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Crystal structure analysis from powder diffraction data has attracted considerable and ever growing interest in the last decades. X-ray powder diffraction is best known for phase analysis (Hanawalt files) dating back to the 30s. In the late 60s the inherent potential of powder diffraction for crystallographic problems was realized and scientists developed methods for using powder diffraction data at first only for the refinement of crystal structures. With the development of ever growing computer power profile fitting and pattern decomposition allowed to extract individual intensities from overlapping diffraction peaks opening the way to many other applications, especially to ab initio structure determination. Powder diffraction today is used in X-ray and neutron diffraction, where it is a powerful method in neutron diffraction for the determination of magnetic structures. In the last decade the interest has dramatically improved. There is hardly any field of crystallography where the Rietveld, or full pattern method has not been tried with quantitative phase analysis the most important recent application.

Rietveld method. --- X-rays --- Diffraction. --- Diffraction --- PFSR (X-ray crystallography) --- Profile refinement (X-ray crystallography) --- Rietveld analysis --- Rietveld refinement --- Whole-pattern-fitting structure refinement (X-ray crystallography) --- X-ray crystallography --- Technique --- Mineralogy. --- Crystallography. --- Chemistry, inorganic. --- Chemistry, Physical organic. --- Crystallography and Scattering Methods. --- Inorganic Chemistry. --- Physical Chemistry. --- Chemistry, Physical organic --- Chemistry, Organic --- Chemistry, Physical and theoretical --- Inorganic chemistry --- Chemistry --- Inorganic compounds --- Leptology --- Physical sciences --- Mineralogy --- Physical geology --- Crystallography --- Minerals --- Inorganic chemistry. --- Physical chemistry. --- Chemistry, Theoretical --- Physical chemistry --- Theoretical chemistry

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The rapid increasing of concentrations of anthropologically generated greenhouse gases (primarily CO2) in the atmosphere is responsible for global warming and ocean acidification. The International Panel on Climate Change (IPCC) indicates that carbon capture and storage (CCS) techniques are a necessary measure to reduce greenhouse gas emissions in the short-to-medium term. One of the technological solutions is the long-term storage of CO2 in appropriate geological formations, such as deep saline formations and depleted oil and gas reservoirs. Promising alternative options that guarantee the permanent capture of CO2, although on a smaller scale, are the in-situ and ex-situ fixation of CO2 in the form of inorganic carbonates via the carbonation of mafic and ultramafic rocks and of Mg/Ca-rich fly ash, iron and steel slags, cement waste, and mine tailings. According to this general framework, this Special Issue collects articles covering various aspects of recent scientific advances in the geological and mineralogical sequestration of CO2. In particular, it includes the assessment of the storage potential of candidate injection sites in Croatia, Greece, and Norway; numerical modelling of geochemical–mineralogical reactions and CO2 flow; studies of natural analogues providing information on the processes and the physical–chemical conditions characterizing serpentinite carbonation; and experimental investigations to better understand the effectiveness and mechanisms of geological and mineralogical CO2 sequestration.

CO2 reservoir rock --- CO2 sealing capacity --- CO2 sequestration --- CO2 storage capacity --- CO2 storage ratio --- supercritical CO2 --- CO2 geological storage --- depleted gas fields --- deep saline aquifers --- Adriatic offshore --- Croatia --- CO2 geological sequestration --- unconsolidated sediments --- gas hydrates --- suitable methodology for mineral carbonation --- construction and demolition waste --- basalts --- carbonation --- CO2 storage --- hydrochemistry --- regional heat flow --- CO2 leakage --- cement --- well integrity --- leakage remediation --- TOUGHREACT --- reactive transport modelling --- CCS --- mineralization --- carbonatization --- mineral trapping --- mineral sequestration --- Johansen Formation --- North Sea --- sedimentary facies --- serpentinite --- X-ray diffraction --- rietveld refinement --- magnesium leaching --- thermal activation --- meta-serpentine --- heat activation optimization --- CO2 mineral sequestration --- hydromagnesite --- kerolite --- Cu mine --- Montecastelli --- underground microclimate --- replacement process --- low temperature carbonate precipitation --- Secondary Ion Mass Spectrometer --- seawater influx --- hydrothermal circulation --- ophicalcite --- n/a

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Demand for advanced X-ray scattering techniques has increased tremendously in recent years with the development of new functional materials. These characterizations have a huge impact on evaluating the microstructure and structure–property relation in functional materials. Thanks to its non-destructive character and adaptability to various environments, the X-ray is a powerful tool, being irreplaceable for novel in situ and operando studies. This book is dedicated to the latest advances in X-ray diffraction using both synchrotron radiation as well as laboratory sources for analyzing the microstructure and morphology in a broad range (organic, inorganic, hybrid, etc.) of functional materials.

lead-free ceramic --- sol–gel process --- barium zirconate titanate --- dielectric property --- conjugated polymer and blends --- in situ GIXD --- additive --- structure --- strain --- X-ray diffraction --- piezoelectric properties --- lanthanum-modified lead zirconate titanate (PLZT) --- zeolite-W --- cation form --- synchrotron X-ray diffraction --- Rietveld refinement --- high-pressure --- smectite --- bulk moduli --- anhydrous and hydrous environments --- synchrotron X-ray powder diffraction --- pressure-transmitting media --- metallic composites --- Ni --- Ni-W alloys --- silver-exchanged natrolite --- pressure-induced insertion --- high energy-density materials --- high pressure and temperature --- Raman spectroscopy --- ammonium azide --- polynitrogen compounds --- superalloys --- low-angle boundaries --- X-ray topography --- turbine blades --- crystal growth --- nano-perovskite (CaTiO3) --- Young’s modulus --- ultrasonic-pulse echo --- planar density --- residual stress --- laser cavitation peening --- pulse laser --- wedge-shaped amphiphile --- double gyroid phase --- grazing-incidence X-ray scattering --- environmental atomic force microscopy --- vapor annealing --- Williamson-Hall (W-H) --- uniform stress deformation model (USDM) --- hydroxyapatite --- ultrasonic pulse-echo --- thermoplastic polyurethane ureas --- shape memory materials --- synchrotron SAXS/WAXS --- polymer deformation --- lamellar morphology --- poly-ε-caprolactone --- poly(1,4-butylene adipate)