0000000000668520

AUTHOR

Laure Catala

showing 4 related works from this author

Charge-transfer driven by ultrafast spin-transition in a CoFe Prussian blue analogue

2020

Photoinduced charge-transfer is an important process in nature and technology and is responsible for the emergence of exotic functionalities, such as magnetic order for cyanide-bridged bimetallic coordination networks. Despite its broad interest and intensive developments in chemistry and material sciences, the atomic-scale description of the initial photoinduced process, which couples intermetallic charge-transfer and spin transition, has been debated for decades; it has been beyond reach due to its extreme speed. Here we study this process in a prototype cyanide-bridged CoFe system by femtosecond X-ray and optical absorption spectroscopies, enabling the disentanglement of ultrafast electr…

[PHYS]Physics [physics]Prussian blue010405 organic chemistryGeneral Chemical EngineeringSpin transitionIntermetallicGeneral Chemistry[CHIM.MATE]Chemical Sciences/Material chemistry010402 general chemistryPhotomagnetism01 natural sciences0104 chemical sciencesultrafast dynamicschemistry.chemical_compoundchemistryChemical physicsFemtosecond[PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci][CHIM]Chemical Sciences[CHIM.COOR]Chemical Sciences/Coordination chemistry[PHYS.COND]Physics [physics]/Condensed Matter [cond-mat]Absorption (electromagnetic radiation)Ultrashort pulseBimetallic stripComputingMilieux_MISCELLANEOUS
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Imaging the Magnetic Reversal of Isolated and Organized Molecular-Based Nanoparticles using Magnetic Force Microscopy

2015

In the race towards miniaturization in nanoelectronics, magnetic nanoparticles (MNPs) have emerged as potential candidates for their integration in ultrahigh-density recording media. Molecular-based materials open the possibility to design new tailor-made MNPs with variable composition and sizes, which benefit from the intrinsic properties of these materials. Before their implementation in real devices is reached, a precise organization on surfaces and a reliable characterization and manipulation of their individual magnetic behavior are required. In this paper, it is demonstrated how molecular-based MNPs are accurately organized on surfaces and how the magnetic properties of the individual…

Materials scienceNanoelectronicsMiniaturizationNanoparticleMagnetic nanoparticlesGeneral Materials ScienceNanotechnologyGeneral ChemistryMagnetic force microscopeCondensed Matter PhysicsCharacterization (materials science)Magnetic fieldGeomagnetic reversalParticle & Particle Systems Characterization
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Photo-induced magnetic bistability in a controlled assembly of anisotropic coordination nanoparticles.

2011

International audience; Anisotropic coordination nanoparticles of the photomagnetic network Cs(I)(2)Cu(II)(7)[Mo(IV)(CN)(8)](4) are obtained through a surfactant-free high-yield synthetic procedure in water. These particles are organised as Langmuir-Blodgett films with a preferential orientation of the nano-objects within the film that exhibit a magnetic bistability below 20 K with a very large coercivity due to an efficient photo-transformation.

Materials scienceCondensed matter physics010405 organic chemistryMetals and AlloysNanoparticleNanotechnologyGeneral Chemistry[CHIM.MATE]Chemical Sciences/Material chemistryCoercivityOrientation (graph theory)010402 general chemistry01 natural sciencesCatalysis0104 chemical sciencesSurfaces Coatings and FilmsElectronic Optical and Magnetic MaterialsMagnetic bistabilityMaterials ChemistryCeramics and CompositesAnisotropy
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Patterning of Magnetic Bimetallic Coordination Nanoparticles of Prussian Blue Derivatives by the Langmuir–Blodgett Technique

2012

We report a novel method to prepare patterns of nanoparticles over large areas of the substrate. This method is based on the adsorption of the negatively charged nanoparticles dispersed in an aqueous subphase onto a monolayer of the phospholipid dipalmitoyl-l-α-phosphatidylcholine (DPPC) at the air-water interface. It has been used to prepare patterns of nanoparticles of Prussian blue analogues (PBA) of different size (K(0.25)Ni[Fe(CN)(6)](0.75) (NiFe), K(0.25)Ni[Cr(CN)(6)](0.75) (NiCr), K(0.25)Ni[Co(CN)(6)](0.75) (NiCo), Cs(0.4)Co[Cr(CN)(6)](0.8) (CsCoCr), and Cs(0.4)Co[Fe(CN)(6)](0.9) (CsCoFe)). The behavior of DPPC monolayer at the air-water interface in the presence of the subphase of P…

Prussian blueAqueous solutionBrewster's angleMaterials scienceNanoparticle02 engineering and technologySurfaces and Interfaces010402 general chemistry021001 nanoscience & nanotechnologyCondensed Matter Physics01 natural sciencesLangmuir–Blodgett film0104 chemical sciencesCrystallographychemistry.chemical_compoundsymbols.namesakeAdsorptionchemistryMonolayerElectrochemistrysymbolsGeneral Materials Science0210 nano-technologyBimetallic stripSpectroscopyLangmuir
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