • Modelling of output factors for conformal megavoltage X-ray beams. A T Redpath // British Journal of Radiology;Jul2005, Vol. 78 Issue 931, p612 

    A method is described for calculating the output from conformally shaped megavoltage X-ray beams. The model has been developed for Varian accelerators but is shown to work for accelerators from another manufacturer. The use of dynamic wedging and both static and dynamic multileaf collimated...

  • Some Features of the X-Ray and Radio Emission from OH Megamaser Galaxies. Kandalyan, R. A. // Astrophysics;Jul2005, Vol. 48 Issue 3, p355 

    The properties of OH megamaser galaxies in the x-ray and radio ranges are discussed. Based on a sample of OH megamaser galaxies it is shown that the x-ray emission and the width of the OH radio line are closely related. The line width is also related to the radio emission from megamasers, but it...

  • A Pulsed Low-Hardness X-Ray Source For Radiography in Explosive Experiments. Boriskin, A. S.; Brodsky, A. Ya.; Karelin, V. I.; Plyashkevich, L. N.; Repin, P. B.; Rep'ev, A. G.; Selemir, V. D. // Instruments & Experimental Techniques;Nov/Dec2003, Vol. 46 Issue 6, p824 

    A simple X-ray unit with an effective radiation energy of 50 keV and a pulse FWHM duration of ∼25 ns is described. The unit is designed on the basis of a mass-produced high-voltage nanosecond generator synchronized with a ∼10-ns accuracy. The problems of protecting the unit's radiation...

  • The Cost of Search for Multiple Targets: Effects of Practice and Target Similarity. Menneer, Tamaryn; Donnelly, Nick; Cave, Kyle R. // Journal of Experimental Psychology. Applied;Jun2009, Vol. 15 Issue 2, p125 

    With the use of X-ray images, performance in the simultaneous search for two target categories was compared with performance in two independent searches, one for each category. In all cases, displays contained one target at most. Dual-target search, for both categories simultaneously, produced a...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics