A5038398829- Hydrogen Storage and Materials
- Rare-earth and actinide compounds
- Magnetic Properties of Alloys
- Ferroelectric and Piezoelectric Materials
- Multiferroics and related materials
- Microwave Dielectric Ceramics Synthesis
- Magnetic and transport properties of perovskites and related materials
- X-ray Diffraction in Crystallography
- Thermodynamic and Structural Properties of Metals and Alloys
- Liquid Crystal Research Advancements
- Metallurgical and Alloy Processes
- Inorganic Chemistry and Materials
- Magnetism in coordination complexes
- Crystallization and Solubility Studies
- Muon and positron interactions and applications
- nanoparticles nucleation surface interactions
- Advanced NMR Techniques and Applications
- Metal-Organic Frameworks: Synthesis and Applications
- Nonlinear Optical Materials Research
- High-pressure geophysics and materials
- Material Dynamics and Properties
- Radioactive element chemistry and processing
- Chemical Thermodynamics and Molecular Structure
- Boron and Carbon Nanomaterials Research
- Geology and Environmental Impact Studies
AGH University of Krakow
2001-2024
Jagiellonian University
2024
Institute of Nuclear Physics, Polish Academy of Sciences
2012-2021
Polish Academy of Sciences
2008-2012
Krakow Cardiovascular Research Institute
2010
Institute for Energy Technology
2007
Kielce University of Technology
2005
Institute of Metallurgy and Materials Science
2002
Methanol adsorption into the porous 2D bimetallic coordination network {[Ni(cyclam)]3[W(CN)8]2}n (cyclam = 1,4,8,11-tetraazacyclotetradecane) causes significant modification of its structure and magnetic properties. Fully reversible transformations between three states network: anhydrous, hydrated methanol-modified are observed with transition to ordered state at Tc equal 4.9 K, 8.3 K 11.4 respectively. All phases have a metamagnetic character but one most easily turns ferromagnetic shows...
Abstract X‐ray diffraction measurements were carried out on nine members of the isothiocyanatobiphenyl homologous series (nBT) in their smectic E (SmE) phase, with aim estimating layer thickness and deriving orthorhombic unit cell parameters for SmE phase. The data obtained are discussed relation to molecular reorientation motion around short axis that Keywords: diffractionsmectic phasepacking parametermolecular Acknowledgements Financial support from Polish Ministry Sciences grant no. 1...
Using a polyamine cation tetrenH55+ (tetren = tetraethylenepentaamine), we tailored the dynamic layered material (tetrenH5)1.6{CoII(H2O)2[MIV(CN)8]}4·xH2O (1, M W, x 12; 2, Mo, 11.2). 1 and 2 consist of strongly corrugated two-dimensional (2D) cyano-bridged monolayers {CoII(H2O)2[MIV(CN)8]}n2n– square grid topology stacked in an alternate manner with cationic layers H2O molecules. The observed single-crystal-to-single-crystal (SCSC) transformation is due to reversible dehydration respective...
In this paper results of new far-infrared and middle-infrared measurements (wavenumber range 4000cm-1 - 100cm-1) in the temperature from 300K to 8K CoFe2O4 ceramic are presented. The bands positions their shapes same wide range. quality sample was investigated by X-ray, EDS EPMA studies. reveals cubic structure (Fd-3m) 85K 360 K without any traces distortion. On current level knowledge polycrystalline does not exhibit phase transition 8 300 K.
The impedance spectrum of hexagonal SrMnO3, rhombohedral BaMnO3 and orthorhombic Ba0.5Sr0.5MnO3 ceramics, synthesized by conventional high-temperature method, was studied in a wide temperature frequency range. complex plots Z″ versus Z′ pointed to two contributions originating from grains grain boundaries. parameters electric equivalent circuit were calculated. semicircles related the boundary are located at lower side due higher resistivity capacity ceramics is characterized lowest...
Results of the dielectric and X-ray studies long-alkyl-chain members (n = 11, 12) two homologous series: nBT (4-n-alkyl--4 -isothiocyanato-biphenyl) nCHBT (4-trans-4 -n-alkyl-cyclohexyl--isothiocyanato-benzene) in their liquid crystalline phases are presented.These compounds exhibit different polymorphisms: nematic phase for nCHBTs smectic E A nBTs.The measurements were performed a wide frequency range 1 kHz-3 GHz.The layer thickness orthorhombic unit cell parameters determined using small...
A lead-free solid solution Ba0.80Sr0.20Ti0.75Zr0.25O3 was prepared by a conventional technology. The structure and morphology of investgated samples were characterised X-ray diffraction (XRD) scanning electron microscopy (SEM). studies electric conductivity performed depending on temperature frequency measuring field. activation energy calculated from the Arrhenius plots.
Dielectric properties of BaTiO3(BT), BaTiO3+0.1wt.%MnO2(BTMn) and BaTiO3+0.1 wt.%Fe2O3 (BTFe) solid solution was investigated. The effects substitution on the microstructure electric BaTiO3 samples were studied by performing X-ray diffraction measurements. analysis shows formation single-phase compound with a tetragonal structure at room temperature. SEM microphotographs exhibit uniform distribution grains. (a real part electrical permittivity(□ε') an imaginary modulus (M")) investigated in...
Abstract The results of X-ray studies the nine members (4 ÷ 12) 4-bromobenzylidene-4′-alkyloxyaniline homologous series (nBBAA) in smectic B (SmB) and A (SmA) phases are presented. Interestingly, no SmC phase was identified. thickness layers SmA SmB estimated showing unexpectedly that it is bigger than SmB. For phase, orthorhombic unit cell parameters were determined as a function temperature. obtained data discussed relation to rotational dynamics. Keywords: liquid crystalssmectic BSchiff...
The fast developing field of molecule-based magnets involving organic and coordination chemistry provides the physicist with a multitude novel compounds unprecedented structure. magnetic structure ${\text{Cu}}_{4}(\text{tetren}){[\text{W}{(\text{CN})}_{8}]}_{4}$ $(\mathbf{1})$ was shown to consist weakly coupled double layers. By contrast, in structurally similar compound ${\text{Cu}}_{2+x}{\text{Cu}}_{4}{[\text{W}{(\text{CN})}_{8}]}_{4}$ $(\mathbf{2})$ free spaces between layers are filled...
(Bi1/2Na1/2)(Mn1/2Nb1/2)O3 (BNMNO) ceramics were sintered at ambient air. XRD test exhibited coexistence of phases. The permittivity and conductance measured radio frequencies. Activation energy values estimated as 0.38 eV. Electronic structure was simulated for BNMNO also BiMnO3 (BMO) the reference. ab initio calculations performed within DFT using LCAO with localized basis set in form spherical functions implemented SIESTA 3.0 code together a spin polarization. An gap ideal BMO lattice to...