Physics of Dielectrics

HeadS

Adam Sieradzki
Adam Sieradzki

office: 437, A-1
phone: +48 71 320 29 55

Agnieszka Ciżman

office: 356B, A-1
phone: +48 71 320 36 14


Katarzyna Fedoruk-Piskorska
Katarzyna Fedoruk-Piskorska

office: 353, A-1

Liudmyla Filevska
Liudmyla Filevska

office: 438, A-1
phone: +48 71 320 33 64

Marek Gusowski

office: 18/11, A-1
phone: +48 71 320 30 90

Ewelina Jach
Ewelina Jach

office: 356B, A-1
phone: +48 71 320 36 14

Andrzej Nowok
Andrzej Nowok

office: 353, A-1

Paulina Peksa-Jasińska
Paulina Peksa-Jasińska (on leave)

office: 353, A-1

PhD Students

Adam Bartosiewicz


Urszula Dieu


Kamila Rajfur


Michał Winkiel



research

The Advanced Dielectrics Research Group specializes in investigating the dielectric and thermodynamic properties of hybrid organic-inorganic materials, liquids, and ceramics. Our research employs techniques such as Differential Scanning Calorimetry (DSC), Broadband Dielectric Spectroscopy (BDS), pyroelectric current measurements, and ferroelectric hysteresis loop analysis.

Our primary goal is to understand the mechanisms of phase transitions in the studied materials and to comprehensively characterize their dielectric properties. We focus on dipolar relaxation processes driven by the reorientational motions of molecular dipoles, as well as electrical conductivity arising from the translational movement of charge carriers.

By integrating experimental methods, we aim to deepen the understanding of structural phase transitions and dielectric behavior in various materials, thus contributing to the advancement of experimental physics and materials engineering.


 

Differential Scanning Calorimetry

Model: Mettler Toledo DSC 1 and DSC 3
Applications: crystallization, glass transition, heat capacity, kinetics
Temperature range: -150 °C – 500 °C
Sensor output: Heat Flow
Sensitivity: 0.1mW
Samples: solid state, liquid

Broadband Dielectric Spectroscopy (BDS)

Model: Novocontrol Technologies Alpha-A analyzer
Temperature controller: Novo-Control Quattro system
Temperature range: -150 °C – 500 °C optional -240 °C – 300 °C
Frequency range: 1Hz – 1MHz
Samples: solid state (single crystal, polycrystal, composite), liquid

Ferroelectric Tester

Model: Precision Premier II
Temperature range: -200 °C – 500 °C
Maximum voltage: 500 V
Frequency range: 0.03 Hz – 2 KHz
Sample: single crystal, thin film

Hand-made Pyroelectric Current Tester

Electrometer: Keithley 617
Current resolution: 0.1 pA
Temperature controller: MercuryiTC
Temperature range: -200 °C – 500 °C
Sample: solid state, thin film

2024

Near-bandgap emission in [HOC2 H 4NH3 ] 2 PbI4 perovskite under hydrostatic pressure: emission of a free exciton and a polaronic exciton
Filip Dybała, Robert Kudrawiec, Maciej P. Polak, Artur P. Herman, Adam Sieradzki and Mirosław Mączka
Mater. Adv., 2025, 6, 569

Phase Diagram and Dielectric Response of Hybrid Lead Halide Hollow Perovskites: A Universal Behavior of Molecular Cation Mixing
Gabrielius Rimkus, Sergejus Balčiu̅nas, Maciej Ptak, Szymon Smółka, Vytautas Klimavič ius, Daria Szewczyk, Adam Sieradzki, Vidmantas Kalendra, Ju̅ras Banys, Mirosław Mączka, and Mantas Šimėnas
Chem. Mater. 2024, 36, 7397−7405

Mechanism of isosymmetric polar order-disorder phase transition in pyroelectric [CH3CH2NH3]2NaGa(HCOO)6 double perovskite
M. Ptak, A. Kabański, B. Dziuk, S. Balciunas, G. Usevicius, J. K. Zaręba, J. Banys, M. Simenas, A. Sieradzki, D. Stefańska
J Mater Chem C Mater 12, 4663–4675 (2024)

2023

Magnetoelectric, spectroscopic, optical and elastic properties of Co-doped BaTiO3 ceramics
R. Bujakiewicz-Koronska, Ł. Gondek, L. Vasylechko, M. Balanda, E. Juszynska-Galazka, M. Galazka, D. Majda, W. Piekarczyk, A. Zywczak, A. Cizman, M. Sitarz, P. Jelen, W. Salamon, P. Czaja, J. Jedryka, K. Koronski, A. Kalvane, K. Gornicka, E. Markiewicz, S. Yamashita, Y. Nakazawa
J Alloys Compd 946, 169344 (2023)

Computer simulations as an effective way to distinguish supramolecular nanostructure in cyclic and phenyl alcohols
J. Grelska, K. Jurkiewicz, A. Nowok, S. Pawlus
Phys Rev E 108, 024603 (2023)

Molecular Dynamics and Near-Tg Phenomena of Cyclic Thioethers
H. Hellwig, A. Nowok, P. Peksa, M. Dulski, R. Musioł, S. Pawlus, P. Kuś
M Int J Mol Sci 24, 17166 (2023).

Fundamental understanding of the thermal properties of amorphous epoxy resin coatings filled with quartz-feldspar powder sourced from quarry waste
K. Krzywiński, Ł. Sadowski, K. Fedoruk, A. Sieradzki
Appl Surf Sci 614, 156133 (2023)

Broadband yellow and white emission from large octahedral tilting in (110)-oriented layered perovskites: imidazolium-methylhydrazinium lead halides
D. Drozdowski, K. Fedoruk, A. Kabanski, M. Maczka, A. Sieradzki, A. Gagor
J Mater Chem C Mater 11, 4907–4915 (2023)

All-Inorganic Micrometric CsPbBr3:Yb3+ Powder as a Multifunctional Material for Photovoltaics and Optical Thermometry: Structural and Optical Characterization
M. Stefanski, B. Bondzior, T. Gzyl, E. Zielony, M. Betke, A. Sieradzki, M. Ptak
Adv Opt Mater 11, 2301672 (2023)

Influence of Bromination on the Phase Transitions, Structural, Phonon, and Optical Properties Explored for 2-Bromoethylammonium Bismuth Bromide
M. Ptak, B. Dziuk, S. Smółka, J. Osmólska, M. Stefanski, A. Łukowiak, A. Sieradzki
Journal of Physical Chemistry C 127, 22204–22211 (2023)

2022

Mixology of MA1- xEAxPbI3Hybrid Perovskites: Phase Transitions, Cation Dynamics, and Photoluminescence
M. Šimėnas, S. Balčiū Nas, A. Gągor, A. Pieniążek, K. Tolborg, M. Kinka, V. Klimavicius, Š. N. Svirskas, V. Kalendra, M. Ptak, D. Szewczyk, A. P. Herman, R. Kudrawiec, A. Sieradzki, R. Grigalaitis, A. Walsh, M. Mączka, J. R. Banys
Chemistry of Materials 34, 10104–10112 (2022)

2PbCl4, a Two-Dimensional Perovskite with Polar and Modulated Phases
K. Fedoruk, D. Drozdowski, M. Maczka, J. K. Zareba, D. Stefańska, A. Gagor, A. Sieradzki
Inorg Chem 61, 15520–15531 (2022)

Effect of Dimensionality on Photoluminescence and Dielectric Properties of Imidazolium Lead Bromides
S. Smółka, M. Mączka, D. Drozdowski, D. Stefańska, A. Gągor, A. Sieradzki, J. K. Zarȩba, M. Ptak
Inorg Chem 61, 15225–15238 (2022)

Getting the details right: optical, dielectric, and vibrational outcomes of structural phase transition in one-dimensional pyrrolidinium lead iodide and the role of defects
K. Fedoruk, S. J. Zelewski, J. K. Zaręba, M. Ptak, M. Mączka, A. Sieradzki
J Mater Chem C Mater 10, 10519–10529 (2022)

Thermal wear of epoxy composite modified with rutile titanium dioxide
K. Krzywiński, A. Sieradzki, Ł. Sadowski, A. Królicka, C. Chastre
Compos Struct 282, 115127 (2022)

Structural phase transitions in novel hydrogen-bonded cyanide-based crystal of [C4H8NH2]2[(H3O)Co(CN)6]
C. S. de Medeiros, M. Ptak, A. Gągor, A. Sieradzki
J Mol Struct 1252, 132143 (2022)

Optical properties of Nd3+ ions in (Ca4Nb2)1-xNd2xO9–6x solid solution
B. Pilarek, M. Ptak, D. Stefańska, A. Watras, P. Peksa, A. Sieradzki, I. Szczygieł, J. Hanuza
J Mol Struct 1250, 131715 (2022)

Luminescence and Dielectric Switchable Properties of a 1D (1,1,1-Trimethylhydrazinium)PbI3Hybrid Perovskitoid
J. A. Zienkiewicz, K. Kałduńska, K. Fedoruk, A. J. Barros Dos Santos, M. Stefanski, W. Paraguassu, T. M. Muzioł, M. Ptak
Inorg Chem 61, 20886–20895 (2022)

Hybrid Organic-Inorganic Crystals of [Methylhydrazinium]MIICl3(MII= Co, Ni, Mn)
J. A. Zienkiewicz, M. Ptak, D. Drozdowski, K. Fedoruk, M. Stefanski, A. Pikul
Journal of Physical Chemistry C 126, 15809–15818 (2022)

Three-Dimensional Methylhydrazinium Lead Halide Perovskites: Structural Changes and Effects on Dielectric, Linear, and Nonlinear Optical Properties Entailed by the Halide Tuning
D. Drozdowski, A. Gągor, D. Stefańska, J. K. Zarȩba, K. Fedoruk, M. Mączka, A. Sieradzki
Journal of Physical Chemistry C 126, 1600–1610 (2022)

Simple Rules for Complex Near-Glass-Transition Phenomena in Medium-Sized Schiff Bases
A. Nowok, W. Cieślik, J. Grelska, K. Jurkiewicz, N. Makieieva, T. Kupka, J. Alemán, R. Musioł, S. Pawlus
Int J Mol Sci 23, 5185 (2022)

More complex than originally thought: revisiting the origins of the relaxation processes in dimethylammonium zinc formate
P. Peksa, A. Nowok, F. Formalik, J. K. Zaręba, J. Trzmiel, A. Gągor, M. Mączka, A. Sieradzki
J Mater Chem C Mater 10, 6866–6877 (2022)

Glass-forming Schiff bases: Peculiar self-organizing systems with bifurcated hydrogen bonds
A. Nowok, W. Cieślik, M. Dulski, K. Jurkiewicz, J. Grelska, J. Alemán, R. Musioł, A. Z. Szeremeta, S. Pawlus
J Mol Liq 348, 118052 (2022)

Near-Infrared Phosphorescent Hybrid Organic-Inorganic Perovskite with High-Contrast Dielectric and Third-Order Nonlinear Optical Switching Functionalities
M. Mączka, A. Nowok, J. K. Zarȩba, D. Stefańska, A. Gągor, M. Trzebiatowska, A. Sieradzki
ACS Appl Mater Interfaces 14, 1460–1471 (2022)

Dielectric switching in correlation with the structural phase transitions in tetrapropylammonium perchlorate
M. Trzebiatowska, D. A. Kowalska, M. A. Gusowski, E. Jach, A. Ciżman
Physical Chemistry Chemical Physics 25, 1269–1278 (2022)

Controversy on the ferroelectricity in metal–formate frameworks
P. Peksa, A. Sieradzki
Lithuanian Journal of Physics 62, 195–205 (2022)