A5002340076- Rare-earth and actinide compounds
- Magnetic and transport properties of perovskites and related materials
- Magnetic Properties of Alloys
- Iron-based superconductors research
- Inorganic Chemistry and Materials
- Physics of Superconductivity and Magnetism
- Advanced Condensed Matter Physics
- Nuclear Materials and Properties
- High-pressure geophysics and materials
- Magnetic properties of thin films
- Thermodynamic and Structural Properties of Metals and Alloys
- Advanced Chemical Physics Studies
- Solid-state spectroscopy and crystallography
- Magnetism in coordination complexes
- Radioactive element chemistry and processing
- Theoretical and Computational Physics
- 2D Materials and Applications
- Topological Materials and Phenomena
- Organic and Molecular Conductors Research
- Intermetallics and Advanced Alloy Properties
- Magnetic Properties and Applications
- Quantum and electron transport phenomena
- Crystallization and Solubility Studies
- Heusler alloys: electronic and magnetic properties
- Semiconductor materials and interfaces
Charles University
2016-2025
Czech Academy of Sciences, Institute of Physics
2000-2023
Česká Zbrojovka (Czechia)
2014-2015
Fraunhofer Institute for Telecommunications, Heinrich Hertz Institute
2002-2009
Czech Academy of Sciences
1999-2008
Institute of Experimental Physics of the Slovak Academy of Sciences
2006
Slovak Academy of Sciences
2006
Lviv University
2005
Hiroshima University
1999-2002
Czech Academy of Sciences, Institute of Plasma Physics
2001
The magnetocaloric effect of orthorhombic Gd(OH)CO<sub>3</sub>has been experimentally studied, which exhibits −Δ<italic>S</italic><sub>m</sub>up to 66.4 J kg<sup>−1</sup>K<sup>−1</sup>(355 mJ cm<sup>−3</sup>K<sup>−1</sup>) for Δ<italic>H</italic>= 7 T and<italic>T</italic>= 1.8 K.
The heavy fermion paramagnet UTe
The comprehensive study reported herein provides compelling evidence that anion templates are the main driving force in formation of two novel nanoscale lanthanide hydroxide clusters, {Gd38(ClO4)6} (1) and {Gd48Cl2(NO3)} (2), characterized by single-crystal X-ray crystallography, infrared spectroscopy, magnetic measurements. {Gd38(ClO4)6}, encapsulating six ClO4(-) ions, features a cage core composed twelve vertex-sharing {Gd4} tetrahedrons one Gd⋅⋅⋅Gd pillar. When Cl(-) NO3(-) were...
The magnetocaloric effect of an inorganic framework material with repeating GdF<sub>3</sub> units has been studied using isothermal magnetization and heat capacity measurements.
The existence of the V3+-ion orbital moment is an open issue nature magnetism in van der Waals ferromagnet VI3. huge magnetocrystalline anisotropy conjunction with significantly reduced ordered magnetic compared to spin-only value provides strong but indirect evidence a large V moment. We used unique capability X-ray circular dichroism determine component total and provide direct proof exceptionally sizable V3+ ion Our ligand field multiplet simulations XMCD spectra synergy results DFT...
The unconventional superconductor UTe <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" overflow="scroll"> <mml:msub> <mml:mrow/> <mml:mn>2</mml:mn> </mml:msub> </mml:math> exhibits numerous signatures of spin-triplet superconductivity—a rare state matter which could enable quantum computation protected against decoherence. possesses a complex phase landscape comprising two magnetic field-induced superconducting phases, metamagnetic transition to field-polarized...
<a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:msub><a:mtext>UTe</a:mtext><a:mn>2</a:mn></a:msub></a:math> is a spin-triplet superconductor candidate for which high quality samples with long mean free paths have recently become available, enabling quantum oscillation measurements to probe its Fermi surface and effective carrier masses. It has been reported that <c:math xmlns:c="http://www.w3.org/1998/Math/MathML"...
Abstract Two kinds of inorganic gadolinium(III)‐hydroxy “ladders”, [2× n ] and [3× ], were successfully trapped in succinate (suc) coordination polymers, [Gd 2 (OH) (H O)] ⋅ H O ( 1 ) 6 8 5 O) 4 ), respectively. Such polymers could be regarded as alternating inorganic–organic hybrid materials with relatively high density. Magnetic heat capacity studies reveal a large cryogenic magnetocaloric effect (MCE) both compounds, namely (Δ =70 kG) 42.8 J kg −1 K for complex 48.0 . The the density is...
Abstract Mn 3 Sn has recently attracted considerable attention as a magnetic Weyl semimetal exhibiting concomitant transport anomalies at room temperature. The topology of the electronic bands, their relation to ground state and nonzero Berry curvature lie heart problem. examination full Hamiltonian reveals otherwise hidden aspects these unusual physical properties. Here, we report spin wave spectra measured over wide momentum—energy range by inelastic neutron scattering technique. Using...
Abstract The transformation of Mn II glycolates (glc) between the three‐dimensional coordination polymer [Mn(glc) 2 ] n ( 1 ) and discrete mononuclear phase (H O) can be reversibly switched by water molecules, which dramatically change magnetocaloric effect (MCE) from maximum 6.9 J kg −1 K in to 60.3 . This case example reveals that magnetic coupling on MCE plays a dominant role over other factors such as density for 3d‐type refrigerants.
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...
Below a critical temperature <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" overflow="scroll"> <mml:msub> <mml:mi>T</mml:mi> <mml:mi>c</mml:mi> </mml:msub> </mml:math> , superconductors transport electrical charge without dissipative energy losses. The application of magnetic field <mml:mi>B</mml:mi> generally acts to suppress up some strength at which <mml:mrow> <mml:mo stretchy="false">→</mml:mo> </mml:mrow> 0 K. Here, we investigate field–induced...
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...
The magnetization and susceptibility of single-crystalline UCoAl were measured under high pressures to P=1.2 GPa. A sharp metamagnetic transition was observed only in magnetic fields along the c axis. critical field is ${B}_{c}$=0.65 T at P=0 GPa, which increases with pressure temperature. for ambient shows a broad maximum ${T}_{\mathrm{max}}$=20 K. value ${T}_{\mathrm{max}}$ pressure. theory itinerant has been generalized case anisotropic spin fluctuations. dependence inverse...
The results of a single-crystal x-ray-diffraction study the evolution crystal structures $\mathrm{V}{\mathrm{I}}_{3}$ with temperature an emphasis on phase transitions are presented. Some related specific-heat and magnetization data included. existence room-temperature trigonal structure $R\overline{3}$ (148) has been confirmed. Upon cooling, undergoes structural transition to monoclinic at ${T}_{\mathrm{s}}\ensuremath{\sim}79\phantom{\rule{0.16em}{0ex}}\mathrm{K}$. ${T}_{\mathrm{s}}$ is...
The tetragonal intermetallic compounds ${\mathrm{U}}_{2}$${\mathrm{Pd}}_{2}$In and ${\mathrm{U}}_{2}$${\mathrm{Pd}}_{2}$Sn have been studied by means of magnetic susceptibility, magnetization, specific heat, electrical resistivity, x-ray- neutron-diffraction techniques. order antiferromagnetically at 36 41 K, respectively, enhanced electronic specific-heat coefficients \ensuremath{\gamma} 393 203 mJ/mol f.u. ${\mathrm{K}}^{2}$, respectively. At low temperature, the nearest-neighbor U-U...
The ternary compound UNiAl, crystallizing in the ZrNiAl-type structure, is an itinerant antiferromagnet with magnetic moments of less than 0.8${\mathrm{\ensuremath{\mu}}}_{\mathit{B}}$ per U atom and a high \ensuremath{\gamma} value 164 mJ/mol ${\mathrm{K}}^{2}$. anisotropic response electronic properties to field closely connected huge uniaxial anisotropy, observed not only magnetically ordered state, but also paramagnetic region. origin this anisotropy can be found strongly hybridization....
Giant magnetoresistance (GMR) effects are observed in several classes of bulk magnetic materials. The resistance changes at metamagnetic transitions connected with reorientation 4f moments only moderate due to the relatively weak coupling and conduction electrons. Much larger GMR can be achieved by mechanisms involving d states (RhFe, RCo2), though most spectacular variations U-intermetallic antiferromagnets. This phenomenon interpreted as Fermi surface gapping (due superzones) and/or...