For the study of thin films and fibres under load, a uniaxial tensile stage has been developed. The stage has been designed with several key features for tensile load experiments at synchrotron-based polarised infrared microspectroscopy endstations. One of the advantages compared to commercial available stages is its compact design (<20 mm thickness) and the large field of view on the sample...
BL06-XAIRA beamline at ALBA synchrotron light facility, foreseen to perform the first experiments by the end of 2023, will be dedicated to microfocus macromolecular crystallography, complying with a long-standing request from the scientific community and complementing the available MX capabilities of BL13-XALOC beamline.
The beamline is designed to support a broad range of biomedical...
XALOC is a tunable MX beamline, in user operation since 2012, located at the 3rd generation synchrotron ALBA (Barcelona). It has been designed to deal with automatable X-ray diffraction experiments of micrometer-sized crystals, including a variety of crystal sizes, unit-cell dimensions and crystals with high mosaic spread and/or poor diffraction. The aim for a reliable all-in-one beamline is...
El abstract se encuentra en el documento adjunto
Find the abstract document in the attachment
Direct digital manufacturing is a family of technologies which enables products to be manufactured directly from a digital definition without the use of specialized tooling or molds. Fused deposition modelling and stereolithography are probably the most common and widely used of these transformation technologies. These have developed out of techniques to rapidly produce prototypes of products...
The relationship between Mn local structure and the polar and magnetic phases of A-site ordered REBaMn2O6 [1-3] and disordered RE0.5Ba0.5MnO3 (RE: La, Nd, Sm and Y) manganites has been investigated combining high energy resolution fluorescence and total fluorescence detected X-ray absorption at the Mn K-edge, to overcome the interference of the RE L-edges [4]. The extended k-range EXAFS...
Ca$_3$Mn$_2$O$_7$ was proposed as a prototypical multiferroic material in which the ferroelectric and the ferromagnetic ground state arise from the same elastic lattice instability, providing an indirect but high magnetoelectric coupling mechanism.[1] In order to further tune the functional properties of this system towards multiferroicity at room temperature, we have applied chemical doping...
The BL31-FaXToR is the new beamline currently under construction at the third generation synchrotron facility ALBA, dedicated to hard x-ray micro-tomography. The beamline will provide the opportunity to perform 3D imaging within sub-seconds time resolution, working under mono- or white-beam conditions. Absorption and phase-contrast (mostly based on free propagation and grating interferometry)...
ALBA is a third generation 3-GeV synchrotron radiation facility built near Barcelona. Since 2012, it serves worldwide academic and industrial users. At the present day its portfolio includes nine operating beamlines, with an additional five, one that will soon enter into operation, and four that are in the design/construction phases, that will expand its capabilities. Among these new...
Iron and Manganese oxides are commonly used to colour and decorated lead glazes since medieval times. Original raw pigments react, dissolve, and recrystallize into new crystalline compounds during firing. Their nature, size and distribution depend on the composition of the pigment, glaze and ceramic ground, method of application and thermal paths. Their presence gives direct information on the...
Applications of natural rubber often involve biaxial deformation, yet most testing of rubber takes place using uniaxial deformation, despite the fact that, biaxial extension provides a more exacting test of theoretical models. In this work, we design and develop a novel equi-biaxial deformation stage which enables in-situ and time resolving small-angle X-Ray scattering and wide-angle X-ray...
Ver documento adjunto.
See attached document.
The epsilon phase of Fe$_2$O$_3$ is a ferrimagnetic polymorph that stands out for a remarkable magnetic anisotropy (K$_u$~2·10$^5$ J/m3) and sizeable remnant magnetization at room temperature (~50 kA/m)[1] making it appealing for applications in magnetic recording and electromagnetic applications in the range of millimetre waves [2]. Moreover, ε-Fe$_2$O$_3$ is also interesting from a more...
Manganese-based (such as MnO2) cathodes have been attracting enormous attentions in aqueous Zn metal battery, thanks to its low-cost, suitable potential and considerable capacity. However, the electrochemical mechanism remains unclear, being ascribed to co-insertion/conversion with Zn2+, Mn2+, H+, or even precipitation of an intermediate products (Zn4SO4(OH)6·xH2O, ZHS), which is retrained by...
Investigation on the preparation of efficient and flexible high temperature superconducting materials (HTS) is one of the puzzles to be solved for the Energy Transition goal. One of the important parts of this development is focused on the cost-effective, scalable methods of synthesis of such materials.
Nowadays, HTS based on REBa2Cu3O7 (RE=Y or Rare Earth, REBCO) are manufactured as long,...
Ferrimagnetic tetragonal Mn-based Heusler compound family Mn$_{3}$G (G=Ga, Ge) has attracted much attention in the last decade due to the strong magneto-crystalline anisotropy along the $c$-axis [1], small magnetic moment [1] and high spin polarization [2], thus standing as a good candidate for non-volatile and efficient high density magnetic random access memories. In this family of...
Our object of study is a human protein anchored at the mitochondrial inner membrane. This protein consists of three domains whose function is still unknown. The N-terminal domain (N) spans through the intermembrane space, whereas the C-terminal domain (C) faces the mitochondrial matrix, both regions being connected by a transmembrane helix embedded in the inner membrane. Several constructs of...
A wide diversity of microorganisms has been recognized to enzymatically reduce toxic selenium forms (SeVI and SeIV) to non-toxic elemental selenium (Se0). The Se0 formed is usually produced in form of nanoparticles (NPs) with a wide array of shapes (spheres, nanorods, nanowires, etc.) structures (amorphous, monoclinic, trigonal, etc.), and sizes, which influence their environmental behaviour...
This study evaluates the use of whole seaweed biomass to obtain bio-based films for food packaging applications in a more sustainable and energy efficient way. To this end, four different species of agarophytes (Gelidium sesquipedale, Gracilaria chilensis, Gracilaria tenuistipitata and Gracilaria verrucosa) were minimally processed by melt blending combined with compression moulding,...
Metal-Organic Frameworks (MOFs) are functional materials where the interconnection of inorganic coordination and organic linker chemistries provides a virtually unlimited chemical parameter space to investigate material responsiveness through chemical-structural changes. Their open network structure gives MOFs an extraordinary structural flexibility that often results in a large structural...
Calcium orthovanadates and orthophosphates substituted with various cations attract researchers’ attention because of opportunity of their application in various fields, especially in optoelectronics, biomedicine and in chemistry in connection with their catalytic properties. Parent compounds $Ca_3(XO_4)_2$, X = V or P, are known to crystallize in R3c space group. The unsubstituted...
We present an overview of the status and capabilities of the PhotoEmission Electron Microscope (PEEM) at the CIRCE beamline of the ALBA synchrotron. The PEEM instrument, which can be also used with an electron gun (Low Energy Electron Microscopy (LEEM) and micro-LEED), is a versatile, multipurpose surface and thin film characterization platform. The Synchrotron irradiation (Photon energy and...
Fresco paintings are made of lime or dolomitic mortars [1,2]. The mortars dry reacting with the atmospheric CO2 and produce, depending on their nature, different calcium carbonate polymorphs.
Casein was widely used in antiquity as a binder or glue in different painting techniques. Since the beginning of the 20th century it has also been applied to artwork restoration thanks to its adhering...
Topological insulators (TIs) are materials of particular interest because of their exceptional features stemming from their conducting, topologically protected surface states. The combination of topological properties and magnetic order can lead to new quantum states of matter as the quantum anomalous Hall effect (QAHE) [1]. Recent discoveries as the first antiferromagnetic topological...
The layered perovskite YBaCuFeO5 is considered one of the best candidates to high-temperature spin-driven multiferroics. In RBaCuFeO5 perovskites (R: rare-earth or Y) A-site cations are fully ordered and their magnetic properties strongly depend on the preparation process [1,2]. They exhibit partial cationic disorder at the B-site that generates a magnetic spiral stabilized through...
X ray Resonant Magnetic Scattering (XRMS) was used to understand the magnetic behavior of a 2-dimensional square array of trilayer ellipsoidal disks of submicrometer size (800 nm) deposited on Si. The disks were made of Fe (14 nm)/Al (3 nm)/Co (17 nm) by magnetron sputtering and lithographied by laser interferometry. The experiment was done in MARES end-station, in BL29 at the ALBA...
The Multilayer Monochromator for the BioSAXS beamline at the Australian Synchrotron is intended to provide high monochromatic flux into the experimental station. A vertical bounce arrangement using a single Ru/B4C multilayer stripe will deliver a flux of up to 5 x 10^14 photons/s with a 1% bandwidth off an undulator insertion device. A side clamped water-cooled solution is used to dissipate...
The circularly polarized absorption spectrum of Dy M5 in DyCo4.5 amorphous alloys was decomposed in its spectral components related to transitions to states with the dysprosium angular moment parallel, antiparallel and perpendicular to the applied field [1]. This was done taking advantage of the atomic-like behavior of the 4f electrons, and the fact that, due to their large orbital moment in...
Cubic Rashba effect and 2D-ferromagnetism at the iridium-silicide surfaces of antiferromagnetic GdIr2Si2 and mixed-valent EuIr2Si2
Two-dimensional (2D) electron states at the surface of RT2Si2 compounds (R = lanthanide, T = transition metal) with ThCr2Si2 structure have proven to be ideal model systems for studying the joint action of spin-orbit (SOI) and exchange interactions on...
Antiferromagnetic (AFM) oxide materials in low-dimensional geometries, either in nonmagnetic or magnetic environments, display a rich variety of magnetic behavior. They are very interesting materials to investigate the fundamental physics of finite-size effects in magnetic systems. Despite the limited applications in current technology, AFM oxides are important reference and model systems for...
We would welcome the opportunity to take part in the presentation abstract session to highlight “The benefits of Open Data”.
Using Photon and Neutron (PaN) sources to investigate samples of matter at molecular or atomic level apply to extremely diverse science domains, ranging from chemistry and life science to palaeontology and art history. The scientific community represented by PaNOSC...
In the actual paradigm, where it is possible to grow magnetic nanostructures with 3D magnetization configuration, more complex structures appear, such as vortexes, skyrmions or hopfions. In order to visualize these new configurations, new magnetic imaging techniques different from the conventional 2D approach are mandatory. With X-ray Magnetic Circular Dichroism (XMCD) in X-ray transmission...
