About us > Staff > Department of Analytical Chemistry

Olha (Olga) Zhak

Position: Associate Professor, Department of Analytical Chemistry

Scientific degree: Candidate of Chemical Sciences

Academic status: Associate Professor

Phones (Office): (032) 239-45-10, (032) 239-46-31

Email: olha.zhak@lnu.edu.ua

Google Scholar profile: scholar.google.com.ua

Courses

Publications

  1. Denysyuk O.V., Stelmakhovych B.M., Kuz’ma Yu.B. Crystal structures of the new compounds Ln(Ag5Al0.5)5 (Ln – Y, La–Lu) // Izvestiya RAN. Metally. 1993. № 5. P. 213–215. (in Russian).
  2. Denysyuk O.V., Stelmakhovych B.M., Kuz’ma Yu.B. New compound NdAg6Al3.4 and it’s structure // Visnyk Lviv Univ. Ser. Chem. 1994. Vol. 33. P. 24–26. (in Ukrainian).
  3. Denysyuk O.V., Stel’makhovych B.M., Kuz’ma Yu.B. Crystal structure of new compounds in the RE-Ag-Al systems // J. Solid State Chem. 1994.  Vol. 109.  P. 172–174. https://doi.org/10.1006/jssc.1994.1087
  4. Kuz’ma Yu.B., Zhak O.V., Shkolyk S.Yu. The system lanthanum – silver – aluminium // Dopovidi NAN Ukraine. 1995. No 3. P. 101–104. (in Ukrainian).
  5. Zhak O.V., Stel’makhovych B.M., Kuz’ma Yu.B. Phase equlibria in the Ce-Ag-Al system in the region of 0-0.50 mol. part Ce // Izvestiya RAN. Metally. 1995.  No 6. P. 158–161. (in Russian).
  6. Zhak O.V., Babizhetskyy V. S., Stel’makhovych B.M., Kuz’ma Yu.B. Investigation of the La14Ag51 crystal structure// Dopovidi NAN Ukraine. 1996. No 12. P. 117–118. (in Ukrainian).
  7. Zhak O.V., Stel’makhovych B.M., Kuz’ma Yu.B. Sm-Ag-Al system // J. Alloys Compd. 1996. Vol. 237. P. 144–149. https://doi.org/10.1016/0925-8388(95)02070-5
  8. Zhak O.V., Stel’makhovych B.M., Kuz’ma Yu.B. Single crystal investigation of the Nd3Al11 crystal structure // Dopovidi NAN Ukraine. 1997. No 1. P. 118–120. (in Ukrainian).
  9. Kuz’ma Yu.B., Zhak O.V., Sarapina O.S. X-ray study of the Nd-Ag-Al system // Izvestiya RAN. Metally. 1997. No 2. P. 166–172. (in Russian).
  10. Zhak O.V., Mozharivsky Yu.A., Kuz’ma Yu.B. Crystal structure of the compound Sm14Ag51–x (x = 0.13) // Izvestiya RAN. Metally. 1999.  No 1.  P. 88–90. (in Russian).
  11. Zhak O.V., Stel’makhovych B.M. New compound PrAg52Al1.48 and it’s crystal structure // Visnyk Lviv Univ. Ser. Chem. 1999.  Vol. 38. P. 6–7. (in Ukrainian).
  12. Zhak O.V., Kuz’ma Yu.B., Stel’makhovych B.M. The compounds Ln(Ag7Al0.3)5 (Ln-Pr, Nd, Sm) and their crystal structure // J. Alloys Compd. 1999.  Vol. 289. P. 181–184. https://doi.org/10.1016/S0925-8388(99)00166-8
  13. Zhak O.V., Kuz’ma Yu.B. The Pr-Ag-Al system // J. Alloys Compd. 1999. Vol. 291. P. 175–180. https://doi.org/10.1016/S0925-8388(99)00253-4
  14. Zhak O.V., Kuz’ma Yu.B. Ag-Al-La // Red Book. Constitutional Data and Phase Diagrams of Metallic Systems. Published by: MSI. Materials Science International Services GmbH. Stuttgart. Germany. 1999. Vol. 41. P. 629.
  15. Orishchin S.V., Zhak O.V., Koval’chuk I.V., Kuz’ma Yu.B. Phase Equilibria in the Y-Co-P System at 1070 K // Russ. J. Inorg. Chem. 2001. Vol. 46, N 12. P. 1892–1895.
  16.  Orishchin S.V., Zhak O.V., Budnik S.L., Kuz’ma Yu.B. The Y-Fe-P System // Russ. J. Inorg. Chem. 2002. Vol. 47, N 9. P. 1411–1414.
  17. Oryshchyn S.V., Zhak O.V., Guerin P., Deputier S., Kuz’ma Yu.B. Structure of Mo2.0-хNi1.0+xP (х = 0.2) and some crystal-chemical features of ternary phases in the Mo-Ni-P system // Inorg. Mater. 2002. Vol. 38, N 12. P. 1195–1202.
  18. Zhak O.V., Kuz’ma Yu.B., Pugach O.V. 500 °C Section of the Y–Ag–Sb Phase Diagram // Inorganic Materials.  2003. Vol. 39, No 4. P. 323–326.
  19. Zhak O., Pugach O., Kuz’ma Yu. The system Ce-Ag-Sb // Visnyk Lviv Univ. Ser. Chem. 2003. Vol. 43.   P. 15–20. (in Ukrainian).
  20. Stel’makhovych B.M., Zhak O.V., Bilas N.R., Kuz’ma Yu.B. The Gd-Ag-Al system // J.Alloys Compd. 2004. 363. P. 243–248. https://doi.org/10.1016/S0925-8388(03)00480-8
  21. Oryshchyn S.V., Zhak O.V., Deputier S., Le Senechal C., Guerin P. Crystal structures of Zr2Mn12P7 and (Mo, Mn)12P7 // Inorg. Mater. 2004. Vol. 40, N 6.  P. 616–622.
  22. Zhak O., Oryshchyn S., Polyanska T., Taras I. Systems Mo-Co-Sb and Mo-Ni-Sb // Visnyk Lviv Univ. Ser. Chem. 2005. Vol. 46.  P. 23–28. (in Ukrainian).
  23. Zelinska M., Zhak O., Oryshchyn S., Pivan J.-Y. Crystal structure refinement of the phosphides ErNi4P2, Er25Ni49P33 and Er1-xNiP // Visnyk Lviv Univ. Ser. Chem. 2006. Vol. 47. P. 57–64. (in Ukrainian).
  24. Zhak O.V., Malyus N.V. 500 °C Section of the Pr–Ag–Sb Phase Diagram// Inorganic Materials. 2006. Vol. 42, No 9. P. 976–980.
  25. Zelinska M,. Pivan J.-Y., Oryshchyn S., Zhak O., Potel M., Tougait O., Noël H. Refinement of the Crystal Structure of the Phosphide Er3Pd20P6 // Z. Krystallogr. 2006. Vol. 221. P. 435–436.
  26. Zelinska, Zhak O., Oryshchyn S., Babizhetskyy V., Pivan J.-Y., Guérin R. Erbium-rich region of the ternary Er-Ni-Sb system: Solid state phase equilibria at 1073 K and crystal structures of the new ternary compound Er5Sb3-xNix (x = 0.48) and both modifications of Er5Sb3 // J. Alloys Compds. 2007. Vol. 437. P. 133–139.  https://doi.org/10.1016/j.jallcom.2006.07.087
  27. Zelinska M., Pivan J.-Y., Oryshchyn S., Zhak O., Potel M., Babizhetskyy V. Crystal structure refinement of the erbium palladium arsenic, ErPdAs // Z. Krystallogr. NCS. 2007. Vol. 222. P. 11– https://doi.org/10.1524/ncrs.2007.0005
  28. Zelinska M,. Oryshchyn S., Zhak O., Pivan J-Y., Potel M., Noël H. Redetermination of Ni5P4 // Acta Cryst. E. 2007. Vol. 63E. P. i158–i159   https://doi.org/10.1107/S1600536807028164
  29. Zelinska M., Zhak O., Oryshchyn S., Polianska T., Pivan J.-Y. Solid State Phase Equilibria in the Er-Ni-P and Er-Ni-As Systems at 800oC // Z. Naturforsh. 2007.  Bd. 62b. S. 1143–1152.  http://www.znaturforsch.com/ab/v62b/s62b1143.pdf
  30. Antonyshyn I., Oryshchyn S., Zhak O., Babizhetskyy V. System V-Ga-Sb at 500°С // Visnyk Lviv Univ. Ser. Chem. 2008. Vol. 49. Pt. 1. P. 50–57. (in Ukrainian).
  31. Antonyshyn I., Zhak O., Oryshchyn S., Babizhetskyy V., Hoch C., Akselrud L. Crystal Structure of the New Ternary Antimonide Ho5GaSb3 // Z. Naturforsch. 2009. Vol. 64b. P. 909–914. https://doi.org/10.1515/znb-2009-0806
  32. Antonyshyn I., Prots Yu., Oryshchyn S., Zhak O. Crystal structure of lanthanum gallium antimonide, La12Ga26Sb24.02 // Z. Kristallogr. NCS. 2010. Vol. 225. P. 229–230. https://doi.org/10.1524/ncrs.2010.0099
  33. Antonyshyn I.S., Oryshchyn S. V., Zhak O. V. Solid state phase equilibria in the Y-Ga-Sb system at 500 oC // Kharkov University Bulletin. 2010. № 895. Chemical Series. Issue 18(41). P. 209–214. http://chembull.univer.kharkov.ua/archiv/2010/27.pdf
  34. Zelinska M., Oryshchyn S., Zhak О., Pivan J.-Y., Potel M., Tougait O., Noel H., Kaczorowski D.  Crystal structure and physical properties of the new ternary antimonides Ln3Pd8Sb4 (Ln = Y, Gd, Tb, Dy, Ho, Er, Tm) // J. Solid State Chem.  2010. Vol. 183, Is. 9. P. 2121–2126.  https://doi.org/10.1016/j.jssc.2010.07.002
  35. Oryshchyn S., Babizhetskyy , Zhak O., Zelinska M., Pivan J.-Y., Duppel V., Simon A., Kienle L. The new ternary pnictides Er12Ni30P21 and Er13Ni25As19: Crystal structures and magnetic properties // J. Solid State Chem. 2010. Vol. 183. P. 2534–2543. https://doi.org/10.1016/j.jssc.2010.08.021
  36. Babizhetskyy V., Oryshchyn , Zhak O., Lysyy O., Simon A. Crystal structure of neodymium palladium phosphide NdPdP // Z. Kristallogr. NCS. 2011. Vol. 1–2. P. 1–2. https://doi.org/10.1524/ncrs.2011.0001
  37. Oryshchyn S., Babizhetskyy V., Zhak O., Stoyko S., Guerin R., Simon A. Crystal structure of HT-Ni5P2 and reinvestigation of isotypic Ni5As2 // Intermetallics.  2011. Vol. 19. P. 1041–1046.  https://doi.org/10.1016/j.intermet.2011.03.013
  38. Antonyshyn I., Zhak O., Oryshchyn S. Crystal structure of the hallide Ho3Ga5 // Visnyk Lviv Univ. Ser. Chem. 2011. Vol. 52. P. 72–77. (in Ukrainian).
  39. Oryshchyn S., Stoyko S., Zhak O. Crystal structure of the arsenides RCo5As3 (R = Y, Gd–Er) // Visnyk Lviv Univ. Ser. Chem. 2012. Vol. 53. P. 146–150.  (in Ukrainian).
  40. Pustovoychenko M., Dzevenko M., Zhak O. Single crystal investigation of the SmNi5 compound // Visnyk Lviv Univ. Ser. Chem. 2012. Vol. 53. P. 436–437. (in Ukrainian).
  41. Zhak O., Oryshchyn S., Malanyak, Babizhetskyy V., Köhler J. Crystal structure of neodymium palladium antimonide NdPd0.85Sb2 // Z. Kristallogr. NCS. 2012. Vol. 227. P. 287–288. https://doi.org/10.1524/ncrs.2012.0189
  42. Antonyshyn, Prots Yu., Margiolaki I., Schmidt M.P., Zhak O., Oryshchyn S., Grin Yu. Tetragonal-antiprismatic coordination of transition metals in intermetallic compounds: ω1-Mn6Ga29 and its structural relationships // J. Solid State Chem. 2013. Vol. 199. P. 141–148. https://doi.org/10.1016/j.jssc.2012.12.002
  43. Zhak O., Pasternitska V., Malanyak Kr. Crystal structure of the new phosphide Y3Pd20P6 // Visnyk Lviv Univ. Ser. Chem. 2013. Vol. 54, Pt. 1. P. 84–91. (in Ukrainian).
  44. Zhak O., Stoyko S., Babizhetskyy V., Shved O., Oryshchyn S., Hoch C. Interaction of yttrium with nickel and phosphorus: Phase diagram and structural chemistry // J. Solid State Chem. 2013. Vol. 207. P. 87–93. https://doi.org/10.1016/j.jssc.2013.09.005
  45. Stoyko S., Zhak O., Oryshchyn S., Babizhetskyy V., Hiebl K. Crystal structure and physical properties of the ternary antimonides R3Ni6Sb5, R = Y, Gd, Tb // J. Alloys Compds. 2013. Vol. 602. P. 1–7. https://doi.org/10.1016/j.jallcom.2014.02.184
  46. Zhak O., Shved O., Babizhetskyy V. Crystal structure of the new phosphide Hf2Ni12P7 // Visnyk Lviv Univ. Ser. Chem. 2014. Vol. 55. Pt. 1. P. 93–99. (in Ukrainian).
  47. Zhak O., Hladka I. Crystal structure of the new antimonides LuPdSb and LuPd2Sb // Visnyk Lviv Univ. Ser. Chem. 2015. Vol. 56. Pt. 1. P. 102–108. (in Ukrainian).
  48. Zhak O., Fedyna A., Hladka I. Crystal structures of the new ternary compounds La8Pd24Sb0.78 and La2Pd9Sb3 // Visnyk Lviv Univ. Ser. Chem. 2016. Vol. 57. Pt. 1. P. 112–121.  (in Ukrainian).
  49. Zhak O., Senkiv I., Babyzhetskyy V., Dzevenko M., Bigun I., Havela L., Maskova S., Paukov M. Ternary arsenides RECo5As3 (RE = Y, Gd, Tb, Dy, Ho, Er) // J. Alloys Compds. 2016. Vol. 685. P. 78–83. https://doi.org/10.1016/j.jallcom.2016.05.224
  50. Shcherba I. D., Bekenov L.V., Antonov V. N., Noga H., Uskokovic D., Zhak O. V., Kovalska M. V. Electronic Structure and X-ray Spectroscopic Properties of YbNi2P2 // Journal of Electron Spectroscopy and Related Phenomena. 2016. Vol. 212. P. 5–10. https://doi.org/10.1016/j.elspec.2016.07.002
  51. Zhak O.,  Dzevenko M., Shved O. New phosphide Hf6Ni20Р13 and it’s crystal structure // Proc. Shevchenko Sci. Soc. Chem. Sci. 2016. Vol. XLIV. С. 14–20. (in Ukrainian).
  52. Zhak O., Pshoniak M. Crystal structure of the new arsenide LuNiAs // Visnyk Lviv Univ. Ser. Chem. 2017. Is. 58. Pt. 1. P. 102–107.
  53. Zhak O. Refinement of the ZrNi0.8P2-х crystal structure // Proc. Shevchenko Sci. Soc. Chem. Sci. 2017. Vol. XLVIII. P. 90–97. (in Ukrainian).

 

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