A5018713774- Physics of Superconductivity and Magnetism
- Superconducting Materials and Applications
- Magnetic and transport properties of perovskites and related materials
- HVDC Systems and Fault Protection
- Advanced Condensed Matter Physics
- Superconductivity in MgB2 and Alloys
- Magnetic properties of thin films
- Magnetic Properties and Applications
- ZnO doping and properties
- Nanomaterials and Printing Technologies
- Particle accelerators and beam dynamics
- Magnetic confinement fusion research
- Copper Interconnects and Reliability
- Electronic and Structural Properties of Oxides
- Electric Motor Design and Analysis
- Thermal Analysis in Power Transmission
- Fluid Dynamics and Thin Films
- Semiconductor materials and devices
- Advanced Memory and Neural Computing
- Frequency Control in Power Systems
- Advanced ceramic materials synthesis
- Theoretical and Computational Physics
- Particle Accelerators and Free-Electron Lasers
- Electrohydrodynamics and Fluid Dynamics
- Additive Manufacturing and 3D Printing Technologies
Institut de Ciència de Materials de Barcelona
2014-2025
Consejo Superior de Investigaciones Científicas
2006-2023
Universitat Autònoma de Barcelona
2005-2022
Instituto de Ciencia de Materiales de Sevilla
2022
Massachusetts Institute of Technology
2021
Politecnico di Milano
2021
Ceramics and Refractories Technological Development Company (Greece)
2013
Centre de Recerca Matemàtica
2006-2010
Unidades Centrales Científico-Técnicas
1997
Renfe Operadora (Spain)
1993
Chemical solution deposition (CSD) is a very competitive technique to obtain epitaxial films and multilayers of high quality with controlled nanostructures. Based on the strong attractiveness from cost point view, production long length coated conductors based CSD approach being extensively developed. The trifluoroacetate route (TFA) most widely used achieve YBa2Cu3O7 (YBCO) layers critical currents, however deep understanding all individual consecutive processing steps, as well their mutual...
We have investigated the pressure dependence (up to 20 kbar) of metal-insulator (MI) transition displayed by orthorhombic perovskites R${\mathrm{NiO}}_{3}$ (R=Nd, Pr, and ${\mathrm{Nd}}_{0.7}$${\mathrm{La}}_{0.3}$) means electrical resistance measurements. The temperature decreases under pressure, with a common rate decrease ${\mathit{dT}}_{\mathrm{MI}}$/dP=-4.2 K/kbar, in spite differences ${\mathit{T}}_{\mathrm{MI}}$ (100--200 K). On basis structural effects associated application these...
We report detailed measurements of the electrical resistivity, Seebeck coefficient, and differential scanning calorimetry across metal-insulator (MI) transition (${\mathit{T}}_{\mathrm{MI}}$\ensuremath{\approxeq}205 K) ${\mathrm{NdNiO}}_{3}$. As in isostructural oxide ${\mathrm{PrNiO}}_{3}$, is extremely hysteretic, consistent with first-order character transition. Analysis data shows that metallic nonmetallic phases coexist a broad temperature interval (\ensuremath{\approxeq}70 K). The...
In this paper, we present an inkjet printing approach suited for the deposition of photocatalytically active, transparent titanium oxide coatings from aqueous, colloidal suspension.We used a bottom-up in which microwave-assisted hydrothermal treatment propoxide aqueous solutions presence ethylenediaminetetraacetic acid and triethanolamine was to create suspensions containing titania nanoparticles.Different set-ups, electromagnetic piezoelectric driven, were tested deposit inks on glass...
This paper reports the successful application of ink-jet printing to deposition both continuous coatings and multi-filamentary structures YBCO. Stable inks have been prepared using established TFA-MOD route novel fluorine-free precursors with appropriate rheological properties for printing. Continuous well textured lengths exceeding 100 m a thickness 0.5 µm deposited by electromagnetic from TFA on LZO-buffered Ni–W substrates samples achieved Jc around 1.5 MA cm−2 (self-field, 77 K). On...
The DEMO reactor is expected to be the first application of fusion for electricity generation in near future. To this aim, conceptual design activities are progressing Europe (EU) under lead EUROfusion Consortium order drive on development major tokamak systems. In 2014, carried out by magnet system project team were focused toroidal field (TF) and demonstrated achievements terms concept proposals consolidated evaluations against criteria. Several R&D conducted parallel, together with broad...
The European DEMO, i.e. the demonstration fusion power plant designed in framework of Roadmap to Fusion Electricity by EUROfusion Consortium, is approaching end pre-conceptual design phase, be accomplished with a Gate Review 2020, which all DEMO subsystems will reviewed panels independent experts. latest 2018 baseline has major and minor radius 9.1 m 2.9 m, plasma current 17.9 MA, toroidal field on axis 5.2 T, peak toroidal-field (TF) conductor 12.0 T. 900 ton heavy TF coil prepared four...
We report detailed measurements of the temperature dependence electrical resistivity and Seebeck coefficient for ${\mathrm{PrNiO}}_{3}$ with particular attention to metal-insulator (MI) transition (${\mathit{T}}_{\mathrm{MI}}$\ensuremath{\approxeq}130 K). The in metallic semiconducting phases is negative, thus indicating that majority charge carriers are electronlike both phases. At low (T70 K) display a behavior an activation energy about 22 meV. In intermediate range (70--130 transport...
The objective of this paper is the development ink-jet processing as a new technique for chemical solution deposition YBCO coatings and patterns. Our research mainly focused on investigation determination rheological parameters towards printability water-based inks in order to produce continuous or multi-filamentary patterns SrTiO3 substrates. A 0.185 mol L−1YBCO ink with viscosity 4.77 mPa s surface tension 67.9 mN m−1, resulting ratio Re/We1/2 7.37, developed. Its printing behaviour...
This paper presents a new design for superconducting linear motor (SLM). SLM uses stacks of second-generation (2G) tapes, which are responsible replacing yttrium barium copper oxide bulks. The proposed may operate as synchronous or hysteresis motor, depending on the load force magnitude. A small-scale machine prototype with 2G was constructed and tested to investigate topology. stator traveling magnetic field wave represented by several Nd-Fe-B permanent magnets. relative movement produced...
The axion is a hypothetical particle which candidate for cold dark matter. Haloscope experiments directly search these particles in strong magnetic fields with RF cavities as detectors. Relic Axion Detector Exploratory Setup (RADES) at CERN particular searching matter mass range above 30 <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex-math notation="LaTeX">$\mu$</tex-math></inline-formula> eV. figure of merit our detector depends...
We report that the thermopower Q(T) of (La1−xYx)0.67Ca0.33MnO3 (x=0–0.25) magnetoresistive oxides, displays a pronounced peak at temperatures Ts close to ferromagnetic ordering temperature. The temperature decreases monotonously when increasing x whereas maximal Q(Ts) is found increase with Y contents. huge enhancement Q be as high 460% for x=0.25. It shown extraordinary observed results from reduced charge carrier mobility approaching and variation contents reflects accompanying band narrowing.
Interface physics in oxides heterostructures is pivotal material's science. Domain walls (DWs) ferroic systems are examples of naturally occurring interfaces, where order parameter neighboring domains modified and emerging properties may develop. Here we show that electric tuning ferroelastic domain SrTiO3 leads to dramatic changes the magnetic structure a layer (La1/2Sr1/2MnO3) epitaxially clamped on substrate. We intimately connected existence polar regions at twin boundaries SrTiO3,...
One of the most widespread mathematical formulations applied to simulate electromagnetic phenomena coated conductor in recent literature is H-formulation. However, only validation model has been indirect by using measurements taken from applications, as energy losses ac fields, forces developed levitation systems, or any other parameter related a specific application. Direct calculation requires observation local out-of-plane magnetic field over surface sample, and it accessible under...
Abstract A thorough microwave response study of high temperature superconductors, considered as an alternative beam screen coating, has become integral in the design decisions for CERN’s future research infrastructure. Here, we present surface resistance $$R_{s}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi>R</mml:mi><mml:mi>s</mml:mi></mml:msub></mml:math> various $$\text {REBa}_{2}\text {Cu}_{3}\text {O}_{7-x}$$...
This article presents the next stage of ongoing development equipment designed to carry out both non-destructive and destructive characterizations dielectric materials at cryogenic temperatures for application in HTS power systems. The is measure electric permittivity, dissipation factor ("tan δ") strength electrical insulating under a liquid nitrogen bath 50-60 Hz. In this work, we present concept test proposed equipment, as well measurements aforementioned properties laminated sheets...
We study the magnetic behavior of a finite superconducting ring in presence uniform applied field directed along its axis by means critical-state model and minimization energy. systematically dependence magnetization ac susceptibility upon geometry develop an approximate analytical expression for case narrow rings any aspect ratio. Besides, we show how critical-current density superconductor can be obtained from measurements conclude that is very convenient one such purpose. In particular,...