Short-Range Ordering by Displacement of Tl and O Atoms in Tl2CaBa2cu2O8 Studied by Pair Distribution Function and Rietveld Analysis

1989 ◽  
Vol 156 ◽  
Author(s):  
B. H. Toby ◽  
W. Dmowskia ◽  
T. Egami ◽  
J. D. Jorgensen ◽  
M. A. Subramanian ◽  
...  
Keyword(s):  
Distribution Function ◽  
Local Structure ◽  
Pair Distribution Function ◽  
Short Range ◽  
Function Analysis ◽  
Rietveld Analysis ◽  
Temperature Dependent ◽  
Atomic Pair Distribution Function ◽  
Atomic Pair ◽  
Short Range Ordering

ABSTRACTAtomic pair distribution function analysis has demonstrated displacements of Tl and O atoms within the Tl-O layers with shortrange ordering of lower symmetry than the crystallographic lattice. Two models have been proposed for these displacements. Rietveld analysis neither confirms nor contradicts these models. Temperature-dependent PDF measurements show changes in local structure correlating with temperature.

scholarly journals Atomic pair distribution function analysis of materials containing crystalline and amorphous phases

2005 ◽  
Vol 220 (12/2005) ◽  
Author(s):  
Thomas Proffen ◽  
Katharine L. Page ◽  
Sylvia E. McLain ◽  
Bjørn Clausen ◽  
Timothy W. Darling ◽  
...  
Keyword(s):  
Distribution Function ◽  
Pair Distribution Function ◽  
Function Analysis ◽  
Amorphous Phases ◽  
Atomic Pair Distribution Function ◽  
Atomic Pair

scholarly journals Structure determination of molecular nanocomposites by combining pair distribution function analysis and solid-state NMR

RSC Advances ◽  
2015 ◽  
Vol 5 (12) ◽  
pp. 8895-8902 ◽  
Author(s):  
E.-E. Bendeif ◽  
A. Gansmuller ◽  
K.-Y. Hsieh ◽  
S. Pillet ◽  
Th. Woike ◽  
...  
Keyword(s):  
Distribution Function ◽  
Solid State ◽  
Solid State Nmr ◽  
Pair Distribution Function ◽  
Function Analysis ◽  
Structural Characterisation ◽  
Atomic Pair Distribution Function ◽  
X Ray Scattering ◽  
Atomic Pair

Total X-ray scattering coupled to atomic pair distribution function analysis (PDF) and solid state NMR allowed the identification and structural characterisation of isolated molecules and nanocrystals of sodium nitroprusside confined in mesoporous silica.

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.

Local Crystal Structures of Ge2Sb2Te5Revealed by the Atomic Pair Distribution Function Analysis

2006 ◽  
Vol 45 (11) ◽  
pp. 8789-8794 ◽  
Author(s):  
Shin-ichi Shamoto ◽  
Katsuaki Kodama ◽  
Satoshi Iikubo ◽  
Tomitsugu Taguchi ◽  
Noboru Yamada ◽  
...  
Keyword(s):  
Distribution Function ◽  
Crystal Structures ◽  
Pair Distribution Function ◽  
Function Analysis ◽  
Atomic Pair Distribution Function ◽  
Atomic Pair

Obtaining structural information from the atomic pair distribution function

2004 ◽  
Vol 219 (3) ◽  
Author(s):  
Thomas Proffen ◽  
Katharine L. Page
Keyword(s):  
Distribution Function ◽  
Atomic Structure ◽  
Pair Distribution Function ◽  
Short Range ◽  
Structural Information ◽  
Atomic Pair Distribution Function ◽  
Atomic Pair ◽  
Medium Range ◽  
Macroscopic Properties ◽  
Modelling Techniques

AbstractThe knowledge of the detailed atomic structure of modern materials is the key to understanding the their macroscopic properties. The atomic pair distribution function (PDF) reveals short-range and medium-range structural information. In this paper we present an overview of refinement and modelling techniques. In short, we will be trying to answer the question: What can I learn from my PDF?

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
Sign in / Sign up

Export Citation Format

Share Document