Monday

Stefan Klotz, IMPMC, Sorbonne, France

Title: High Pressure: Making it, measuring it, and avoiding pitfalls

Abstract: This talk will give a general introduction to techniques and methods applied in the high-pressure community. I will start with an overview of high-pressure devices, their characteristics in terms of volume and maximal pressure as well as their typical applications. I then will discuss different methods how to measure pressure in situ, in particular with optical pressure sensors, discuss aspects of hydrostaticity and stress-strain relations. Finally, I will mention a number of frequently encountered pitfalls and how to handle them.

Ronald Miletich, Univ. Vienna, Austria

Title: X-ray Crystallography under Extremes - Constraints and Applications

Abstract: This lecture will describe limits, boundary conditions and possibilities to extract information from reciprocal space for state-of-the-art diffraction techniques. One dedicated focus is set to how to obtain precise data for lattice metrics. Moreover it will be illuminated, what kind of efforts must be undertaken to obtain structural information from Bragg peak intensities, that fulfil the criteria of IUCr standards. Examples related and applied to the evaluation of equations of state and to high-quality structure refinements of high-pressure data sets will be demonstrated.

LoïcToraille, CEA, Paris, France

Title: Ultra-high pressure generation and hydrides synthesis.

Abstract : This lecture will describe experimental techniques for generating ultra-high pressures using diamond anvil cells, and recent observations in stress mapping in these ultra-high pressures conditions. We will then focus on hydrogen and hydride synthesis strategies, comparing different loading methods and highlighting the importance of sample quality to allow for physical measurements. Case studies from various systems will illustrate those challenges as well as discuss metastability and sample recovery.

Nakoi Ishimatsu, GRC, Ehime Univ., Matsuyama, Japan

Title: Local structure analysis under high pressure using nano polycrystalline diamond anvils

Abstract: Nano polycrystalline diamond (NPD) is useful for the material of anvils not only to generate high pressure but also to extract information of pressure-dependent local structure around the specific element by X-ray absorption and X-ray fluorescence holography. Recent applications of NPD to these spectroscopic techniques will be presented.

Tuesday

Denis Andrault, LMV, Univ. Clermont-Ferrand, France

Ilya Kupenko, ESRF, ID14/ID28

Nicolas Guignot, PSICHÉ beamline, Synchrotron SOLEIL, France

Agnès Dewaele, CEA, Paris

 

Maxim Bykov, Univ. Frankfurt, Germany

Title: Multigrain crystallography

Abstract: The lecture introduces the principles of multigrain crystallography as a method bridging the gap between powder and single-crystal X-ray diffraction. It presents strategies for analyzing and indexing diffraction patterns originating from multiple crystalline domains within a single dataset, along with subsequent steps of data processing. Applications in high-pressure research are illustrated through examples of novel compounds discovered using this approach.

John Wright, ESRF, ID11

Title: Scanning 3DXRD and multi-grain crystallography at ID11

Abstract: ID11 offers a suite grain mapping methods that can exploit spotty X-ray data to see inside polycrystalline samples. The nanoscope endstation allows visitors to align and rotate tiny crystals in a sub-micron X-ray beam size."

Tiziana Boffa-Ballaran, University of Bayreuth, BGI, Germany

Title: Mineral physics at extreme conditions

Abstract: The variation with depth of the average primary and secondary wave velocities of 1-D seismic models can be explained in terms of composition and temperature profile of the Earth’s interior only if the elastic properties (i.e. bulk modulus and shear modulus) as well as the densities of the mineral phases expected at depth are known at the relevant pressure and temperature conditions. This talk will give an overview of how elastic properties of candidate minerals can be obtained at high-pressure and temperature combining X-ray diffraction, Brillouin scattering and laser heating diamond anvil cell techniques.

Wednesday

Nadège Hilairet, UMET, Univ. Lille, France

Mohamed Mezouar, ESRF ID27

José Antonio Alonso, CSIC, Madrid, Spain

Titel: High-pressure synthesis of metastable materials accessed under moderate conditions (P ≤ 3.5 GPa): oxides, chalcogenides, pnictides and hydrides.

Abstract: Many metastable materials can only be stabilized under high pressure conditions. In this talk, I will describe different families, including  perovskite oxides with transition metals in unusual oxidation states (e.g., RNiO3 with Ni3+, R = rare earths); double perovskites such as RCu3Mn4O12 with Jahn–Teller Cu2+ ions at A sites, pyrochlores derived from Tl2Mn2O7 with colossal magnetoresistance, pnictide skutterudites MxCo4Sb12 (M = La, Yb, Ce, Sr, K) with thermoelectric properties, or metal hydrides Mg2MHx (M = Fe, Co, Ni) and AMgH3 (A: alkali metals) with applications in hydrogen storage.

Jeroen Jacobs, HP sample environment, ESRF

Angelika Rosa ESRF BM23/ID24

Title: High-pressure X-ray absorption spectroscopy

Abstract:  In this presentation I will give an overview of the new experimental stations devoted to the studies of matter under extreme conditions at the X-ray absorption beamlines BM23 and ID24-DCM and illustrate the potential of the new setups for extreme conditions.

Benoit Cordonnier, ESRF, ID19/BM18

François Renard, Univ. Oslo, Norway

Title: Imaging processes that occur before and during earthquakes

Abstract: Thanks to the Extreme Brilliant Source and the recent developments of apparatuses that reproduce conditions of pressure and temperature that occur at depth in the Earth's crust, it is now possible to visualize earthquakes processes on real time. Using triaxial apparatuses, the preparation process of earthquakes can be unraveled, whereas shock experiments can reproduce the dynamic damage produced during an earthquake. Both are studied at ESRF.

Yangbin Wang, Center for Advanced Radiation Sources, Univ. Chicago, USA

Title: High-pressure research using large-volume presses at synchrotrons

Abstract: I plan to present an overview of high-pressure research activities using the large-volume press (LVP) at several synchrotron facilities around the world. The large sample volumes in LVP allow an integration of  X-ray diffraction and imaging with other in-situ probing techniques, to study a wide range of complex materials. Effects of dynamic processing (such as deformation, cyclic loading, and thermal cycling) on structural and physical properties of numerous such materials have been investigated. I will use examples to showcase the wide applications of LVP techniques for materials (especially earth and planetary materials) research.

Thursday

Jochen Geck, Institute of Solid State Physics, Univ. Dresden, Germany

Gaston Garbarino, ESRF, ID15b

Thomas Hansen, Ill, Grenoble, France

Christoph Sahle, ESRF ID20

Andrzej Katrusiak, Univ. Poznań, Poland

Fabrice Wilhelm, ESRF ID12

Sofia Michaela Souliou, KIT, Karlsruhe, Germany

Title:  Quantum materials under pressure

Abstract: Application of external pressure is a powerful ally in the quest for understanding and tuning materials, paving the way for designing novel systems with exotic properties. Quantum materials are particularly attractive in this perspective, as these are often governed by the interplay of various degrees of freedom, which can be enhanced or suppressed by small perturbations of external stimuli such as pressure. This lecture will focus on x-ray diffraction and scattering experiments on quantum materials under high pressure and low temperature conditions. Measurements under both hydrostatic and uniaxial compression will be discussed, analysing the specific technical challenges and experimental methodologies for each. Selected case-studies will be presented from systems exhibiting superconducting, magnetic and charge ordering.

Friday

Max Wilke, Univ. Potsdam, Germany

            Title: Introduction to resistively heated DACs combined with x-ray spectroscopy

Abstract: This lecture introduces resistively heated diamond anvil cells (DACs) and their applications. It covers the Basset-type (hydrothermal) DAC, optimized for experiments with aqueous fluids and melts at hydrothermal conditions. This DAC achieves up to 2 GPa and 800 °C, with precise temperature control (±0.1 °C), making it ideal for studying element speciation and solid–liquid equilibration. The lecture also presents DACs optimized for high-pressure applications up to 100 GPa and ~1300 °C, based on the LeToullec design, and heated via either an external heater ring or internal heaters around each diamond. Pressure in these DACs is determined using XRD or spectroscopic markers, while sample temperatures are measured on the diamond surface and controlled to 0.1 °C. The capabilities of both cell types will be illustrated through examples, particularly using X-ray spectroscopy.

Beatrice Ruta, Inst. Néel/ESRF ID10

Title: High-Pressure X-ray Photon Correlation Spectroscopy at 4th generation synchrotrons

Abstarct: The enhanced coherent flux at ESRF-EBS has extended the capabilities of X-ray Photon Correlation Spectroscopy to high X-ray energies, unlocking new scientific opportunities. In this talk, we present a dedicated setup for probing atomic dynamics in disordered systems under high pressure and temperature, along with recent applications in the study of glasses.

Sébastien Merkel, UMET, Univ. Lille, France

Title: Beyond powder or single crystal diffraction : multigrain crystallography in the DAC

Abstract : DAC samples can often be neither perfect powders nor single-crystals and  not appropriate for typical XRD data analysis procedures. Nevertheless, methods developed in the last 20 years allow reconstructing information from numerous crystalline grains inside a sample. This presentation will show the concepts of multigrain crystallography and its applications to DAC research.

Karen Appel, XFEL, Hamburg, Germany

Title: Capabilities of high pressure research at the HED-HIBEF scientific instrument at European XFEL 

Abstract: The HED-HIBEF scientific instrument opened to users in May 2019 and since then has enabled a couple of novel scientific applications in high pressure research including experiments with DACs and high power optical lasers. In this lecture, I will first focus on the unique European XFEL beam properties and then show unique research examples that exploit these covering results from MHz diffraction in a DAC and high resolution spectroscopy in dynamically compressed matter.