A5017552090- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Solid-state spectroscopy and crystallography
- Ferroelectric and Piezoelectric Materials
- Glass properties and applications
- Perovskite Materials and Applications
- Organic and Molecular Conductors Research
- Nonlinear Optical Materials Research
- Dielectric materials and actuators
- Acoustic Wave Resonator Technologies
- Material Dynamics and Properties
- Crystal Structures and Properties
- Metal-Organic Frameworks: Synthesis and Applications
- Multiferroics and related materials
- Luminescence Properties of Advanced Materials
- Chemical Thermodynamics and Molecular Structure
- Optical and Acousto-Optic Technologies
- Polymer Nanocomposites and Properties
- Conducting polymers and applications
- Crystallography and molecular interactions
- Mineralogy and Gemology Studies
- Nuclear materials and radiation effects
- Crystal structures of chemical compounds
- Magnetic Properties and Synthesis of Ferrites
- Electromagnetic wave absorption materials
Wrocław University of Science and Technology
2016-2025
AGH University of Krakow
2018-2025
University of Science and Technology
2019
Institute of Experimental Physics of the Slovak Academy of Sciences
2017-2018
Wroclaw University of Applied Informatics "Horizon"
2017
Institute of Physics
2005-2015
Czech Academy of Sciences, Institute of Physics
2013
University of Wrocław
2005
Perovskite-like materials exhibit desirable photophysical and electric properties that make them suitable for a remarkable breadth of applications in electronics physics. In this contribution, we report on the multiphase ferroelectric ferroelastic phenomena pyrrolidinium-based hybrid metal–organic material: (C4H8NH2)3[Sb2Cl9]. The title compound is first pyrrolidinium derivative within halobismuthates(III) haloantimonates(III) families featured by property. From structural point view,...
The (C2H5NH3)2[BiBr5] (EBB) crystals adopt the one-dimensional (1D) polymeric anionic form [BiBr5]∞2-, which is preferred by halobismuthates(III) exhibiting polar properties and realized in R2MX5 stoichiometry. Differential scanning calorimetry dilatometric measurements reveal reversible structural phase transitions: at 160 K (phase I → II) 120 II III). resolved crystal structures of EBB show centrosymmetric space group (Aeam), (Pca21) II, (Aea2) III. presence dielectric hysteresis loops...
Novel room-temperature ferroelectric crystals with complex sequences of phase transitions.
A brief description of the thermal, structural and dielectric properties bis(ethylammonium) pentachlorobismuthate(<sc>iii</sc>) ferroelectric with<italic>P</italic><sub>s</sub>that equals to 1.4 μC cm<sup>−2</sup>at 180 K is presented.
Highly stable ferroelectrics with reversible high-temperature phase transitions and switchable nonlinear optical behaviour.
Organic-inorganic hybrid compounds based on quinuclidinium and metal bromides, (C7H14N)2MBr4 (M = Co, Mn, Cd), have been synthesized. Differential scanning calorimetry measurements indicate that all undergo a reversible phase transition at 251 K (Co), 205 (Mn), 363 (Cd) upon heating. The respective temperature dependences of the dielectric permittivity reveal anomalies, confirming occurrence transitions. Although crystals are isostructural room temperature, as confirmed by X-ray diffraction...
Herein, a multi-phase ferroelectric and ferroelastic pyrrolidinium-based organic–inorganic hybrid (C<sub>4</sub>H<sub>8</sub>NH<sub>2</sub>)<sub>2</sub>[SbCl<sub>5</sub>] is presented.
The preparation of materials featuring more than one ferroelectric phase represents a promising strategy for controlling electrical properties arising from spontaneous polarization, since it offers an added advantage temperature-dependent toggling between two different states. Here, we report on the discovery unique ferroelectric-ferroelectric transition in diisopropylammonium tetrabromocadmate (DPAC, (C6H16N)2[CdBr4]) with Tc value 244 K, which is continuous nature. Both phases crystallize...
Dielectric properties of porous glass nanocomposites with TGS crystals embedded into six matrices average pore size from 5 to 312 nm were investigated in the temperature range 280 380 K at selected frequencies. The results are discussed based on effect particle phase transition nanocomposites. Temperature-size diagram composites was derived. Non-monotonic character temperature-driven (Tp) decreasing determined. nature Tp variation can be ascribed size-effect theoretically predicted by Zhong...
We report the synthesis and characterization of iron-bearing sodium borosilicate glasses with an Fe<sub>2</sub>O<sub>3</sub>content lower than 10 mol%.
A novel photoluminescent–ferroelectric crystal of (C<sub>4</sub>H<sub>10</sub>N)<sub>2</sub>[Cd<sub>2</sub>I<sub>6</sub>] (<bold>PCdI</bold>) has been obtained and characterized.
Results of the Differential Scanning Calorimetry (DSC) studies porous glasses filled by KNO3 ferroelectric in wide temperature range are presented. Anomalous heat capacity potassium nitrate confined nanoscale with two different radius pore 23 and 160nm show that phase I-III transition was slightly affected particle size, whereas III-II significantly decreased. During heating, II-I increased up to 12.5°C comparing bulk material. The lowering size reduced I–liquid temperature.
A multiphase, low-temperature ferroelectric of haloantimonate(<sc>iii</sc>) with a unique R<sub>5</sub>M<sub>2</sub>X<sub>11</sub> composition and <italic>P</italic><sub>s</sub> about 3 μC cm<sup>−2</sup> resulting from the ‘order–disorder’ ‘displacive’ molecular mechanism is successfully synthesized characterized.
Inorganic–organic hybrid QMnCl (Q = quinuclidinium) crystals were synthesized and characterized. The X-ray variable-temperature IR/Raman analysis demonstrate that the undergo a reversible structural phase transition, which originates from an order–disorder process is related to dynamics of organic Q cation. Dielectric function measurements disclose switchability between low ("OFF") high ("ON") dielectric states centered at around 285 K. Owing remarkable temperature-dependent function, this...
An influence of the size effect on phase transition temperature in potassium dihydrogen phosphate (KDP)-porous glass nanocomposites was studied this work. Results dielectric measurements a wide range for KDP crystals embedded porous glasses are presented. The shift toward higher temperatures observed with mean value pore 312 and 160 nm, whereas smaller sizes (71 23 nm) decreased. dependence values pores dimensions KDP-porous is experimental evidence showing non-monotonical character...
We report a metal–organic material of the following formula [<bold>Dabco</bold>H<sub>2</sub><sup>2+</sup>]·CrCl<sub>3</sub>(H<sub>2</sub>O)<sub>3</sub>·2(Cl<sup>−</sup>) (<bold>Dabco</bold>H<sub>2</sub><sup>2+</sup> = C<sub>6</sub>H<sub>14</sub>N<sub>2</sub><sup>2+</sup>, diprotonated 1,4-diazabicyclo[2.2.2]octanium).
Water-presence dependent switchable ferroelectricity was discovered in the hybrid organic-inorganic zinc oxalate 1D coordination polymer (DABCOH2)[Zn(C2O4)2]·3H2O (DZnOH, where DABCOH2: diprotonated 1.4-diazoniabicyclo[2.2.2]octane). The compound undergoes a reversible para-ferroelectric phase transition at 207 K from room temperature centrosymmetric I (space group P21/n) to low-temperature non-centrosymmetric II P21). microscopic mechanism of is directly associated with reconstruction...
We report the first example of 1D multiferroic homometallic oxalate, which exhibits ferroelectric phase transition around 219 K and a long-range antiferromagnetic ordering below 4 K.