Medium-Range Order in Sol–Gel Prepared Al2O3–SiO2 Glasses: New Results from Solid-State NMR

2014 ◽  
Vol 118 (9) ◽  
pp. 4906-4917 ◽  
Author(s):  
Jinjun Ren ◽  
Long Zhang ◽  
Hellmut Eckert
Keyword(s):  
Solid State ◽  
Solid State Nmr ◽  
Sol Gel ◽  
Range Order ◽  
Medium Range Order ◽  
Medium Range

Short- and Medium-Range Order in Photothermal Refractive Glass Revealed by Solid-State NMR Techniques

2019 ◽  
Vol 123 (19) ◽  
pp. 12411-12422 ◽  
Author(s):  
Lena Marie Funke ◽  
Oliver Janka ◽  
Rainer Pöttgen ◽  
Leonid Glebov ◽  
Michael Ryan Hansen ◽  
...  
Keyword(s):  
Solid State ◽  
Solid State Nmr ◽  
Range Order ◽  
Medium Range Order ◽  
Medium Range ◽  
Nmr Techniques

Characterization of Medium-range Order in Self-Assembled Organic-inorganic Hybrid by Fluctuation X-ray Microscopy

2006 ◽  
Vol 960 ◽  
Author(s):  
Lixin Fan ◽  
David Paterson ◽  
Ian McNulty ◽  
M. M. J. Treacy ◽  
Dushyant Kumar ◽  
...  
Keyword(s):  
Self Assembly ◽  
Sol Gel ◽  
Range Order ◽  
Inorganic Materials ◽  
Medium Range Order ◽  
X Ray ◽  
Sol Gel Process ◽  
Medium Range ◽  
Self Assembled

ABSTRACTThe control of formation and ordering of self assembled nanostructures, with medium- to long-range order, is a challenge that limits advances in many fields of nanotechnology. We have developed a technique, which we call fluctuation x-ray microscopy, that offers quantitative insight into medium-range correlations in disordered materials at nanometer- and larger-length scales. We examined the influence of sol-gel process variables on medium range order in PI-b-PEO/ aluminosilicate bulk using this technique. The nano-structuring of inorganic materials was directed by polymer self-assembly. The medium range correlation between the nanostructures in two hybrids was quantitatively examined and compared.

New insights into medium-range order around titanium in sol–gel derived silica through isotope difference neutron diffraction and reverse Monte Carlo modelling

2004 ◽  
Vol 392 (4-6) ◽  
pp. 503-507 ◽  
Author(s):  
D.M Pickup ◽  
F.E Sowrey ◽  
K.O Drake ◽  
M.E Smith ◽  
R.J Newport
Keyword(s):  
Monte Carlo ◽  
Neutron Diffraction ◽  
Sol Gel ◽  
Range Order ◽  
Reverse Monte Carlo ◽  
Medium Range Order ◽  
Medium Range

Probing Short and Medium Range Order in Al-based Fluorides using High Resolution Solid State Nuclear Magnetic Resonance and Parameter Modelling

2010 ◽  
pp. 141-174
Author(s):  
Christophe Legein ◽  
Monique Body ◽  
Jean-Yves Buzaré ◽  
Charlotte Martineau ◽  
Gilles Silly
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Solid State ◽  
Magnetic Resonance ◽  
High Resolution ◽  
Range Order ◽  
Medium Range Order ◽  
Medium Range ◽  
Nuclear Magnetic

scholarly journals Short and Medium-Range Order in Liquid Ternary Al80Co10Ni10, Al72.5Co14.5Ni13, and Al65Co17.5Ni17.5 Alloys

2010 ◽  
Vol 65 (1-2) ◽  
pp. 123-131 ◽  
Author(s):  
Oleksandr S. Roik ◽  
Oleksiy Samsonnikov ◽  
Volodymyr Kazimirov ◽  
Volodymyr Sokolskii
Keyword(s):  
Three Dimensional ◽  
Range Order ◽  
Ternary Alloys ◽  
X Ray Diffraction ◽  
Medium Range Order ◽  
Intermediate Range Order ◽  
Transition Metal Atoms ◽  
Medium Range ◽  
Three Dimensional Models ◽  
Co Alloys

AbstractA local short-to-intermediate range order of liquid Al80Co10Ni10, Al72.5Co14.5Ni13, and Al65Co17.5Ni17.5 alloys was examined by X-ray diffraction and the reverse Monte Carlo modelling. The comprehensive analysis of three-dimensional models of the liquid ternary alloys was performed by means of the Voronoi-Delaunay method. The existence of a prepeak on the S(Q) function of the liquid alloys is caused by medium range ordering of 3d-transition metal atoms in dense-packed polytetrahedral clusters at temperatures close to the liquidus. The non-crystalline clusters, represented by aggregates of pentagons that consist of good tetrahedra, and chemical short-range order lead to the formation of the medium range order in the liquid binary Al-Ni, Al-Co and ternary Al-Ni-Co alloys.

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