(in Odolanów)

Head: doc. dr hab. ZBIGNIEW TRYBUŁA

The activity of our group concentrates on low temperature (down to 0.3K) studies:

• Dielectric investigation of the coexistence of paraelectric/proton- glass and ferroelectric

(antiferroelectric) order in proton glass system Rb_1-x(NH4)_xH₂AsO₄ (RADA).

• EPR and dielectric study of nominally pure and doped incipient ferroelectric KTaO₃.

• Thermal conductivity of ferroic crystals in the temperature range from 0.3K to 300K.

• Phase transitions and low temperature properties of fullerides: solid C₆₀ and C₇₀ and thin films of C₆₀ and C₇₀, studied by Electron Paramagnetric Resonance and dielectric methods.

• EPR of fullerene ions and superconductivity in potassium and rubidium intercalated fullerenes.

• SE/X Electron Paramagnetic Resonance Spectrometer,
• Helium 3 cryostat ( 0.3K to 300K ),
• Superconducting Magnet,
• 4275A Multi- Frequency LCR Meter, and 1689M Gen. Rad. RLC Digibridge.

• Institute for Conensed Matter Physics of the Ukrainian Academy of Sciences, Lviv, Ukraine.

• Institute for Problems of Materials Science Ukrainian Academy of Sciences, Kiev, Ukraine.

• Department of Physics, Ben-Gurion University of the Negev, Be’er-Sheva, Israel.
• University of Rennes, France.

• Department of Physics, Montana State University, Bozeman, Montana, U.S.A.

• Institute of Physics, Crystal Physics Division, Adam Mickiewicz University, Poznań, Poland.

1. M. Krupski, J. Stankowski, L. Piekara-Sady and W. Kempiński

EPR evidence of F.C.C.-S.C. Phase Transition in Fullerene C₆₀ under Hydrostatic Presure.

phys. stat. solidi (b) 212, 47 (1999)

2. Z. Trybuła, J. Stankowski

Coexistence of paraelectric/proton-glass and ferroelectric (antiferroelectric) orders in Rb_1-x(NH₄)_xH₂AsO₄ crystals.

Condensed Matter Physics, 1 No2(14), 311 (1998)

3. P. Piskunowicz, Z. Tylczyński, S. Mielcarek, M. Bromberek, B. Mróz, Z. Trybuła

Thermal Conductivity of Gd₂(MoO₄)₃ Crystal From 0.5 to 80K.

Ferroelectric Letters, 24, 147 (1998)

4. J.Stankowski, L.Piekara-Sady, W.Kempiński, O.Huminiecki, P.B.Sczaniecki

EPR of Graphite and Fullerenes.

Fullerene Science and Technology 5, 1203 (1997)

5. W. Kempiński, P. Scharff, J. Stankowski, L. Piekara-Sady, Z. Trybuła

EPR of fullerene ions and superconductivity in K-fullerides at low doping levels.

Physica C 274, 232 (1997)

6. W.Kempiński, L.Piekara-Sady, J.Stankowski, P.Scharff

Kinetics of C₆₀ Intercalation and Unstable Superconducting Phase of K_xC₆₀.

Molec. Phys. Rep. 15/16, 177 (1996)

7. W.Kempiński, J.Stankowski

Two Superconducting Phases Related to Different Stoichiometry of K-Doped C₆₀.

Solid. State Commun. 97, 1079 (1996)

8. V. B. Kapustianik, S. A. Sveleba, R. Tchukvinskyi, Yu. Korchak, V. Mokryi, I. I. Polovinko, and Z. Trybuła

Dielectric Properties and Electric Conductivity of Dimethylammonium Tetrachlorcolbaltate Ferroelectric Crystals.

phys.stat.sol. (a) 151, 481 (1995)

9. W.Kempiński, J.Stankowski

EPR and MMMA Study of C₆₀ Upon K-Doping.

Acta Phys. Polon. 88, 549 (1995)

10. W.Kempiński, J.Stankowski

Microwave Measurements of Low Temperatures properties of (N₂)Ar_1-x Solid Solutions.

Fiz. Niz. Temp. 20, 97 (1995) and Low Temp. Phys. 21(1), 74 (1995)

11. S.K.Hoffmann, W.Hilczer, W.Kempiński, J.Stankowski

Electron Spin Echo Studies of Impurity Centers in Polycrystalline C60..

Solid State Commun. 3, 197 (1995)

12. L.Piekara-Sady, A.V.Il’yasov, V.Morozov, J.Stankowski, W.Kempiński, and Z. Trybuła

Simultaneous Electrochemical and Electron Paramagnetic Resonance Studies of Fullerene Anion Radicals C₆₀^1- and C₆₀^3-.

Appl. Magn. Reson. 9, 367 (1995)

13. W. Kempiński, J. Stankowski, Z. Trybuła and Sz. Łoś

EPR Evidence of the Low Temperature Phase Transition in C₆₀.

Apll. Magn. Reson. 8, 127 (1995)

14. Z. Trybuła, Sz. Łoś, C.S. Tu, and V.H.Schmidt

Ferroelectric and proton glass coexictence region in K_0.77(NH₄)_0.23H₂AsO₄ detected by complex permittivity measurements.

J.Phys.: Condens. Matter 7, 947 (1995)

15. S.A. Sveleba, V.B. Kapustianik I.I. Polovinko, A. S. Krochuk, M. Bublyk, V.S. Zhmurko, and Z. Trybuła