TITLE

Quantitative high-pressure pair distribution function analysis of nanocrystalline gold

AUTHOR(S)
Martin, C. David; Antao, Sytle M.; Chupas, Peter J.; Lee, Peter L.; Shastri, Sarvjit D.; Parise, John B.
PUB. DATE
February 2005
SOURCE
Applied Physics Letters;2/7/2005, Vol. 86 Issue 6, p061910
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Using a diamond anvil cell with high-energy monochromatic x rays, we have studied the total scattering of nanocrystalline gold to 20 Ã…-1 at pressures up to 10 GPa in a hydrostatic alcohol pressure-medium. Through direct Fourier transformation of the structure function [S(Q)], pair distribution functions (PDFs) [G(r)] are calculated without Kaplow-type iterative corrections. Quantitative high-pressure PDF (QHP-PDF) analysis is performed via full-profile least-squares modeling and confirmed through comparison of Rietveld analysis of Bragg diffraction. The quality of the high pressure PDFs obtained demonstrates the integrity of our technique and suggests the feasibility of future QHP-PDF studies of liquids, disordered solids, and materials at phase transition under pressure.
ACCESSION #
16345442

 

Related Articles

  • A cubic phase of C3N4 synthesized in the diamond-anvil cell. Ming, L. C.; Zinin, P.; Meng, Y.; Liu, X. R.; Hong, S. M.; Xie, Y. // Journal of Applied Physics;2/1/2006, Vol. 99 Issue 3, p033520 

    A cubic phase of C3N4 was discovered. It was recovered at ambient conditions from the graphite-like C3N4 (g-C3N4) phase subjected to pressures between 21 and 38 GPa in a diamond-anvil cell, laser heated to temperatures between 1600 and 3000 K. The x-ray-diffraction data of the phase are best...

  • Powder x-ray diffraction system with a curved monochromator for high-pressure and low-temperature use. Suzuki, Eisuke; Endo, Shoichi // Review of Scientific Instruments;Aug2003, Vol. 74 Issue 8, p3726 

    A powder x-ray diffraction system operated at high pressure and low temperature has been developed for a conventional x-ray generator. An incident x ray is focused by a curved monochromator on a sample in a diamond anvil cell coupled with a cryostat with a helium gas closed-cycle refrigerator....

  • Studying single nanocrystals under high pressure using an x-ray nanoprobe. Wang, Lin; Ding, Yang; Patel, Umesh; Yang, Wenge; Xiao, Zhili; Cai, Zhonghou; Mao, Wendy L.; Mao, Ho-kwang // Review of Scientific Instruments;Apr2011, Vol. 82 Issue 4, p043903 

    In this report, we demonstrate the feasibility of applying a 250-nm focused x-ray beam to study a single crystalline NbSe3 nanobelt under high-pressure conditions in a diamond anvil cell. With such a small probe, we not only resolved the distribution and morphology of each individual nanobelt in...

  • HIGH PRESSURE X-RAY DIFFRACTION STUDIES OF Bi2-xSbxTe3 (x = 0,1,2). Jacobsen, M. K.; Kumar, R. S.; Cornelius, A. L.; Sinogeiken, S. V.; Nico, M. F. // AIP Conference Proceedings;12/12/2007, Vol. 955 Issue 1, p171 

    Recently, pressure tuning of the thermoelectric figure of merit has been reported for several materials Bi2Te3 based thermoelectric materials [2],[10],[12]. In order to investigate the bulk properties of Bi2Te3, Sb2Te3, and their solid solution in detail, we have performed structural studies up...

  • Investigation by Synchrotron X-ray Diffraction Topography of the Crystal Structure Defects in Colored Diamonds (Natural, Synthetic, and Treated). Yuan, Joe C. C.; Ming-sheng Peng; Yu-fei Meng // Gems & Gemology;2006, Vol. 42 Issue 3, p93 

    Diamonds are not only important for jewelry, but also have a variety of industrial applications. The presence of defects can often produce desirable properties in diamond. For example, plastic deformation may cause diamonds to appear pink or red. In addition to spectroscopic methods and...

  • Using mosaic crystals for the generation of intense X-ray beams. Baldin, A. N.; Vnukov, I. E.; Shatokhin, R. A. // Technical Physics Letters;Jul2007, Vol. 33 Issue 7, p625 

    The parametric X-ray (PXR) yield due to 500-MeV electrons in a 2-mm-thick diamond crystal with a mosaicity angle of ∼0.2 mrad has been studied. It is shown that the mosaic crystal structure leads to a significant (about fourfold) increase in the PXR yield doe to the contribution of...

  • Lack of the critical pressure for weakening of size-induced stiffness in 3C–SiC nanocrystals under hydrostatic compression. Liu, Haozhe; Hu, Jingzhu; Shu, Jinfu; Höusermann, Daniel; Mao, Ho-kwang // Applied Physics Letters;9/13/2004, Vol. 85 Issue 11, p1973 

    Using in situ high-pressure x-ray diffraction methods, the compressibility of 30 nm 3C–SiC nanocrystals was studied under hydrostatic conditions while helium was used as pressure transmitting medium, as well as under nonhydrostatic conditions without pressure medium. No threshold pressure...

  • In situ high-pressure x-ray diffraction study of H2O ice VII. Somayazulu, Maddury; Jinfu Shu; Chang-sheng Zha; Goncharov, Alexander F.; Tschauner, Oliver; Ho-kwang Mao; Hemley, Russell J. // Journal of Chemical Physics;2/14/2008, Vol. 128 Issue 6, p064510 

    Ice VII was examined over the entire range of its pressure stability by a suite of x-ray diffraction techniques in order to understand a number of unexplained characteristics of its high-pressure behavior. Axial and radial polycrystalline (diamond anvil cell) x-ray diffraction measurements...

  • The rotator phases of neat and hydrated 1-alcohols. Sirota, E. B.; Wu, X. Z. // Journal of Chemical Physics;11/1/1996, Vol. 105 Issue 17, p7763 

    We report an x-ray scattering study of the rotator phases in both dry and hydrated 1-alcohols CH3–(CH2)n-1–OH(12≤n≤26). Hydration was accomplished by using both fixed composition and controlled relative humidity. A hexagonal phase and two tilted phases are reported in...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

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

Try another library?
Sign out of this library

Other Topics