Research Laboratory of the Physics of Active Dielectric Crystals
The staff of the Research Laboratory of the Physics of Active Dielectric Crystals (RLPADC) are engaged in the development and comprehensive study of the structure and properties of functional materials for defense and civilian applications. The research is conducted within the framework of the scientific school “Physics of Active Dielectric Crystals,” founded in 1988 by Professor A. Yu. Kudzin.
Technological developments at the RLPADC focus on:
- the growth, using the Czochralski method, of complex-oxide crystals, including scintillators Bi₄Ge(Si)₃O₁₂; acousto-optic crystals TeO₂, PbMoO₄, and Pb₂MoO₅; pyroelectrics Pb₅Ge₃O₁₁; photorefractive materials Bi₁₂Ge(Si)O₂₀, BaTiO₃, LiNbO₃, and KNbO₃; relaxor ferroelectrics Pb₃MgNb₂O₉ and NaBiTi₂O₆; weakly polar ferroelectrics Li₂Ge₇O₁₅; and others;
- the development of amorphous and nanostructured glass-ceramic dielectric materials;
- the deposition of thin films, multilayer structures, quantum-confined semiconductor and dielectric structures, and superlattices.
The main research methods employed at the laboratory include:
- X-ray phase analysis;
- differential scanning calorimetry;
- dielectric and impedance spectroscopy;
- optical spectroscopy;
- electron paramagnetic resonance (EPR).
Research Projects Conducted at the RLPADC over the Past Five Years
| Project Code | Project Title | Period |
|---|---|---|
| 0124U000524 | “Functional Materials Based on Crystals, Glasses, and Nanocomposites of Complex Oxides,” applied research | 2024–2026 |
| 0124U000346 | “Acousto-Optic Cells for Optoelectronic Devices for High-Precision Weapon Guidance and Jam-Resistant Communication Systems,” research and development (experimental development) | 2024–2025 |
| 0123U101854 | “Crystals, Glass-Ceramics, and Glasses of Complex Oxides for Dual-Use Technology,” applied research | 2023–2025 |
| 0122U001228 | “Functional Materials Based on Complex Oxides for Defense and Civilian Applications,” applied research | 2022–2023 |
| 0120U102239 | “Active Dielectrics Based on Complex Oxides for Functional Electronics,” applied research | 2020–2022 |
Contract Research for Ukrainian Industrial Enterprises
The laboratory also carries out research and development commissioned by Ukrainian industrial enterprises under contractual agreements:
“Development of a Method for Growing Paratellurite Acousto-Optic Crystals for Acousto-Optic Cells,” commissioned by LLC “Krys-Tech”; period: 25 January 2021 – 30 June 2021.
“Growth of Single Crystals Using the Czochralski Method for Acousto-Optic Cells,” commissioned by LLC “Krys-Tech”; period: 15 July 2021 – 30 June 2022.
“Development of Technical and Methodological Approaches to the Vacuum Treatment of Components of Electrical Energy Conversion Devices,” commissioned by LLC “Dniproenerhotehnolohiya”; period: 1 September 2021 – 31 December 2022.
“Growth of Experimental Single Crystals and Fabrication of Experimental Light and Sound Guides for Acousto-Optic Cells,” commissioned by LLC “Krys-Tech”; period: 18 August 2022 – 31 December 2022.
“Development of a Method for Diffusion Bonding of Single-Crystal Blocks Made of TeO₂ and LiNbO₃,” commissioned by Individual Entrepreneur Koptiev; period: 22 March 2023 – 31 December 2023.
“Establishment of Technical Vacuum Treatment Parameters for the Assembly of Electrical Energy Conversion Devices,” commissioned by LLC “Dniproenerhotehnolohiya”; period: 1 September 2023 – 31 August 2024.
“Growth of TeO₂ Acousto-Optic Crystals with a Diameter Exceeding 120 mm and Investigation of the Optical Quality of the Resulting Single-Crystal Samples,” commissioned by Individual Entrepreneur Koptiev; period: 15 May 2024 – 31 December 2024.
“Determination of Vacuum Treatment Parameters for the Fabrication of Electrical Energy Conversion Devices,” commissioned by LLC “Dniproenerhotehnolohiya”; period: 1 September 2024 – 31 August 2025.
“Optimization of Technological Procedures for the Vacuum Treatment of Electrical Energy Conversion Devices,” commissioned by LLC “Dniproenerhotehnolohiya”; period: 2 December 2025 – 31 March 2026.
Researchers:
Mykhailo Volnianskyi
Doctor of Physical and Mathematical Sciences, Professor, Senior Researcher
Solid-state physics, crystal growth, dielectric spectroscopy
ORCID: 0009-0009-2024-2617
E-mail: mdvoln@i.ua
Tetiana Panchenko
Doctor of Physical and Mathematical Sciences, Professor, Leading Researcher
Solid-state physics, optical, thermally stimulated, and dielectric spectroscopy
ORCID: 0009-0001-2143-7311
E-mail: panchtv141@gmail.com
Mykhailo Koptiiev
Researcher
Solid-state physics, crystal growth, dielectric spectroscopy
ORCID: 0009-0004-8956-4802
E-mail: davurika@gmail.com
Vasyl Sidak
Candidate of Physical and Mathematical Sciences, Researcher
Solid-state physics, dielectric and impedance spectroscopy
ORCID: 0000-0002-2691-1836
E-mail: vasylsidak@gmail.com
Tetiana Bochkova
Candidate of Physical and Mathematical Sciences, Senior Researcher, Associate Professor, Leading Researcher
Solid-state physics, crystal growth, optical spectroscopy
ORCID: 0000-0002-4785-0841
E-mail: tmbochkova@gmail.com
Contacts:
Tel.: +380 56 776 82 03
E-mail: ndi.etim.dnu@gmail.com