prof. RNDr. Andrej Bobák, DrSc.

Contacts: 

Address: Park Angelinum 9, 04001 Košice
phone: +421 55 2342524
E-mail:  andrej.bobak@upjs.sk

 

 

 

Academic titles and degrees:

  • 1973 ­ RNDr.
  • 1981 ­ CSc.
  • 1986 ­ Associated professor
  • 2000 ­ DrSc.
  • 2001 ­ Professor

Professional career:

  • 1967-­1972: Study at the Faculty of Science, P.J. Šafárik University in Košice in the field Condensed Matter Physics.
  • 1972-­1973: Post-master study at the Department of Theoretical Physics and Gephysics,  Faculty of Science, P.J. Šafárik University in Košice.
  • 1973: Defense of rigorosum thesis at the Faculty of Science, P.J. Šafárik University in Košice “The extension of the Kronmüller theory of the magnetization curve for the region of larger magnetic field” to obtain the RNDr. academic title.
  • 1973­-1982: research worker at the Department of Theoretical Physics and Geophysics, Faculty of Science, P.J. Šafárik University in Košice.
  • 1981: Defense of the dissertation thesis at Faculty of Science, P.J. Šafárik University in Košice “Contribution to the theory of amorphous ferromagnets” to obtain the PhD. degree.
  • 1982-­1986: Assistant professor at the Department of Theoretical Physics and Gephysics, Faculty of Science, P.J. Šafárik University in Košice.
  • 1986-­2002: Head of the Department of Theoretical Physics and Geophysics, Faculty of Science, P.J. Šafárik University in Košice.
  • 1986-­2001: Associated professor in the field theoretical physics at the Department of Theoretical Physics and Geophysics, Faculty of Science, P.J. Šafárik University in Košice.
  • 2000: Defense of doctor of science thesis at the Faculty of Mathematics and Physics, Comenius University in Bratislava “New theory of the effective field for Ising spin systems” to obtain the DrSc. degree.
  • 9.10.2000: Inauguration lecture at the Faculty of Science, P.J. Šafárik University in Košice “New trends in the theory of magnetism” to obtain the professor title.
  • 2001: Appointment of a full professor of physics.
  • 2003-­2007: Vice dean for doctoral study and further education at Faculty of Science, P.J. Šafárik University in Košice.
  • 2007-2011: Vice dean for international affairs, research and doctoral study at Faculty of Science, P.J. Šafárik University in Košice.
  • 2011-until now: Head of the Department of Theoretical Physics and Astrophysics, Faculty of Science, P.J. Šafárik University in Košice.
  • 2011-until now: Deputy director of the Institute of Physics, Faculty of Science, P.J. Šafárik University in Košice for academic affairs.

Teaching:

  • Theoretical Mechanics
  • Theory of Electromagnetic Field
  • Theory of Relativity
  • Phase Transitions and Critical Phenomena

Monographs and textbooks:

  • A. Bobák, E. Vargová, Problems and Solutions on Electromagnetic Field, Faculty of Science, P.J. Šafárik University, Košice 2001, 114 pages.
  • A. Bobák, Theory of Electromagnetic Field, P.J. Šafárik University, Košice 2002, 182 pages.
  • A. Bobák, Phase Transitions and Critical Phenomena, Project 2005/NP1-051 11230100466, European Social Fund, Košice 2007, 110 pages.

Research:

  • study of magnetic properties of disordered magnets
  • study of mixed-spin magnetic systems
  • study of magnetic properties of molecule-based magnets
  • study of phase transitions in magnetic systems 

Selected publications:

  1. A. Bobák, Effect of fluctuations of the coordination number on some properties of amorphous ferromagnets, phys. stat. sol. (b) 109 (1982) 161‑166.
  2. T. Balcerzak, A. Bobák, J. Mielnicki and V. H. Truong, A new approach for the diluted Ising ferromagnet description, phys. stat. sol. (b) 130 (1985) 183‑190.
  3. A. Bobák and M. Jaščur, A new type of effective field theory for Ising model with spin 1/2, phys. stat. sol. (b) 135 (1986) K9-K12.
  4. A. Bobák and M. Jaščur, Phase diagrams for two‑ and three‑dimensional Ising models with fluctuating exchange integrals, J.Phys.: Condens. Matter 2 (1990) 10053‑10058.
  5. A. Bobák and P. Macko, Phase transition of site‑dilute Ising model in a random field, J. Magn. Magn. Mater. 109 (1992) 172‑178.
  6. M. Jaščur and A. Bobák, Application of two site cluster approximation to the semi infinite Ising model, Phys. Rev. B 45 (1992) 9722-9727.
  7. A. Bobák and M. Jaščur, Ferrimagnetism in diluted mixed Ising spin systems, Phys. Rev. B 51 (1995) 11533-11537.
  8. A. Bobák and M. Jurčišin, A discussion of critical behaviour in a mixed‑spin Ising model, Physica A 240 (1997) 647‑656.
  9. A. Bobák and M. Jurčišin, A theoretical study of the diluted mixed spin‑1 and spin‑3/2 Ising ferrimagnet, Physica B 233 (1997) 187‑195.
  10. M. Žukovič and A. Bobák, Phase diagrams and tricritical behaviour of a diluted Ising metamagnet in an external field, J. Magn. Magn. Mater. 170 (1997) 49-56.
  11. A. Bobák, The effect of anisotropies on the magnetic properties of a mixed spin 1 and spin 3/2 Ising ferrimagnetic system, Physica A 258 (1998) 140-156.
  12. O. F. Abubrig, D. Horváth, A. Bobák and M. Jaščur, Mean-field solution of the mixed spin-1 and spin-3/2 Ising system with different single-ion anisotropies, Physica A 296 (2001) 437-450.
  13. A. Bobák, F.O. Abubrig and T. Balcerzak, Multicritical points in the mixed ferromagnetic-ferrimagnetic ternary alloy with a single-ion anisotropy, Phys. Rev. B  68 (2003) 224405-1-9.
  14. J. Dely and A. Bobák, Magnetic properties of the ternary alloy with a structure of Prussian blue analogs, Physica B 388 (2007) 49-58.
  15. J. Dely, A. Bobák and M. Žukovič, Compensation temperatures and magnetic susceptibility of a mixed ferro-ferrimagnetic ternary alloy, Phys. Lett. A 373 (2009) 3197-3200.
  16. A. Bobák, V. Pokorný and J. Dely, Critical properties of the mixed spin-1 and spin-1/2 anisotropic Heisenberg model in the Oguchi approximation, Physica A 388 (2009) 2157-2167.
  17. M. Žukovič, M. Borovský and A. Bobák, Phase diagram of a diluted triangular lattice Ising antiferromagnet in a field, Phys. Lett. A 374 (2010) 4260-4264.
  18. A. Bobák, J. Dely and M. Žukovič, Phase transition and compensation temperature in the mixed spin-1 and spin-1/2 anisotropic Heisenberg ferrimagnet, Physica A 390 (2011) 1953-1960.
  19. K. Szalowski, T. Balcerzak and A. Bobák, Thermodynamic properties of a diluted Heisenberg ferromagnet with interaction anisotropy − Magnetocaloric point of view, J. Magn. Magn. Mater. 323 (2011) 2095-2102.
  20. M. Žukovič and A. Bobák, Phase transitions in a triangular Blume-Capel antiferromagnet, Phys. Rev. E 87 (2013) 032121-1-10.
  21. E. Jurčišinová, M. Jurčišin and A. Bobák, The anti-ferromagnetic Ising model on the simplest pure Husimi lattice: An exact solution, Phys. Lett. A 377 (2013) 2712-2717.

Projects:

  1. GAV project:1/248/92 “The study of phase transitions in magnetic systems“, 1992-1994, principal investigator.
  2. VEGA project:1/2043/95 “The study of magnetic properties of some magnetic systems“, 1995-1997, principal investigator.
  3. MVTP Poland/Slovak project: “Theoretical studies of magnetic mixed spin systems“, 1998-2000, principal investigator. Partner: Department of Solid State Physics, University of Łódź (Prof. T. Balcerzak).
  4. VEGA project:1/6020/99 “A theoretical study of the mixed-spin magnetic systems“, 1999-2001, principal investigator.
  5. VEGA project:1/9034/02 “A theoretical study of the selected molecular-based and low dimensional magnets”, 2002-2004, principal investigator.
  6.  APVT-20-009902 “Low-dimensional magnetic materials”, 2002-2004, principal investigator of the part of project.
  7. VEGA 1/2009/05“A theoretical study of the selected spin lattice systems ”, 2005-2007, principal investigator.
  8. APVT-20-005204 “Magneto-structure correlations in non-convenient magnetic materials“, 2005-2007, principal investigator of the part of project.
  9. VEGA 1/0128/08 “A theoretical study of the quantum and classical spin systems”, 2008-2010, principal investigator.
  10. VEGA 1/0431/10 “A study of quantum and cooperative phenomena in geometrical frustrated spin models”, 2010-2011, investigator.
  11. VEGA 1/0234/12 “Frustrated spin systems”, 2012-2015, principal investigator.

Others:

  • guarantor of master study programme of Physics
  • guarantor of master study programme of Physics within the training of teachers with academic subject specialization
  • guarantor of doctoral study programme of General Physics and Mathematical Physics
  • guarantor of habilitation procedures and procedure for the appointment of a professor in the branch of study Physics
  • scientific board member of the Faculty of Science, P.J. Šafárik University in Košice
  • scientific board member of the Institute of Experimental Physics SAS in Košice
  • scientific board member of the Institute of Astronomy SAS in Tatranská Lomnica
  • member of the commission for defense of doctor science thesis (DrSc.) in the branches of Astronomy and Astrophysics
  • chairman of departmental board for doctoral study programme of General Physics and Mathematical Physics
  • chairman of the Slovak Grant Agency
  • chairman of the Slovak Grant Agency Commission for mathematical sciences, computer and informatics sciences, and physical sciences

Awards:

  • Award of Dean of the Faculty of Science, P.J. Šafárik University in Košice for scientific and research activities in the year 1998.
  • Award of town Košice in the year 2011 for remarkable deserts in the scientific research and creation scientific school in the branch General Physics and Mathematical Physics
  • Award of Dean of the Faculty of Science, P.J. Šafárik University in Košice for pedagogical activities in the year 2011.
  • Award of Rector of the P.J. Šafárik University in Košice in the year 2013 for outstanding achievements in the effective-field theory with correlations and its applications to magnetic phase transitions.

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