A5090425691- Magnetic and transport properties of perovskites and related materials
- Rare-earth and actinide compounds
- Shape Memory Alloy Transformations
- Magnetic Properties of Alloys
- Heusler alloys: electronic and magnetic properties
- Iron-based superconductors research
- Advanced Condensed Matter Physics
- Intermetallics and Advanced Alloy Properties
- Magnetic Properties and Applications
- High-pressure geophysics and materials
- Physics of Superconductivity and Magnetism
- Thermal Expansion and Ionic Conductivity
- Theoretical and Computational Physics
- Advanced Thermoelectric Materials and Devices
- Topological Materials and Phenomena
- Metallic Glasses and Amorphous Alloys
- Multiferroics and related materials
- Phase-change materials and chalcogenides
- Graphene research and applications
- Inorganic Chemistry and Materials
- Solid-state spectroscopy and crystallography
- Surface Roughness and Optical Measurements
- Advanced Welding Techniques Analysis
- Ferroelectric and Piezoelectric Materials
- 2D Materials and Applications
Czech Academy of Sciences, Institute of Physics
2015-2024
Czech Academy of Sciences
2017-2024
Centre National de la Recherche Scientifique
2014-2019
Université Grenoble Alpes
2014-2019
Institut Néel
2014-2019
Czech Academy of Sciences, Institute of Plasma Physics
2013-2016
Charles University
2009-2014
Institute of Physics of the Slovak Academy of Sciences
2010
Evolution of magnetism in single crystals the van der Waals compound $\mathrm{V}{\mathrm{I}}_{3}$ external pressure up to 7.3 GPa studied by measuring magnetization and ac magnetic susceptibility is reported. Four phase transitions, at ${T}_{1}=54.5\phantom{\rule{0.16em}{0ex}}\mathrm{K}, {T}_{2}=53\phantom{\rule{0.16em}{0ex}}\mathrm{K}, {T}_{\mathrm{C}}=49.5\phantom{\rule{0.16em}{0ex}}\mathrm{K}$, ${T}_{\mathrm{FM}}=26\phantom{\rule{0.16em}{0ex}}\mathrm{K}$, respectively, have been observed...
A thorough study of ${\mathrm{EuZn}}_{2}{\mathrm{P}}_{2}$ single crystals, which were grown from Sn flux, was performed using both bulk (heat capacity, ac susceptibility, dc magnetization, electrical resistivitivity, magnetoresistance) and microscopic (M\"ossbauer spectroscopy) techniques. Electrical resistance magnetic susceptibility measured also under high pressure conditions (up to 19 9.5 GPa, respectively). Further insight into electronic properties phonons is provided by ab initio...
External pressure suppresses the ferromagnetism of localized Cr 3d electron moments in van der Waals insulator CrBr3, which cannot be explained without considering a dramatic pressure-induced crystal or electronic structure change. We addressed this issue by conducting parallel experimental investigation single crystals magnetic and structural properties using magnetization, X-ray diffraction, Raman spectroscopy measurements. Ab initio DFT calculations atomistic simulations...
A system for direct measurements of the magneto-caloric effect (MCE) exploits a rapid transport sample into or from magnetic field in permanent Halbach-type (1 T) superconducting (4.7 magnets. Time dependence induced changes temperature, ΔT(t), is detected directly by differential Cu-Constantan-Cu micro-thermocouples with time steps 300 ms. placed inside an evacuated simple LN2 cryostat either totally isolated (adiabatic conditions) partly connected copper holder (non-adiabatic conditions)....
A comprehensive study of magnetocrystalline anisotropy a layered van der Waals ferromagnet $\mathrm{V}{\mathrm{I}}_{3}$ was performed. We measured angular dependences the torque and magnetization with respect to direction applied magnetic field within basal $ab$ plane general orthogonal $ab$, respectively. twofold butterflylike signal detected by in plane. This symmetry remains conserved throughout all regimes as well through known structural transition down lowest temperatures. The maximum...
We have performed a quantum-mechanical study of series stoichiometric Ni2MnSn structures focusing on pressure-induced changes in their magnetic properties. Motivated by the facts that (i) our calculations give total moment defect-free higher than experimental value 12.8% and (ii) state is predicted to be more sensitive hydrostatic pressures seen measurements, focused role point defects, particular Mn-Ni, Mn-Sn Ni-Sn swaps Ni2MnSn. For most defect types we also compared states with both...
The magnetism and transport properties were studied for Laves (Hf,Ta)Fe2 itinerant-electron compounds, which exhibit a temperature-induced first-order transition from the ferromagnetic (FM) to antiferromagnetic (AFM) state upon heating. At finite temperatures, field-induced metamagnetic phase between AFM FM has considerable effects on of these model compounds. A large negative magnetoresistance about 14% is observed in accordance with transition. magnetic diagram determined Hf1−xTaxFe2...
Magnetization and specific-heat measurements on a $\mathrm{UIrS}{\mathrm{i}}_{3}$ single crystal reveal Ising-like antiferromagnetism below ${T}_{\mathrm{N}}=41.7\phantom{\rule{0.16em}{0ex}}\mathrm{K}$ with the easy magnetization direction along $c$ axis of tetragonal structure. The antiferromagnetic ordering is suppressed by magnetic fields $>{H}_{\mathrm{c}}$ (${\ensuremath{\mu}}_{0}{H}_{\mathrm{c}}=7.3\phantom{\rule{0.16em}{0ex}}\mathrm{T}$ at 2 K) applied axis. first-order...
In this paper, we report the results of a high pressure study itinerant 5f-electron ferromagnet UCoGa. The work is focused on probing expected ferromagnet-to-paramagnet quantum phase transition induced by and general features P-T(-H) diagram. Diamond anvil cells were employed to measure magnetization electrical resistivity under pressures up ∼ 10 GPa. At ambient pressure, UCoGa exhibits collinear ferromagnetic ordering uranium magnetic moments μU 0.74μB (at 2 K) aligned along c-axis...
Pressurizing strategically selected compositions of the $\mathrm{EuC}{\mathrm{u}}_{2}{(\mathrm{G}{\mathrm{e}}_{1\ensuremath{-}x}\mathrm{S}{\mathrm{i}}_{x})}_{2}$ series affords an opportunity for gaining microscopic insight into ground-state properties and interplay between magnetism valence fluctuations across a quantum critical point. This is investigated by way systematic $^{151}\mathrm{Eu}$ M\"ossbauer spectroscopy measurements on $x=0$ $x=0.5$ in series, pressurized up to 7 GPa...
We have performed an ab initio study of disordered ferrimagnetic Ni1.9375Mn1.5625Sn0.5 martensite. Employing the supercell approach combined with special quasi-random structure concept for modeling states we determined thermodynamic, magnetic, structural, elastic and vibrational properties studied material. Its atomic magnetic configuration is found to exhibit a pressure-induced increase total moment, i.e. moment increases decreasing volume. This peculiar trend revealed despite fact that...