A5016541316- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Magnetism in coordination complexes
- Advanced NMR Techniques and Applications
- Molecular spectroscopy and chirality
- Superconducting Materials and Applications
- Lanthanide and Transition Metal Complexes
- Porphyrin and Phthalocyanine Chemistry
- Spectroscopy and Quantum Chemical Studies
- Magneto-Optical Properties and Applications
- Superconductivity in MgB2 and Alloys
- Electron Spin Resonance Studies
- Synthesis and Properties of Aromatic Compounds
- Magnetic Field Sensors Techniques
- Magnetic and transport properties of perovskites and related materials
- Spacecraft and Cryogenic Technologies
- Physics of Superconductivity and Magnetism
- Advanced Thermodynamic Systems and Engines
Université Grenoble Alpes
2019-2024
Laboratoire National des Champs Magnétiques Intenses
2019-2024
Centre National de la Recherche Scientifique
2019-2024
Institut National des Sciences Appliquées de Toulouse
2019-2024
Université Toulouse III - Paul Sabatier
2022
Here we report the first experimental observation of magneto-chiral dichroism (MChD) detected through light absorption in an enantiopure lanthanide complex. The P and M enantiomers [YbIII((X)-L)(hfac)3] (X = P, M; L 3-(2-pyridyl)-4-aza[6]-helicene; hfac 1,1,1,5,5,5-hexafluoroacetylacetonate), where chirality is held by helicene-based ligand, were studied near-infrared spectral window. When irradiated with unpolarized a magnetic field, these chiral complexes exhibit strong MChD signal (gMChD...
Here, we report the molecular self-assembly of hydroxido-bridged {Ln5Ni6} ((Ln3+ = Dy3+, Y3+) metal clusters by reaction enantiopure chiral ligands, namely, (R/S)-(2-hydroxy-3-methoxybenzyl)-serine), with NiII and LnIII precursors. Single-crystal diffraction analysis reveals that these compounds are isostructural sandwich-like 3d–4f heterometallic showing helical chirality. Direct current magnetic measurements on {Dy5Ni6} indicates ferromagnetic coupling between DyIII centers, whereas those...
Here we report on the strong magneto-chiral dichroism (MChD) detected through visible and near-infrared light absorption up to 5.0 T {Er5Ni6} metal clusters obtained by reaction of enantiopure chiral ligands NiII ErIII precursors. Single-crystal diffraction analysis reveals that these compounds are 3d–4f heterometallic clusters, showing helical chirality. MChD spectroscopy a high gMChD dissymmetry factor ca. 0.24 T–1 (T = 4.0 K, B 1.0 T) for 4I13/2 ← 4I15/2 magnetic-dipole allowed electronic...
Magnetic materials are widely used for many technologies in energy, health, transportation, computation, and data storage. For the latter, readout of magnetic state a medium is crucial. Optical based on magneto-optical Faraday effect was commercialized but soon abandoned because need complex circular polarization-sensitive readout. Combining chirality with magnetism can remove this obstacle, as chiral exhibit magneto-chiral dichroism, differential absorption unpolarized light dependent their...
Here we report on magneto-chiral dichroism (MChD) detected with visible light the chiral Prussian Blue Analogue [MnII(X-pnH)(H2O)][CrIII(CN)6]·H2O (X = S, R; pn 1,2-propanediamine). Single crystals suitable for magneto-optical measurements were grown starting from enantiopure ligands. X-ray diffraction and magnetic confirmed 2D-layered structure of material, its absolute configuration, ferrimagnetic ordered state below a critical temperature TC 38 K. Absorption MChD spectra measured between...
Magnetochiral dichroism (MChD) is a nonreciprocal manifestation of light-matter interaction that can be observed in chiral magnetized systems. It features differential absorption unpolarized light depending on the relative orientation magnetic field and wavevector absolute configuration system. The relevance this effect for optical readout data calls complete understanding microscopic parameters driving MChD with an easy-accessible nondamaging source, such as visible light. For purpose, here...
Here we report magneto-chiral dichroism (MChD) detected through visible and near-infrared light absorption of a chiral dysprosium(III) coordination polymer. The two enantiomers [DyIII(H6(py)2)(hfac)3]n [H6(py)2 = 2,15-bis(4-pyridyl)ethynylcarbo[6]helicene; hfac- 1,1,1,5,5,5-hexafluoroacetylacetonate], where the chirality is provided by functionalized helicene ligand, were structurally, spectroscopically, magnetically investigated. Magnetic measurements reveal slow relaxation magnetization,...
The union between magnetism and chirality is finally validated.
The optical and magneto-chiral properties of a 3D chiral molecular ferrimagnet based on Cr III Mn II building blocks have been investigated to unveil the role structural dimensionality dichroism.
The physical and electrical properties of four recent REBCO CC were assessed: 1) THEVA; 2) Shanghai Supercond. Technology; 3) Faraday Factory Japan; 4) Fujikura. For estimating their properties, the delamination strength each tape was checked by removing a polyimide ribbon sticked on cutting after pre-tinning. Their windability uniformity thickness also investigated through our metal-as-insulation winding process. evaluating critical current measured at 4.2 K under various external magnetic...
The design and operation of resistive high field magnets require research development in materials science, power supply engineering instrumentation. Recently, their energy efficiency has become a very important concern. In our contribution we report on recent advances an efficient use the 24 MW at French National High Magnetic Field Laboratory Grenoble (LNCMI) that can reduce consumption by up to 20%, for given user experiment. This saving is possible due special architecture LNCMI magnets....