Unravelling the complex formation mechanism of HfO2 nanocrystals using in situ Pair Distribution Function Analysis

Nanoscale ◽  
2021 ◽  
Author(s):  
Rasmus S Christensen ◽  
Magnus Kløve ◽  
Martin Roelsgaard ◽  
Sanna Sommer ◽  
Bo Brummerstedt Iversen
Keyword(s):  
Distribution Function ◽  
Complex Formation ◽  
Band Gap ◽  
Formation Mechanism ◽  
Pair Distribution Function ◽  
Function Analysis ◽  
Wide Band ◽  
Wide Band Gap

Hafnia, HfO2, which is a wide band gap semiconducting oxide, is much less studied than the chemically similar zirconia (ZrO2). Here, we study the formation of hafnia nanocrystals from hafnium...

In situ pair distribution function analysis of crystallizing Fe-silicate melts

2021 ◽  
Vol 56 (9) ◽  
pp. 5637-5657
Author(s):  
Emily T. Nienhuis ◽  
Manzila Tuheen ◽  
Jincheng Du ◽  
John S. McCloy
Keyword(s):  
Distribution Function ◽  
Pair Distribution Function ◽  
Function Analysis ◽  
Silicate Melts

Cathodoluminescence Microanalysis of Electron Irradiation Damage in Wide Band Gap Materials

1998 ◽  
Vol 540 ◽  
Author(s):  
M.A. stevens Kalceff ◽  
M.R. Phillips ◽  
M. Toth ◽  
A.R. Moon ◽  
D.N. Jamieson ◽  
...  
Keyword(s):  
Band Gap ◽  
Electron Irradiation ◽  
Depth Resolution ◽  
Wide Band ◽  
In Situ Monitoring ◽  
Irradiation Damage ◽  
Wide Band Gap ◽  
Energetic Radiation ◽  
Defect Species

AbstractCathodoluminescence (CL) microanalysis (spectroscopy and microscopy) in an electron microscope enables both pre-existing and irradiation induced local variations in the bulk and surface defect structure of wide band gap materials to be characterized with high spatial (lateral and depth) resolution and sensitivity. CL microanalytical techniques allow the in situ monitoring of electron irradiation induced damage, the post irradiation assessment of damage induced by other energetic radiation, and the investigation of irradiation induced electromigration of mobile charged defect species. Electron irradiated silicon dioxide polymorphs and MeV H+ ion implanted Type Ila diamond have been investigated using CL microanalytical techniques.

scholarly journals Drying-induced atomic structural rearrangements in sodium-based calcium-alumino-silicate-hydrate gel and the mitigating effects of ZrO2 nanoparticles

2018 ◽  
Vol 20 (13) ◽  
pp. 8593-8606 ◽  
Author(s):  
Kengran Yang ◽  
V. Ongun Özçelik ◽  
Nishant Garg ◽  
Kai Gong ◽  
Claire E. White
Keyword(s):  
Distribution Function ◽  
Atomic Structure ◽  
Pair Distribution Function ◽  
Function Analysis ◽  
Zro2 Nanoparticles ◽  
Structural Rearrangements ◽  
X Ray ◽  
Alumino Silicate ◽  
Activated Slag

Drying-induced nanoscopic alterations to the local atomic structure of silicate-activated slag and the mitigated effects of nano-ZrO2 are elucidated using in situ X-ray pair distribution function analysis.

scholarly journals Exploring the origins of crystallisation kinetics in hierarchical materials using in situ X-ray diffraction and pair distribution function analysis

2020 ◽  
Vol 22 (34) ◽  
pp. 18860-18867 ◽  
Author(s):  
Matthew E. Potter ◽  
Mark E. Light ◽  
Daniel J. M. Irving ◽  
Alice E. Oakley ◽  
Stephanie Chapman ◽  
...  
Keyword(s):  
Distribution Function ◽  
Pair Distribution Function ◽  
Function Analysis ◽  
X Ray Diffraction ◽  
Crystallisation Kinetics ◽  
Total Scattering ◽  
Hierarchically Porous ◽  
X Ray ◽  
Scattering Measurements

Novel in situ synchrotron total scattering measurements probe the assembly of primary building units into templated hierarchically porous aluminophosphate catalysts, providing unique insights to understanding crystallisation kinetics.

scholarly journals In situ X-ray pair distribution function analysis of accelerated carbonation of a synthetic calcium–silicate–hydrate gel

2015 ◽  
Vol 3 (16) ◽  
pp. 8597-8605 ◽  
Author(s):  
Antoine E. Morandeau ◽  
Claire E. White
Keyword(s):  
Distribution Function ◽  
Pair Distribution Function ◽  
Calcium Silicate Hydrate ◽  
Function Analysis ◽  
High Energy ◽  
Accelerated Carbonation ◽  
X Ray ◽  
Kinetics Of Reaction ◽  
Kinetics Of

The kinetics of reaction and the local atomic structure of carbonating C–S–H gel are characterised using high-energy synchrotron radiation.

Phase control for indium oxide nanoparticles

Nanoscale ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 4038-4050
Author(s):  
Ida Gjerlevsen Nielsen ◽  
Sanna Sommer ◽  
Bo Brummerstedt Iversen
Keyword(s):  
Band Gap ◽  
Wide Band ◽  
Oxide Nanoparticles ◽  
Wide Band Gap ◽  
X Ray ◽  
X Ray Scattering ◽  
Transformation Mechanisms ◽  
Indium Oxides ◽  
Wide Band Gap Semiconductors

The indium oxides, c-In2O3, h-In2O3, InOOH and In(OH)3, have been studied by in situ X-ray scattering to determine the formation and transformation mechanisms in this system of important wide band gap semiconductors.

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