Fast continuous energy scan with dynamic coupling of the monochromator and undulator at the DEIMOS beamline

Joly, L.; Otero, Edwige; Choueikani, Fadi; Marteau, F.; Chapuis, L.; Ohresser, P.

doi:10.1107/s1600577514003671

Cited by 39 publications

(27 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…X‐ray absorption spectroscopy and X‐ray magnetic circular dichroism experiments were carried out on the DEIMOS beamline of SOLEIL synchrotron . Data were acquired in total electron yield mode.…”

Section: Methodsmentioning

confidence: 99%

Atomic‐Scale Study of Metal–Oxide Interfaces and Magnetoelastic Coupling in Self‐Assembled Epitaxial Vertically Aligned Magnetic Nanocomposites

Radtke

Hennes

Bugnet

et al. 2019

Adv Materials Inter

View full text Add to dashboard Cite

Vertically aligned nanocomposites (VANs) of metal/oxide type have recently emerged as a novel class of heterostructures with great scientific and technological potential in the fields of nanomagnetism, multiferroism, and catalysis. One of the salient features of these hybrid materials is their huge vertical metal/oxide interface, which plays a key role in determining the final magnetic and/or transport properties of the composite structure. However, in contrast to their well‐studied planar counterparts, detailed information on the structural features of vertical interfaces encountered in VANs is scarce. In this work, high resolution scanning transmission electron microscopy (STEM) and electron energy‐loss spectroscopy (EELS) are used to provide an element selective atomic‐scale analysis of the interface in a composite consisting of ultrathin, self‐assembled Ni nanowires, vertically epitaxied in a SrTiO3/SrTiO3(001) matrix. Spectroscopic EELS measurements evidence rather sharp interfaces (6–7 Å) with the creation of metallic NiTi bonds and the absence of nickel oxide formation is confirmed by X‐ray absorption spectroscopy measurements. The presence of these well‐defined phase boundaries, combined with a large lattice mismatch between the oxide and metallic species, gives rise to pronounced magnetoelastic effects. Self‐assembled columnar Ni:SrTiO3 composites thus appear as ideal model systems to explore vertical strain engineering in metal/oxide nanostructures.

show abstract

Section: Methodsmentioning

confidence: 99%

Atomic‐Scale Study of Metal–Oxide Interfaces and Magnetoelastic Coupling in Self‐Assembled Epitaxial Vertically Aligned Magnetic Nanocomposites

Radtke

Hennes

Bugnet

et al. 2019

Adv Materials Inter

View full text Add to dashboard Cite

show abstract

“…Furthermore, access to a synchrotron light source is required to provide a bright source of tuneable X-ray energy. Even then the time-resolution is often limited to several minutes due to dead-time associated with moving and stabilizing mechanical components as the X-ray energy is scanned [14], although this can be at least partially addressed by continuous scanning of the monochromator (and undulator if used) with on-the-fly data collection [15].…”

Section: Introductionmentioning

confidence: 99%

2D Material Membranes for Operando Atmospheric Pressure Photoelectron Spectroscopy

Weatherup

2018

Top Catal

View full text Add to dashboard Cite

Probing the chemistry that occurs at catalyst interfaces under realistic process conditions is key to the rational design of better materials for industrial catalytic reactions. Ambient pressure X-ray photoelectron spectroscopy, has until recently been limited to pressures two orders of magnitude below atmosphere. However, the development of photoelectron transparent membranes based on two-dimensional materials that can maintain large pressure differences and yet have thicknesses approaching or even falling below the inelastic mean free path of photoelectrons, now allows the atmospheric pressure regime and above to be accessed. We introduce here the fundamental principles underlying this membrane-based approach to atmospheric pressure photoelectron spectroscopy, and in this context highlight some of the key design concepts and challenges in performing experiments with this technique. We discuss a number of recent proof-of-concept studies, and highlight the potential of the membrane-based approach for operando characterisation of catalyst interfaces under reaction conditions, as well as some current challenges and limitations in this area.

show abstract

“…the monochromator and the undulator gap are scanned synchronously and data are taken continuously. This dramatically reduces acquisition times compared with point-by-point scans (Rogalev et al, 1998;Joly et al, 2014). A scan across 80 eV with a step size of 100 meV and a counting time of 100 ms per point, which are typical parameters during user experiments, takes less than 85 s execution time in total, 80 s of which are data acquisition.…”

Section: Beam Properties and X-ray Absorption Scansmentioning

confidence: 99%

The high-field magnet endstation for X-ray magnetic dichroism experiments at ESRF soft X-ray beamline ID32

Kummer

Fondacaro

Jiménez

et al. 2016

J Synchrotron Radiat

View full text Add to dashboard Cite

A new high-field magnet endstation for X-ray magnetic dichroism experiments has been installed and commissioned at the ESRF soft X-ray beamline ID32. The magnet consists of two split-pairs of superconducting coils which can generate up to 9 T along the beam and up to 4 T orthogonal to the beam. It is connected to a cluster of ultra-high-vacuum chambers that offer a comprehensive set of surface preparation and characterization techniques. The endstation and the beam properties have been designed to provide optimum experimental conditions for X-ray magnetic linear and circular dichroism experiments in the soft X-ray range between 400 and 1600 eV photon energy. User operation started in November 2014.

show abstract

Fast continuous energy scan with dynamic coupling of the monochromator and undulator at the DEIMOS beamline

Cited by 39 publications

References 16 publications

Atomic‐Scale Study of Metal–Oxide Interfaces and Magnetoelastic Coupling in Self‐Assembled Epitaxial Vertically Aligned Magnetic Nanocomposites

Atomic‐Scale Study of Metal–Oxide Interfaces and Magnetoelastic Coupling in Self‐Assembled Epitaxial Vertically Aligned Magnetic Nanocomposites

2D Material Membranes for Operando Atmospheric Pressure Photoelectron Spectroscopy

The high-field magnet endstation for X-ray magnetic dichroism experiments at ESRF soft X-ray beamline ID32

Contact Info

Product

Resources

About