D014 Three-dimensional structure of nanophase materials from high-energy X-ray diffraction and atomic pair distribution function analysis

2006 ◽  
Vol 21 (2) ◽  
pp. 172-172
Author(s):  
V. Petkov
Keyword(s):  
Pair Distribution Function ◽  
Function Analysis ◽  
Three Dimensional ◽  
High Energy ◽  
Dimensional Structure ◽  
X Ray Diffraction ◽  
X Ray ◽  
Atomic Pair Distribution Function ◽  
Atomic Pair ◽  
Nanophase Materials

scholarly journals Structure of nanosized materials by high-energy X-ray diffraction: study of titanate nanotubes

2007 ◽  
Vol 222 (11/2007) ◽  
Author(s):  
Milen Gateshki ◽  
Qing Chen ◽  
Lian-Mao Peng ◽  
Peter Chupas ◽  
Valeri Petkov
Keyword(s):  
Pair Distribution Function ◽  
Function Analysis ◽  
High Energy ◽  
Atomic Scale ◽  
Titanate Nanotubes ◽  
X Ray Diffraction ◽  
X Ray ◽  
Nanosized Materials ◽  
Atomic Pair Distribution Function ◽  
Atomic Pair

High-energy X-ray diffraction and atomic Pair Distribution Function analysis are employed to determine the atomic-scale structure of titanate nanotubes. It is found that the nanotube walls are built of layers of Ti–O

THE ANALYSIS OF THE ATOMIC PAIR DISTRIBUTION FUNCTION OF PMN-BASED NANOPOWDERS BY X-RAY DIFFRACTION

2012 ◽  
Vol 26 (18) ◽  
pp. 1250118 ◽  
Author(s):  
M. GHASEMIFARD ◽  
GH. H. KHORRAMI
Keyword(s):  
Distribution Function ◽  
Pair Distribution Function ◽  
Three Dimensional ◽  
Ferroelectric Material ◽  
Atomic Scale ◽  
X Ray Diffraction ◽  
X Ray ◽  
Atomic Pair Distribution Function ◽  
Atomic Pair ◽  
Perovskite Type

The three-dimensional atomic-scale structure around Mg , Nb , Ti and Zr atoms in a series ferroelectric material such as PMN, PZT, PMN-PZT and PMN-PT has been studied using X-ray diffraction ( MoK α), Rietveld refinement and the atomic pair distribution function (PDF) technique. The structure and particle size of the powders was determined by X-ray diffraction and TEM observation. The studies show that the materials are disordered at nanometer length distances. The three-dimensional atomic ordering in PMN-based nanopowders may well be described by a cubic structure of the perovskite type, similar to that occurring in the bulk crystals. At the end, the analyzed data show that the sizes of ZrO 6 octahedral are larger than TiO 6 octahedral.

Structure of nanocrystalline MgFe2O4from X-ray diffraction, Rietveld and atomic pair distribution function analysis

2005 ◽  
Vol 38 (5) ◽  
pp. 772-779 ◽  
Author(s):  
Milen Gateshki ◽  
Valeri Petkov ◽  
Swapan K. Pradhan ◽  
Tom Vogt
Keyword(s):  
Distribution Function ◽  
Pair Distribution Function ◽  
Structural Information ◽  
Function Analysis ◽  
Three Dimensional ◽  
Structural Disorder ◽  
Dimensional Structure ◽  
Spinel Type ◽  
Atomic Pair Distribution Function ◽  
Atomic Pair

The three-dimensional structure of nanocrystalline magnesium ferrite, MgFe2O4, prepared by ball milling, has been determined using synchrotron radiation powder diffraction and employing both Rietveld and atomic pair distribution function (PDF) analysis. The nanocrystalline ferrite exhibits a very limited structural coherence length and a high degree of structural disorder. Nevertheless, the nanoferrite possesses a very well defined local atomic ordering that may be described in terms of a spinel-type structure with Mg2+and Fe3+ions almost randomly distributed over its tetrahedral and octahedral sites. The new structural information helps explain the material's unusual magnetic properties.

scholarly journals High real-space resolution structure of materials by high-energy x-ray diffraction

1999 ◽  
Vol 590 ◽  
Author(s):  
V. Petkov ◽  
S. J. L. Billinge ◽  
J. Heising ◽  
M. G. Kanatzidis ◽  
S. D. Shastri ◽  
...  
Keyword(s):  
Pair Distribution Function ◽  
High Energy ◽  
Real Space ◽  
Function Technique ◽  
X Ray Diffraction ◽  
X Ray ◽  
Space Resolution ◽  
Atomic Pair Distribution Function ◽  
Atomic Pair ◽  
Resolution Structure

ABSTRACTResults of high-energy synchrotron radiation experiments are presented demonstrating the advantages of the high-resolution atomic Pair Distribution Function technique in determining the structure of materials with intrinsic disorder.

Confirmation of disordered structure of ultrasmall CdSe nanoparticles from X-ray atomic pair distribution function analysis

2013 ◽  
Vol 15 (22) ◽  
pp. 8480 ◽  
Author(s):  
Xiaohao Yang ◽  
Ahmad S. Masadeh ◽  
James R. McBride ◽  
Emil S. Božin ◽  
Sandra J. Rosenthal ◽  
...  
Keyword(s):  
Distribution Function ◽  
Pair Distribution Function ◽  
Function Analysis ◽  
Cdse Nanoparticles ◽  
X Ray ◽  
Disordered Structure ◽  
Atomic Pair Distribution Function ◽  
Atomic Pair
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