scholarly journals Mechanisms of Pressure-Induced Phase Transitions by Real-Time Laue Diffraction

Crystals ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 672 ◽  
Author(s):  
Dmitry Popov ◽  
Nenad Velisavljevic ◽  
Maddury Somayazulu
Keyword(s):  
High Pressure ◽  
Diagnostic Technique ◽  
Current Status ◽  
Laue Diffraction ◽  
Time Resolved ◽  
In Operando ◽  
Beam Diffraction ◽  
Photon Source ◽  
Microstructural Studies

Synchrotron X-ray radiation Laue diffraction is a widely used diagnostic technique for characterizing the microstructure of materials. An exciting feature of this technique is that comparable numbers of reflections can be measured several orders of magnitude faster than using monochromatic methods. This makes polychromatic beam diffraction a powerful tool for time-resolved microstructural studies, critical for understanding pressure-induced phase transition mechanisms, by in situ and in operando measurements. The current status of this technique, including experimental routines and data analysis, is presented along with some case studies. The new experimental setup at the High-Pressure Collaborative Access Team (HPCAT) facility at the Advanced Photon Source, specifically dedicated for in situ and in operando microstructural studies by Laue diffraction under high pressure, is presented.

Kinetics of high-pressure mineral phase transformations using in situ time-resolved X-ray diffraction in the Paris-Edinburgh cell: a practical guide for data acquisition and treatment

2008 ◽  
Vol 72 (2) ◽  
pp. 683-695 ◽  
Author(s):  
J. P. Perrillat
Keyword(s):  
High Pressure ◽  
Phase Transformations ◽  
Kinetic Studies ◽  
X Ray Diffraction ◽  
Time Resolved ◽  
X Ray ◽  
Practical Guide ◽  
Set Up ◽  
Isothermal Kinetic

AbstractSynchrotron X-ray diffraction (XRD) is a powerful technique to study in situ and in real-time the structural and kinetic processes of pressure-induced phase transformations. This paper presents the experimental set-up developed at beamline ID27 of the ESRF to perform time-resolved angle dispersive XRD in the Paris-Edinburgh cell. It provides a practical guide for the acquisition of isobaric-isothermal kinetic data and the construction of transformation-time plots. The interpretation of experimental data in terms of reaction mechanisms and transformation rates is supported by an overview of the kinetic theory of solid-solid transformations, with each step of data processing illustrated by experimental results of relevance to the geosciences. Reaction kinetics may be affected by several factors such as the sample microstructure, impurities or differential stress. Further high-pressure kinetic studies should investigate the influence of such processes, in order to acquire kinetic information more akin to natural or technological processes.

scholarly journals In Situ Initial Growth Studies of SrTiO3 on SrTiO3 by Time Resolved High Pressure RHEED

1998 ◽  
Vol 526 ◽  
Author(s):  
Gertjan Koster ◽  
Guus J.H.M. Rijnders ◽  
Dave H.A. Blank ◽  
Horst Rogalla
Keyword(s):  
High Pressure ◽  
Pulsed Laser ◽  
High Energy ◽  
Initial Growth ◽  
Time Resolved ◽  
Force Microscopy ◽  
Atomic Force ◽  
Different Temperatures ◽  
Substrate Surfaces

AbstractThe initial growth of pulsed laser deposited SrTiO3 on SrTiO3 has been studied using high pressure Reflection High Energy Electron Diffraction (RHEED) and Atomic Force Microscopy (AFM). For this, we developed a Pulsed Laser Deposition (PLD)-RHEED system, with the possibility to study the growth and to monitor the growth rates, in situ, at typical PLD pressures (10-50 Pa). Using perfect single crystal SrTiO3 substrate surfaces, we observe true 2D intensity oscillations at different temperatures. Simultaneously, information on the diffusion of the deposited material on the surface could be extracted from the relaxation of the intensity after each laser pulse. The characteristic times depend on pressure and temperature as well as the 2D coverage during growth.

A Multi-Anvil High Pressure System with Synchrotron X-Ray Probe: New Opportunities for In-Situ Materials Research at Simultaneously High Pressure and Temperature

1997 ◽  
Vol 499 ◽  
Author(s):  
Y. Wang ◽  
G. Shen ◽  
M. Rivers ◽  
S. Sutton
Keyword(s):  
High Pressure ◽  
National Laboratory ◽  
Argonne National Laboratory ◽  
Pressure System ◽  
High Pressure And Temperature ◽  
High Pressure High Temperature ◽  
Materials Research ◽  
Photon Source ◽  
High Pressure Apparatus

ABSTRACTWe describe the multi-anvil, large-volume, high-pressure facility that is being constructed at the GeoSoilEnviroCARS (Sector 13) at the Advanced Photon Source, Argonne National Laboratory. Various multi-anvil, high-pressure apparatus will be used to cover pressure and temperature conditions up to 40 GPa and 3000 °C, respectively, with milimeter to centimeter sized samples. This national facility is open to all users, providing excellent opportunities for high pressure, high temperature experiments.

IN SITU TIME RESOLVED LAUE DIFFRACTION DURING MICRO-COMPRESSION EXPERIMENTS

2008 ◽  
Vol 01 (02) ◽  
pp. 151-157
Author(s):  
ROBERT MAAß ◽  
STEVEN VAN PETEGEM ◽  
HELENA VAN SWYGENHOVEN ◽  
DANIEL GROLIMUND ◽  
PETER M. DERLET ◽  
...  
Keyword(s):  
Laue Diffraction ◽  
Time Resolved

scholarly journals High-Pressure Sound Velocity Measurements of Liquids Using In Situ Ultrasonic Techniques in a Multianvil Apparatus

Minerals ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 126 ◽  
Author(s):  
Zhicheng Jing ◽  
Tony Yu ◽  
Man Xu ◽  
Julien Chantel ◽  
Yanbin Wang
Keyword(s):  
High Pressure ◽  
Sound Velocity ◽  
Velocity Measurements ◽  
Melting Temperatures ◽  
Technical Developments ◽  
Silicate Liquids ◽  
Ultrasonic Techniques ◽  
Photon Source

Sound velocity and equation of state of liquids provide important constraints on the generation, presence, and transport of silicate and metallic melts in the Earth’s interior. Unlike their solid counterparts, these properties of liquids pose great technical challenges to high-pressure measurements and are poorly constrained. Here we present the technical developments that have been made at the GSECARS beamline 13-ID-D of the Advanced Photon Source for the past several years for determination of sound velocity of liquids using the ultrasonic techniques in a 1000-ton Kawai-type multianvil apparatus. Temperature of the sound velocity measurements has been extended to ~2400 K at 4 GPa and ~2000 K at 8 GPa to enable studies of liquids with very high melting temperatures, such as the silicate liquids.

In Situ X-Ray Techniques for Electrochemical Interfaces

2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Bruna F. Baggio ◽  
Yvonne Grunder
Keyword(s):  
Annual Review ◽  
Publication Date ◽  
Time Resolved ◽  
X Ray ◽  
X Ray Scattering ◽  
Recent Developments ◽  
In Operando ◽  
Electrochemical Interfaces ◽  
Ray Scattering

This article reviews progress in the study of materials using X-ray-based techniques from an electrochemistry perspective. We focus on in situ/in operando surface X-ray scattering, X-ray absorption spectroscopy, and the combination of both methods. The background of these techniques together with key concepts is introduced. Key examples of in situ and in operando investigation of liquid–solid and liquid–liquid interfaces are presented. X-ray scattering and spectroscopy have helped to develop an understanding of the underlying atomic and molecular processes associated with electrocatalysis, electrodeposition, and battery materials. We highlight recent developments, including resonant surface diffraction and time-resolved studies. Expected final online publication date for the Annual Review of Analytical Chemistry, Volume 14 is June 2021. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.

scholarly journals Materials for energy storage and conversion: Probing functionality with PDF

2014 ◽  
Vol 70 (a1) ◽  
pp. C855-C855
Author(s):  
Karena Chapman
Keyword(s):  
Energy Storage ◽  
Energy Storage And Conversion ◽  
Time Resolved ◽  
Versatile Tool ◽  
Model Independent ◽  
Analytical Approaches ◽  
Electronic Chemical ◽  
Photon Source ◽  
Insight Into

In the last decade, the potential of the pair distribution function (PDF) method as a versatile tool for materials characterization has expanded enormously, driven by accelerated data acquisition (from hours to sub-second) and the advent of dedicated PDF instruments, such as 11-ID-B at the Advanced Photon Source. New time-resolved, in-situ/operando, parametric, and combined experimental capabilities coupled with innovative model-independent approaches to data analysis are being developed to harness the growing potential of this methodology. For example, while the complex multicomponent architecture of batteries and their coupled electronic, chemical and structural transformations complicate investigations of functionality, through the development of new insitu PDF measurement capabilities and analytical approaches, we have been able to gain insight into the structure and reactivity of these electrochemical energy storage systems.[1] This presentation will describe recent studies of electrode reactions during cycling and the atomic structure of electrolytes.[2]

An Original Model Experiment Designed for High-Pressure Crystallization with a Polymer Processing Concern

2013 ◽  
Vol 554-557 ◽  
pp. 1592-1601
Author(s):  
Severine A.E. Boyer ◽  
Jean Marc Haudin
Keyword(s):  
High Pressure ◽  
Model Experiment ◽  
Polymer Processing ◽  
Original Model ◽  
Avrami Equation ◽  
Physical Analysis ◽  
Time Resolved ◽  
Diamond Anvil ◽  
Kinetics Of

A comprehensive understanding of the inherent link between in-situ growth kinetics of a polymer spherulite and high-pressure constraints under controlled temperature is concerned. As a matter of fact, while the link with temperature is well illustrated, little comprehensive study has been conducted to quantify the effect of pressure. This is yet required to model ‘extreme’ polymer processing conditions.Mainly, the experimental set-ups developed to reproduce the pressure effect can be classified into four families: “simple” cells, dilatometric set-ups, differential thermal analysis and diamond anvil plus in-situ measurement. In this context, an original model experiment, named CRISTAPRESS, has been constructed. The cell design exploits the optical properties of semi-crystalline spherulites. Time-resolved light depolarizing microscopic observations are conducted concomitantly with a fine PVT control, for high pressure up to 200 MPa and temperature up to 300 °C. The physical analysis of isothermal and isobaric holding of a model polymer shows the influence of temperature and pressure on the key kinetic parameters of crystallization, i.e., the growth rate and the number of activated nuclei, as well as on the subsequent morphologies. Simple modeling dealing with the Avrami equation and the Hoffman & Lauritzen theory is established.

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