Department of Dielectrics

Head of group

Dr. hab. Wojciech Medycki, Prof. IFM PAN
phone: +48 61 86 95 180, room: 266
e-mail: wojciech.medycki@ifmpan.poznan.pl

The group

Dr. Iwona Płowaś-Korus
phone: +48 61 86 95 272, room: 253
e-mail: iwona.plowas-korus@ifmpan.poznan.pl
Dr. Jolanta Świergiel
phone: +48 61 86 95 162, room: 228, 238
e-mail: jolanta.swiergiel@ifmpan.poznan.pl

Notable former group members

Prof. Dr. hab. Jan Jadżyn
M. Sc. Grzegorz Czechowski

The phase transitions in three compounds based on quinuclidinium involve distinct reorientation of Q cations and reorganization of hydrogen bonds for each compound.

E. Jach, D.A. Kowalska, M. Trzebiatowska, W. Medycki, A. Ostrowski, W. Bednarski, M.A. Gusowski, P. Staniorowski, A. Bartosiewicz, U. Dieu, A. Ciżman
Structural Diversity and Stability of Organic−Inorganic Hybrid Quinuclidine-Based Metal Bromides
Inorganic Chemistry, 64, 15, 7422−743 (2025)
Quenched-in disorder is responsible for the emergence of ferromagnetism in Ce(Fe_0.9Co_0.1)₂ compound. AFM and FM components are visible at low temperatures.

A. Musiał, M. Pugaczowa-Michalska, N. Lindner, Z. Śniadecki
Emergence of Ferromagnetic State Due to Structural Disorder in Pseudo-binary Ce(Fe_0.9Co_0.1)₂ Compound
Metallurgical and Materials Transactions A Volume 56, Issue 6 (2025)
The energy-dependent relaxation times of electrons and holes in Bi-Sb alloys provide critical insights for optimizing thermoelectric performance and represent a significant step toward high-efficiency p-type devices.

R. Orenstein, K Ciesielski, K. Synoradzki, J. Qu, F.A. Bipasha, L.C. Gomes, J.M. Adamczyk, S. Berger, E. Ertekin, E.S. Toberer
Complex thermoelectric transport in Bi-Sb alloys
Applied Phyics. Review 12, 011409 (2025)
Ferrimagnetic Tb/Co films patterned with Ga+ ions prove to be good substrates for magnetophoresis of superparamagnetic particles.

M. Urbaniak, D. Kiphart, M. Matczak, F. Stobiecki, G.D. Chaves-O’Flynn, P. Kuświk
Ferrimagnetic Tb/Co multilayers patterned by ion bombardment as substrates for magnetophoresis
Sci Rep 14, 23771 (2024)
Nonequilibrium responses determine the current covariance in Coulomb-coupled quantum dots.

T. Aslyamov, K. Ptaszyński, M. Esposito
Nonequilibrium Fluctuation-Response Relations: From Identities to Bounds
Physical Review Letter 134, 157101 (2025)
Effects of coupling between electrons and intramolecular vibrations (vibronic effects) in the IR spectra of (EDT-TTF-I₂)₂TCNQF_n (n = 0, 1, 2) donor-acceptor complexes

A. Frąckowiak, R. Świetlik, I. Olejniczak, O. Jeannin, M. Fourmigué
Electron–molecular vibration coupling in trimerized isostructural mixed-stack complexes (EDT-TTF-I₂)₂TCNQF_n (n=0, 1, 2)
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy Volume 329 (2025)
Relative fraction of rigid and fast-rotating imidazole forms and activation energy distribution for proton tautomerism.

I. Jankowska, M. Bielejewski, P. Ławniczak, R. Pankiewicz, J. Brus, J. Tritt-Goc
Cellulose nanofibers vs. cellulose nanocrystals: a comparative study on their influence on the properties of imidazole-doped proton-conducting nanocomposites
Cellulose, Volume 32 (2025)
Finite-size scaling of the heat current variance at the phase transition point in Curie-Weiss model attached to two heat baths.

K. Ptaszyński, M. Esposito
Critical heat current fluctuations in Curie-Weiss model in and out of equilibrium
Physical Review E 111, 034125 (2025)

More research highlights...

INNOTECH - In-Tech
PIHe3

Institute of Molecular Physics
Polish Academy of Sciences

ul. Mariana Smoluchowskiego 17
60-179 Poznań, Poland

phone.: +48 61 86 95 100
fax: +48 61 86 84 524
e-mail: office@ifmpan.poznan.pl

NIP: 777-00-20-870

A. Musiał, M. Pugaczowa-Michalska, N. Lindner, Z. Śniadecki
Emergence of Ferromagnetic State Due to Structural Disorder in Pseudo-binary Ce(Fe_0.9Co_0.1)₂ Compound
Metallurgical and Materials Transactions A Volume 56, Issue 6 (2025)
I. Jankowska, M. Bielejewski, P. Ławniczak, R. Pankiewicz, J. Brus, J. Tritt-Goc
Cellulose nanofibers vs. cellulose nanocrystals: a comparative study on their influence on the properties of imidazole-doped proton-conducting nanocomposites
Cellulose, Volume 32 (2025)
K. Ptaszyński, M. Esposito
Nonanalytic Landau functionals shaping the finite-size scaling of fluctuations and response functions in and out of equilibrium
Physical Review E 111, 044142 (2025)
A.R. Perayil, P. Kuświk, M. Urbaniak, F. Stobiecki, S. Akhundzada, A. Ehresmann, D. de las Heras, T.M. Fischer
Topological sorting of magnetic colloidal bipeds
Soft Matter, 21, 2716,(2025)
T. Aslyamov, K. Ptaszyński, M. Esposito
Nonequilibrium Fluctuation-Response Relations: From Identities to Bounds
Physical Review Letter 134, 157101,(2025)
E. Jach, D.A. Kowalska, M. Trzebiatowska, W. Medycki, A. Ostrowski, W. Bednarski, M.A. Gusowski, P. Staniorowski, A. Bartosiewicz, U. Dieu, A. Ciżman
Structural Diversity and Stability of Organic−Inorganic Hybrid Quinuclidine-Based Metal Bromides
Inorganic Chemistry, 64, 15, 7422−743 (2025)
A. Frąckowiak, R. Świetlik, I. Olejniczak, O. Jeannin, M. Fourmigué
Electron–molecular vibration coupling in trimerized isostructural mixed-stack complexes (EDT-TTF-I₂)₂TCNQF_n (n=0, 1, 2)
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy Volume 329 (2025)
D. Kiphart, M. Krupiński, M. Mitura-Nowak, P.P. Michałowski, M. Kowacz, M. Schmidt, F. Stobiecki, G.D. Chaves-O’Flynn, P. Kuświk
Origin of ion bombardment induced Tb oxidation in Tb/Co multilayers
Applied Surface Science Vol. 685, 15 March 2025, 162090 (2025)
K. Wang, S. Xu, D. Wang, Z. Kou, Y. Fu, M. Bielejewski, V. Montes-García, B. Han, A. Ciesielski, Y. Hou, P. Samorì
Supramolecular Engineering of Vinylene-Linked Covalent Organic Framework – Ruthenium Oxide Hybrids for Highly Active Proton Exchange Membrane Water Electrolysis
Advanced Materials Volume 37, Issue 11, 2417374 (2025)
K. Ptaszyński, M. Esposito
Critical heat current fluctuations in Curie-Weiss model in and out of equilibrium
Physical Review E 111, 034125 (2025)
R. Gieniusz, P. Gruszecki, J. Kisielewski, A.K. Dhiman, M. Matczak, Z. Kurant, I. Sveklo, U. Guzowska, M. Tekielak, M. Krawczyk, F. Stobiecki, A. Maziewski
Spin wave frequency hysteresis in Ir/Co/Pt multilayers with DzyaloshinskiiMoriya interaction
Phys. Rev. B 110, 184410 (2024)
M. Urbaniak, D. Kiphart, M. Matczak, F. Stobiecki, G.D. Chaves-O’Flynn, P. Kuświk
Ferrimagnetic Tb/Co multilayers patterned by ion bombardment as substrates for magnetophoresis
Sci Rep 14, 23771 (2024)
F. Farrokhza, N.C.X. Stuhlmuller, P. Kuswik, M. Urbaniak, F. Stobiecki, S. Akhundzada, A. Ehresmann, D. de las Heras, T.M. Fischer
Magnetic colloidal single particles and dumbbells on a tilted washboard moire´ pattern in a precessing external field
Soft Matter 20, 9312 (2024)
R. Orenstein, K Ciesielski, K. Synoradzki, J. Qu, F.A. Bipasha, L.C. Gomes, J.M. Adamczyk, S. Berger, E. Ertekin, E.S. Toberer
Complex thermoelectric transport in Bi-Sb alloys
Applied Phyics. Review 12, 011409 (2025)
A.M.E.B. Rossi, T. Märker, N.C.X. Stuhlmüller, P. Kuświk, F. Stobiecki, M. Urbaniak, S. Akhundzada, A.J. Vereijken, A. Ehresmann, D. de las Heras, T.M. Fischer
Topologically cloaked magnetic colloidal transport
Nature Communications 16, Article number: 1828 (2025)
S. Dudziak, J. Smoliński, A. Ostrowski, A. Szkudlarek, M. Marzec, K. Sokołowski, K. Sikora, A. Zielińska-Jurek
Opposite effect of the Cu photodeposition on the ∙OH generation and diclofenac degradation depends on the exposed anatase facet
Chemical Engineering Journal Volume 505, 1 February 2025, 159146

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Institute of Molecular Physics of the Polish Academy of Sciences

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