A5019442531- Physics of Superconductivity and Magnetism
- Rare-earth and actinide compounds
- Magnetic and transport properties of perovskites and related materials
- Multiferroics and related materials
- Magnetic Properties of Alloys
- Iron-based superconductors research
- Superconductivity in MgB2 and Alloys
- Advanced Condensed Matter Physics
- Ferroelectric and Piezoelectric Materials
- Magnetic Properties and Synthesis of Ferrites
- Magnetic properties of thin films
- Magnetic Properties and Applications
- Boron and Carbon Nanomaterials Research
- Dielectric properties of ceramics
- Magneto-Optical Properties and Applications
- Theoretical and Computational Physics
- Microwave Dielectric Ceramics Synthesis
- Superconducting Materials and Applications
- Iron oxide chemistry and applications
- Crystallization and Solubility Studies
- Aluminum Alloys Composites Properties
- Advancements in Battery Materials
- Inorganic Chemistry and Materials
- X-ray Diffraction in Crystallography
- Microstructure and mechanical properties
Institute of Molecular Physics of the Polish Academy of Sciences
2012-2022
Polish Academy of Sciences
2010-2019
Institute of Physics
2009
Universidade Federal de Goiás
2009
Universidade de Brasília
2009
École Nationale Supérieure d'Ingénieurs de Caen
2007
Laboratoire de Cristallographie et Sciences des Matériaux
2002-2007
Centre National de la Recherche Scientifique
2001-2007
Adam Mickiewicz University in Poznań
2006
Université de Caen Normandie
2005
Surface functionalization of a series nanosized iron oxide particles (average diameter around 6 nm) with oleic acid was realized in this study. The aim is to suspend the surface-functionalized nanoparticulated materials insulating mineral oil and evaluate their colloidal stability as function time. Nanoparticulated samples presenting stoichiometry close maghemite were obtained by oxidation freshly precipitated magnetite sample. Systematic variations observed Fe3+/Fe2+ ratio, average particle...
Abstract Two new ternary germanides Tb 2 Pt 1.2 Ge 2.8 , Dy 1.15 2.85 and one already known germanium Ho 1.1 2.9. were synthesized using an arc melting technique. The obtained samples investigated by powder x-ray diffraction, which indicated that all of them crystallized in a hexagonal structure with P 6/ mmm (no. 191) space group. This is disordered variant the AlB aristotype favors formation spin-glass-like state. physical properties examined measuring magnetic susceptibility, heat...
The $\mathrm{Ce}{\mathrm{Ni}}_{4}\mathrm{Al}$ compounds have been studied using the magnetic susceptibility, specific heat, electrical resistivity and x-ray photoemission spectroscopy (XPS) measurements. XPS experiments were supported by theoretical calculations employing TB LMTO method. estimation of hybridization, $\ensuremath{\Delta}$, between $f$-level conduction states was based on measurements $\mathrm{Ce}(3d)$ revealed a small value...
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We present precise measurements of the upper critical field $({H}_{c2})$ in recently discovered cobalt oxide superconductor. have found that has an unusual temperature dependence; namely, there is abrupt change slope ${H}_{c2}(T)$ a weak-field regime. In order to explain this result we derived and solved Gor'kov equations on triangular lattice. Our experimental results may be interpreted terms field-induced transition from singlet triplet superconductivity.
Bi1 − xLaxFeO3 single-phase solid solution with 0 ≤ x 0.3 was obtained by mechanochemical synthesis and characterized X-ray diffraction, FT NIR Raman spectroscopy magnetic studies. The nanocrystalline powders of rhombohedrally distorted perovskite structure R3c were studied 'as synthesized' mechanosynthesis after annealing at 500 °C for 1 h. annealing, which resulted in recrystallization the amorphous shell nanograins, found to modify external lattice modes Bi1−xLaxFeO3 changes temperature...
AbstractElectric, dielectric and magnetic properties of SrFe12O19 hexaferrite ceramics obtained from hydrothermally synthesized single-phase nanopowders were studied in wide temperature range. The effect space charge polarization, related to highly conducting grains with poor grain boundaries, was found be apparent at high temperatures low frequencies. activation energy relaxation the (Fe3+–Fe2+) dipoles boundary regions amount 0.20 eV for non-annealed increase 0.32 after thermal treatment....
The intermetallic germanide ${\mathrm{Gd}}_{2}{\mathrm{Pt}}_{1.1}{\mathrm{Ge}}_{2.9}$ was synthesized using an arc-melting method. crystal structure characterized powder x-ray diffraction, revealing a disordered ternary ${\mathrm{AlB}}_{2}$-type (space group $P6/mmm$, No. 191) with lattice parameters $a=4.2092(1)\phantom{\rule{0.16em}{0ex}}\AA{}$ and $c=4.0546(2)\phantom{\rule{0.16em}{0ex}}\AA{}$. Physical properties were investigated by magnetic susceptibility heat capacity measurements,...
The magnetic measurements of the Josephson critical field and intergranular currents are presented for Bi2223 compound. investigations prove that value is mainly dependent on current density. other factors like grain dimensions shapes, sample porosity density less important. relation between HcJ(Jc) well described within single junction model, Hcj∝JcλJ. temperature dependence HcJ can also be fitted according to model with a dependence, Jc∝(1-T/TcJ)α. versus almost linear indicating presence...