Personal Page of Ihor Pylyuk

 Address: Dr.Sci. Ihor V. Pylyuk Institute for Condensed Matter Physics of the National Academy of Sciences of Ukraine 1 Svientsitskii Str. 79011 Lviv, Ukraine   E-Mail:    URL: http://ph.icmp.lviv.ua/~piv/ Phone: +38 032 2761978   Fax: +38 032 2761158

A. BIOGRAPHICAL INFORMATION

PERSONAL DATA

 Name Pylyuk First name Ihor Date of birth February 18, 1957 Nationality Ukrainian Marital status Married Children Daughters: Oryslava Pylyuk (1981), Iryna Pylyuk (1983) Present professional position Leading researcher

BIOGRAPHICAL REFERENCES

• Who's Who in Science and Engineering - 2006-2007, 9th Edition (published by Marquis Who's Who, USA, 2006)
• Who's Who in Science and Engineering - 2008-2009, 10th Edition (published by Marquis Who's Who, USA, 2007)
• Who's Who in the World - 2008, 25th Edition (published by Marquis Who's Who, USA, 2007)

 M.Sc. 1980 Faculty of Physics of the Lviv State University, Lviv Ph.D. 1992 Lviv State University, Lviv; confirmed by the Highest Qualification Committee of the USSR, Moscow Thesis title: "Calculation of thermodynamic functions of the three-dimensional Ising model and the investigation of their dependence on the microscopic parameters of the system" Thesis supervisors: Prof.I.Yukhnovskii, Dr.M.Kozlovskii Senior research worker 2003 Institute for Condensed Matter Physics of the National Academy of Sciences of Ukraine, Lviv; confirmed by the Highest Qualification Committee of Ukraine, Kyiv Doctor of Sciences in Physics and Mathematics 2010 Institute for Condensed Matter Physics of the National Academy of Sciences of Ukraine, Lviv; confirmed by the Highest Qualification Committee of Ukraine, Kyiv Thesis title: "Microscopic description of the critical behaviour of three-dimensional Ising-like systems using the non-Gaussian fluctuation distributions" Thesis adviser: Prof.M.Kozlovskii

C. PROFESSIONAL BACKGROUND

EMPLOYMENT

 1980-1985 Engineer, Computer Centre of Lviv State University, Lviv 1985-1988 Senior engineer, Computer Centre of Lviv State University, Lviv 1988-1990 Senior engineer, Academy of Sciences of the Ukrainian SSR, Division of the Institute for Theoretical Physics, Lviv 1990-1993 Junior researcher, Academy of Sciences of Ukraine, Institute for Condensed Matter Physics, Lviv 1993-1996 Researcher, National Academy of Sciences of Ukraine, Institute for Condensed Matter Physics, Lviv 1996-2011 Senior researcher, National Academy of Sciences of Ukraine, Institute for Condensed Matter Physics, Lviv 2011-present Leading researcher, National Academy of Sciences of Ukraine, Institute for Condensed Matter Physics, Lviv

PROFESSIONAL AFFILIATIONS AND ACTIVITIES

 1991-present Member, Ukrainian Physical Society 1994-present Member, Shevchenko Scientific Society

D. RESEARCH INTERESTS

• Statistical physics and thermodynamics; phase transitions and critical phenomena. Critical behaviour of three-dimensional Ising-like systems: Development of the microscopic theory in the formalism of the collective variables method using the non-Gaussian fluctuation distributions (universal and nonuniversal quantities; thermodynamic characteristics; scaling functions; critical amplitudes; corrections to scaling; order parameter; equation of state; influence of microscopic parameters of the system and of an external magnetic field). Theoretical description of the critical behaviour of fluid systems with allowance for the quartic distribution of order-parameter fluctuations

E. SOME INTERNATIONAL SYMPOSIA, WORKSHOPS AND CONFERENCES

(Titles of all meetings and symposia are put on full list)

F. SELECTED PUBLICATIONS

( Full list of 118 publications includes 1 monograph, 49 articles in journals and collections, 34 abstracts of meetings and symposia, 34 preprints)

MONOGRAPHS

1. I.R.Yukhnovskii, M.P.Kozlovskii, I.V.Pylyuk, "Microscopic theory of phase transitions in the three-dimensional systems", Eurosvit, Lviv, 2001, 592 p. (in Ukrainian).

SOME REFEREED PUBLICATIONS

1. M.P.Kozlovskii, I.V.Pylyuk, "Entropy and specific heat of the 3D Ising model as functions of temperature and microscopic parameters of the system", Phys. Stat. Sol. (b), V. 183, P. 243-249 (1994).
2. I.V.Pylyuk, "Special functions for the investigation of critical properties of the three-dimensional Ising model in the frames of the sixth power measure density", Ukr. Fiz. Zh., V. 41, No 9, P. 885-894 (1996).
3. M.P.Kozlovskii, I.V.Pylyuk, V.V.Dukhovii, "Equation of state of the 3D Ising model with an exponentially decreasing potential in the external field", J. Magn. Magn. Mater., V. 169, P. 335-342 (1997).
4. I.V.Pylyuk, "Critical behavior of the three-dimensional Ising system: Dependence of thermodynamic characteristics on microscopic parameters", Teor. Mat. Fiz., V. 117, No 3, P. 442-470 (1998).
5. I.V.Pylyuk, "Description of critical behavior of Ising ferromagnet in the $\rho^6$ model approximation taking into account confluent correction. I. Region above the phase transition point", Low Temp. Phys., V. 25, No 11, P. 877-888 (1999).
6. I.V.Pylyuk, "Description of critical behavior of Ising ferromagnet in the $\rho^6$ model approximation taking into account the confluent correction. II. Region below the phase transition point", Low Temp. Phys., V. 25, No 12, P. 953-961 (1999).
7. M.P.Kozlovskii, V.V.Dukhovii, I.V.Pylyuk, "Self-consistent description of the critical behaviour of three-dimensional Ising-like systems: The phase transition temperature as a function of microscopic parameters", Ukr. J. Phys., V. 45, No 4-5, P. 512-514 (2000).
8. I.V.Pylyuk, M.P.Kozlovskii, "3D Ising system in an external field. Recurrence relations for the asymmetric $\rho^6$ model", Condens. Matter Phys., V. 4, No 1(25), P. 15-24 (2001).
9. I.V.Pylyuk, "Thermodynamic characteristics of three-dimensional Ising-like systems as functions of microscopic parameters. The $\rho^6$ model approximation", J. Phys. Stud., V. 5, No 3/4, P. 221-232 (2001).
10. I.R.Yukhnovskii, M.P.Kozlovskii, I.V.Pylyuk, "Thermodynamics of three-dimensional Ising-like systems in the higher non-Gaussian approximation: Calculational method and dependence on microscopic parameters", Phys. Rev. B, V. 66, No 13, 134410 (18 pages) (2002).
11. I.R.Yukhnovskii, I.V.Pylyuk, M.P.Kozlovskii, "Study of the critical behaviour of three-dimensional Ising-like systems on the basis of the $\rho^6$ model with allowance for microscopic parameters: I. High-temperature region", J. Phys.: Condens. Matter, V. 14, No 43, P. 10113-10129 (2002).
12. I.R.Yukhnovskii, I.V.Pylyuk, M.P.Kozlovskii, "Study of the critical behaviour of three-dimensional Ising-like systems on the basis of the $\rho^6$ model with allowance for microscopic parameters: II. Low-temperature region", J. Phys.: Condens. Matter, V. 14, No 45, P. 11701-11715 (2002).
13. M.P.Kozlovskii, I.V.Pylyuk, O.O.Prytula, "Microscopic analogue of the Landau free energy for three-dimensional Ising-like systems", Condens. Matter Phys., V. 6, No 2(34), P. 197-204 (2003).
14. M.P.Kozlovskii, I.V.Pylyuk, O.O.Prytula, "Behaviour of a three-dimensional uniaxial magnet near the critical point in an external field", Condens. Matter Phys., V. 7, No 2(38), P. 361-382 (2004).
15. I.V.Pylyuk, M.P.Kozlovskii, O.O.Prytula, "Analytic method of calculating thermodynamic functions for Ising-like system in an external field", Ferroelectrics, V. 317, P. 43-47 (2005).
16. M.P.Kozlovskii, I.V.Pylyuk, O.O.Prytula, "Behaviour of the order parameter of the simple magnet in an external field", Condens. Matter Phys., V. 8, No 4(44), P. 749-760 (2005).
17. M.P.Kozlovskii, I.V.Pylyuk, O.O.Prytula, "Microscopic description of the critical behavior of three-dimensional Ising-like systems in an external field", Phys. Rev. B, V. 73, No 17, 174406 (13 pages) (2006).
18. I.V.Pylyuk, "Three-dimensional Ising-like system in an external field. Microscopic approach to description of the critical behaviour using the asymmetric $\rho^4$ model", J. Magn. Magn. Mater., V. 305, P. 216-220 (2006).
19. M.P.Kozlovskii, I.V.Pylyuk, O.O.Prytula, "Critical behaviour of a three-dimensional one-component magnet in strong and weak external fields at T>Tc", Physica A, V. 369, P. 562-576 (2006).
20. M.P.Kozlovskii, I.V.Pylyuk, O.O.Prytula, "Free energy and equation of state of Ising-like magnet near the critical point", Nucl. Phys. B, V. 753 [FS], P. 242-251 (2006).
21. I.V.Pylyuk, "Three-dimensional Ising-like system in an external field: Microscopic calculation of the free energy in the higher non-Gaussian approximation", Phase Transitions, V. 80, No 1-2, P. 11-16 (2007).
22. I.V.Pylyuk, M.P.Kozlovskii, "Calculation of free energy of three-dimensional uniaxial magnet in external field based on the higher non-Gaussian distribution", AIP Conf. Proc., V. 1198, P. 132-143 (2009).
23. I.V.Pylyuk, M.P.Kozlovskii, "Calculation of free energy of a three-dimensional Ising-like system in an external field with the use of the $\rho^6$ model", Physica A, V. 389, P. 5390-5401 (2010).
24. M.P.Kozlovskii, I.V.Pylyuk, "Free energy of three-dimensional uniaxial magnet in the higher non-Gaussian approximation and in the presence of an external field", ISRN Condensed Matter Physics, V. 2011, 260750 (11 pages) (2011).
25. I.R.Yukhnovskii, M.P.Kozlovskii, I.V.Pylyuk, "Method for the calculation of free energy in a three-dimensional Ising-like system taking into account a correction for the interaction potential averaging", Ukr. J. Phys., V. 57, No 1, P. 80-94 (2012).
26. I.V.Pylyuk, M.V.Ulyak, "Critical behaviour of a 3D Ising-like system in the $\rho^6$ model approximation: Role of the correction for the potential averaging", Condens. Matter Phys., V. 15, No 4, 43006 (10 pages) (2012).
27. I.V.Pylyuk, "Order parameter of a three-dimensional Ising-like system in the simplest and higher non-Gaussian approximations", Condens. Matter Phys., V. 16, No 2, 23007 (9 pages) (2013).
28. I.R.Yukhnovskii, M.P.Kozlovskii, I.V.Pylyuk, "Critical behavior of a 3D Ising-like system in the higher non-Gaussian approximation: Inclusion of the critical exponent of the correlation function", Int. J. Mod. Phys. B, V. 28, No 24, 1450160 (16 pages) (2014).
29. M.P.Kozlovskii, I.V.Pylyuk, "Analytical description of the critical behavior of a three-dimensional uniaxial magnet in an external field by singling out a reference system", Ukr. J. Phys., V. 60, No 4, P. 362-370 (2015).
30. I.V.Pylyuk, M.P.Kozlovskii, "Correlation function and susceptibility of Ising magnet in a vicinity of the phase transition point", Ukr. J. Phys., V. 60, No 10, P. 1075-1081 (2015).
31. I.V.Pylyuk, M.P.Kozlovskii, "Structural characteristics of a three-dimensional Ising-like system in the critical region", Int. J. Mod. Phys. B, V. 30, No 32, 1650232 (14 pages) (2016).
32. M.P.Kozlovskii, O.A.Dobush, I.V.Pylyuk, "Using a cell fluid model for the description of a phase transition in simple liquid alkali metals", Ukr. J. Phys., V. 62, No 10, P. 865-873 (2017).
33. M.P.Kozlovskii, I.V.Pylyuk, O.A.Dobush, "The equation of state of a cell fluid model in the supercritical region", Condens. Matter Phys., V. 21, No 4, 43502 (26 pages) (2018).
34. I.V.Pylyuk, "Fluid critical behavior at liquid-gas phase transition: Analytic method for microscopic description", J. Mol. Liq., V. 310, 112933 (14 pages) (2020).
35. I.V.Pylyuk, O.A.Dobush, "Equation of state of a cell fluid model with allowance for Gaussian fluctuations of the order parameter", Ukr. J. Phys., V. 65, No 12, P. 1080-1088 (2020).
36. I.V.Pylyuk, M.P.Kozlovskii, "First-order phase transition in the framework of the cell fluid model: Regions of chemical potential variation and the corresponding densities", Ukr. J. Phys., V. 67, No 1, P. 54-61 (2022).

LAST UPDATE  February 11, 2022