A5032891978- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Crop Yield and Soil Fertility
- Graphene research and applications
- Crystallography and molecular interactions
- Molecular Junctions and Nanostructures
- Wheat and Barley Genetics and Pathology
- Agriculture, Plant Science, Crop Management
- Magnetism in coordination complexes
- Agricultural Productivity and Crop Improvement
- Agriculture and Biological Studies
- Lanthanide and Transition Metal Complexes
- Nuclear Physics and Applications
- Agricultural economics and policies
- Quantum and electron transport phenomena
- Magnetic and transport properties of perovskites and related materials
- Electron Spin Resonance Studies
- Particle accelerators and beam dynamics
- Catalytic Processes in Materials Science
- Advanced NMR Techniques and Applications
- Nuclear and radioactivity studies
- Radiopharmaceutical Chemistry and Applications
- Nuclear reactor physics and engineering
- Nanomaterials for catalytic reactions
- Fusion materials and technologies
National High Magnetic Field Laboratory
2024-2025
Florida State University
2024-2025
Central European Institute of Technology
2020-2024
Brno University of Technology
2020-2024
University of Stuttgart
2016
Stuttgart Observatory
2016
Nuclear Research Institute Rez (Czechia)
1975
Czech Academy of Sciences, Nuclear Physics Institute
1968
Four pentacoordinate Co( ii ) based single ion magnets were prepared and their structural, spectral, static dynamic magnetic properties analysed in detail.
Attaining sub-Kelvin temperatures remains technologically challenging and often relies on the scarce resource 3He, unless employing adiabatic demagnetization refrigeration. Herein, active coolant typically consists of weakly coupled paramagnetic ions, whose magnetic interaction strengths are comparable in energy to relevant temperature regime cooling. Such interactions depend strongly inter-ion distances, fundamentally hindering realization dense coolants for We present a magnetically...
The synthesis of molecules with strong coupling between electronic and nuclear spins represents an important challenge in molecular quantum information science. Here, we report the characterization divalent lutetium metallocene complexes Lu(CpMe5)(CpiPr5) (CpMe5 = pentamethylcyclopentadienyl; CpiPr5 pentaisopropylcyclopentadienyl), Lu(CpiPr4Et)2 (CpiPr4Et ethyltetraisopropylcyclopentadienyl), Lu(CpiPr4)2 (CpiPr4 tetraisopropylcyclopentadienyl). structures these complexes, as determined...
Single ion magnet behaviour is reported for a mononuclear Mn(<sc>iii</sc>) with tridentate Schiff-base ligands revealing that the size of axial anisotropy highest to date.
Studying the properties of complex molecules on surfaces is still mostly an unexplored research area because deposition metal complexes has many pitfalls. Herein, we probed possibility to produce surface hybrids by depositing a Co(II)-based with chalcone ligands chemical vapor (CVD)-grown graphene wet-chemistry approach and thermal sublimation under high vacuum. Samples were characterized high-frequency electron spin resonance (HF-ESR), XPS, Raman spectroscopy, atomic force microscopy (AFM),...
Abstract The development of stable and reproducible inorganic pigments is noteworthy for industrial applications mainly considering more intense shades low toxicity. Among the various candidates to substitute non‐hazardous red yellow pigments, CeO 2 :Pr have been attracting attention because their opacity high‐temperature stability besides being environmental‐friendly health‐friendly. In this study, nanostructured samples were synthesized using polymeric precursor method structural optical...
Two tetracoordinate Co(<sc>ii</sc>)-based single-ion-magnets were synthesised and characterised by HF-ESR, XPS, UV-VIS with support of <italic>ab initio</italic> quantum calculations tested for drop-casting sublimation depositions thin films.
We present a theoretical and experimental study on tetracoordinate Co( ii )-based complexes featuring semi-coordination interactions. investigate their magnetic properties thin films formed by deposition onto graphene surfaces.
Abstract The opening of a quantum confinement gap in nanostructured graphene yields extremely sensitive photodetectors, with electrical noise equivalent power lower than 10 −15 W Hz −0.5 at temperatures below 3 K, for detection radiation very broad frequency range, including ultraviolet, visible and terahertz. Here we demonstrate the operation these detectors presence magnetic field as high 7 T, paving way to situ spectroscopy molecular nanomagnets.
Graphene-based hybrid material with array of copper(<sc>ii</sc>)-based quantum bits was prepared by a wet-chemistry protocol and characterised HF-ESR, XPS, Raman, AFM.
We present a proof-of-concept magnetic resonance detection of organic radical 2,2-diphenyl-1-picrylhydrazyl via nanostructured on-chip graphene quantum dot bolometer. In common electron paramagnetic setup, the microwave propagates from source into sample and back to detector. Yet, by using detection, it is possible skip whole arm and, thus, mitigate lab expenses on instrument cooling costs. The bolometric was demonstrated at frequency 151 GHz temperature 15 K.
Single-molecule magnets (SMMs) with chemically tailorable properties are potential building blocks for quantum computing, high-density magnetic memory, and spintronics.1 2 3,4 These applications require isolated or few molecules on substrates, but studies of SMMs have mainly focused bulk crystals. Moreover, fabrication SMM-based devices electrical detection the SMM state still coveted milestones that so far been achieved double-decker rare-earth phthalocyanines at temperatures below 1 K.5-8...
Attaining very-low temperatures remains technologically challenging and often relies on the scarce resource 3He, unless employing adiabatic demagnetisation refrigeration. Herein, active coolant typically consists of weakly coupled paramagnetic ions, whose magnetic interaction strengths are comparable in energy to relevant temperature regime cooling. Such interactions depend strongly inter-ion distances, fundamentally hindering realisation dense coolants for sub-Kelvin We present a...
Introduction Among the products of irradiation natural molýbdenum by deuterons with energies up to 13 MeV, means γ and X-ray speclrometry were identified these radlonudldes: 99Nb, 92mNb, 95m+gNb 96Nb, 99Mo, 101Mo, 92Tc, 93m+gTc, 94m+g^>Tc, 95m+gTc, 96Tc, 97mTc, 99mTc,101Tc, 89Zr. With more intensive lines transitions 90Nb, 94m+gTc, 99Tc 97mTc accurate photon have been established for 1475.7 1520.5 keV 93Tc, 820.2 95mTc, 96.4 also absolute intensities emitted determined. By aluminium foils,...
Abstract Using chemical separations and radiometric measurements medium-half-life irradiation products of molybdenum with 12.5 MeV deuterons were determined (90Nb, 92Nb, 95mNb, 95Nb, 96Nb, 99Mo, 95mTc, 96Tc, 99mTc) as well thick target yields for some them: 92Nb (0.22 μCi/μAh), 95Nb(0.05 99Mo (64 95mTc(0.76 96Tc((62.5 μCi/μAh). Moreover isolation possibiities radioactive preparations from removed worn-cut parts the U-120 cycletron are discussed. Keywords: cyclotronsmolybdenum...
Es wurden die kurzlebigen Produkte der Kernreaktionen bei Bestrahlung von Chron mit 12,5-MeV-Deuteronen untersucht. Nachgewiesen 52mMn und 51Mn. Als Methoden γ-Spektrenmessung Halbwertzeitbestimmung benutzt. Auβerden Sättigungsaktivitäten pro Mikroampere (30,5 mCi/µA), 51Mn(4,1 mCi/µA) 52Mn (13,4 bestimmt. Zur Berechug totalen γ-Strahlungsintensität des Chromtargets für beliebige Bestrahlungs- Abklingzeiten werden eine Formel sowie ein Nomogramm zu inhrer Auswertung angegeben.
Abstract In the “Comment on article by Gonzaga et al . J Am Ceram Soc. 2020;103:6280‐6288”, Paparazzo argues that estimated value of Ce 3+ amount in our CeO 2 samples through X‐ray photoelectron spectroscopy (XPS) analysis is ~10% and there no dependence annealing temperature or Pr‐doping. However, a comparison XPS 3 d spectra with reference presented author reveals characteristics these higher at.%Ce being consistent values around 24%. Furthermore, intensity absorption region feature...
Graphene quantum dots and single molecule magnets are two different nanoscale materials that can be combined into hybrid devices with potential applications in spintronics computing.