A5073458483- Rare-earth and actinide compounds
- Magnetic Properties of Alloys
- Iron-based superconductors research
- Magnetic and transport properties of perovskites and related materials
- Luminescence Properties of Advanced Materials
- Advanced Condensed Matter Physics
- Inorganic Chemistry and Materials
- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Thermal Expansion and Ionic Conductivity
- Atomic and Subatomic Physics Research
- Transition Metal Oxide Nanomaterials
- Radiation Detection and Scintillator Technologies
- Catalysis and Oxidation Reactions
- Phase-change materials and chalcogenides
- Advanced Chemical Physics Studies
- Crystal Structures and Properties
- Silicon Effects in Agriculture
- High-pressure geophysics and materials
- Ultrasonics and Acoustic Wave Propagation
- Catalytic Processes in Materials Science
- Optical and Acousto-Optic Technologies
- Electrical and Thermal Properties of Materials
- Ga2O3 and related materials
- Surfactants and Colloidal Systems
Institute of Physics
2014-2024
University of Silesia in Katowice
2014-2024
Silesian University in Opava
1995-2004
Centre National de la Recherche Scientifique
1997
Institut Néel
1996-1997
CEA Paris-Saclay - Etablissement de Saclay
1997
CEA Paris-Saclay
1997
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
1997
The structural, magnetic electrical and thermoelectric properties of heavy rare-earth ternary compounds RNiSb were investigated.Except Yb--based compound (and nonmagnetic Lu), all are low temperature antiferromagnets.YbΝi0.9Sb reflects some mixed valence behaviour.Magnitude the resistivity indicates tlat investigated semimetals or high doped semiconductors.
Abstract Monocrystalline fibres of undoped PrAlO3 and PrAlO3:0.1 Mn, have been grown by the pulling-down method under nitrogen atmosphere. The as-grown crystal doped with Mn had a visible brown core surrounded green ring, whereas this effect was weaker for PrAlO3. A coloration caused presence Pr4+ ions. ions confirmed XPS magnetic studies. chemical analysis showed increased concentration oxygen in crystals core. most probable valency manganese is Mn4+. It located Al3+ sites.
Lattice parameters, magnetic susceptibility, electronic structure, distribution of the elements and thermal properties were examined for single crystals Lu3Al5O12 (LuAG) (Lu1−xYx)3Al5O12 (LuYAG) (x = 0.25, 0.50, 0.75), either pure or doped with Pr optionally co-doped Mo, which are predicted as potential fast efficient scintillators. It was indicated that specific cage-like surrounding rare earth aluminum ions built from oxygen proper doping can influence conductivity emission process....
Vascular plants are able to conduct biomineralization processes and collect synthesized compounds in their internal tissues or deposit them on epidermal surfaces. This mechanism protects the plant from fluctuations of nutrient levels caused by different supply demand for them. The biominerals reflect both metabolic characteristics a vascular species environmental conditions habitat. SEM/EDX method was used examine surface cross-sections Calamagrostis epigejos Phragmites australis leaves...
Abstract Manganese‐doped yttrium aluminum perovskite (YAP) nanocrystalline samples of 0.05 at%, 0.2 at% and the reference single crystal predicted 0.02 Mn, 0.02% Si concentration in YAP were investigated by following methods: X‐ray powder diffraction, scanning electron microscopy, EPR, SQUID XPS. These examinations revealed that obtained material was not phase trace Y 3 Al 5 O 12 (YAG) appeared. As is evident from EPR studies, manganese all occupying an site valence remains as Mn 2+ . The...
Bi 2 O 3 –Ag raw materials were prepared using different synthetic routes: mortar and pestle ball‐milling. They later used as starting for the micro‐pulling down method. After down, composites annealed under vacuum, H air atmospheres. All samples characterized by following methods: X‐ray diffraction (XRD), scanning electron microscopy (SEM/EDX) photoelectron spectroscopy (XPS). The SEM/EDS XPS analyses showed that ball‐milling had a much more homogenous distribution of silver. investigations...
With increasing amount of nickel in the Gd7Pd3-xNix series, unit cell volume decreases due to difference between atomic radius Pd and Ni but type crystal structure is preserved. The paper presents X-ray diffraction, Scanning Electron Microscopy with Energy Dispersive Spectrometer, Transmission Microscopy, AC DC magnetic susceptibility magnetocaloric examinations series. substitution into position causes decrease Curie temperature. Moreover, dispersion observed AC-susceptibility at different...
Abstract Gd 7 Pd 3 intermetallic compound was prepared as slowly cooled polycrystal and rapidly (rc) casts. The polycrystalline samples were obtained by melting in an induction coil. rc-cast sample means of a mould casting technique. characterized X-ray diffraction, SQUID magnetometry scanning electron microscopy order to elucidate the Hopkinson effect magnetocaloric properties relation technological aspects. investigated ferromagnetic system is sensitive grain size. decreases with decrease...
Sub-microcrystalline samples of Pb1-3x□xNd2xWO4 (PbNdW) solid solution (x = 0.0098, 0.0455, 0.0839, and 0.1667, where □ denotes vacant sites) prepared by citrate-nitrate combustion method were pressed sintered at 1050°C to a ceramic form. Therefore, it is expected that the ceramics under study display also unique properties new potential applications. This paper presents results structural, microscopic, magnetic, electrical, as well broadband dielectric spectroscopy measurements PbNdW with...
Abstract The process of sol‐gel synthesis was applied to obtain the LiMn 2 O 4 nanopowders. samples were characterized by following methods: scanning electron microscopy (SEM/EDX), X‐ray photoelectron spectroscopy (XPS), SQUID magnetometry and paramagnetic resonance (EPR). Chemical composition, oxidation state manganese magnetic properties determined. SEM images showed grains in form nanocrystals or larger conglomerates, depending on process. From XPS analysis chemical formulas examined...
Abstract The Pechini sol-gel method was applied to obtain LiMn 2–x T x O 4 (T = Ni, Fe; 0.1 0.5) nanopowders. Crystal and electronic structures, chemical composition magnetic properties of the materials were characterized by X-ray diffraction, XPS, SEM/EDX microscopy, prompt gamma-ray activation analysis (PGAA), Mössbauer spectroscopy susceptibility, respectively. XRD measurements showed that Ni single phase for 0.2. Three samples with higher content contained some addition a second phase....