Institute of Physics of Materials AS CR, v. v. i. > People > Zobač Ondřej

doc. Mgr. Ondřej Zobač, Ph.D.

Room302
Phone number+420 532 290 401
E-mail[javascript protected email address]
Researcher IDP-2244-2015
ORCID0000-0001-5443-0645
Positionresearcher - Structure of Phases and Thermodynamics Group

Scientific interest
  • Construction of experimental phase diagrams
  • Analytical methods SEM-EDX, STEM, XRD, DTA, DSC
  • Thermodynamic modelling by CALPHAD approach

Education
  • 2012-2015: Doctoral degree - Masaryk University, Faculty of Sciences, Physical chemistry
  • 2010-2012: Master’s degree - Masaryk University, Faculty of Sciences, Physical chemistry
  • 2007-2010: Bachelor’s degree - Masaryk University, Faculty of Sciences, Chemistry
Work experiences
  • From 12/2019: Researcher - Structure of Phases and Thermodynamics Group, Institute of Physics of Materials, CAS
  • 11/2017-11/2019: Postdoc - The Institute for Inorganic Chemistry, Functional Materials, Universität Wien, Vienna, Austria
  • 10/2016-11/2017: Postdoc - Structure of Phases and Thermodynamics Group, Institute of Physics of Materials, CAS
  • 10/2015-09/2016: Postdoc - Thermochemistry of Materials SRC, National University of Science and Technology "MISIS", Moscow, Russian Federation
  • 09/2012-09/2015: Ph.D. Student - Department of Chemistry, Masaryk University
International internships
  • 12/2024: Visiting researcher - University of Vienna, Vienna, Austria
  • 04,11/2024: Visiting researcher - Institute of Metallurgy and Materials Science, Polish Academy of Sciences, Krakow, Poland
  • 10/2024: Invited lectures - National Tsing Hua University              Hsinchu           Taiwan
  • 09/2014-11/2014: Visiting researcher - Montan Universität, Leoben, Austria
  • 09/2013-11/2013: Visiting researcher - Voestalpine Stahl GmbH, Linz, Austria
  • 09/2012- 11/2012: Visiting researcher - Voestalpine Stahl GmbH, Linz, Austria


2026

Král L., Zobač O., Ullattil S., Dočkalová K., Roupcová P., Friák M.: Interesting influence of structure phases on hydrogen storage properties of AB5 type alloys. Int. J. Hydrogen Energy 236 (2026) 155053

Zobač O., Richter K., Fima P.: Liquidus projection of the In-Sb-Zn system. J. Mater. Sci. 61 (2026) 3030-3046

Huňařová A., Berecová V., Zobač O., Friák M., Watson A., Holec D., Pavlů J.: Unveiling the consequences of complete substitution of Sn atoms for Ni atoms in LaNi5: A DFT perspective. NANOCON 2025 Conference Proceedings (2026) 386-391

Garstenauer D., Sallfeldner L., Zobač O., Jirsa F., Richter K.: Direct vapour-solid synthesis of intermetallic Pt-Zn and Pt-Te nanoparticles on carbon: Enhanced oxygen reduction through Te and Zn incorporation. Catalysts 16 (2026) 459



2025

Zobač O., Friák M., Kovaříková Oweisová S., Pavlů J., Holec D., Zlá S., Kawuloková M., Smetana B., Watson A.: Combined experimental and theoretical study of stability of La2Ni7. METAL 2025 Conf. Proc. 2025 (2025) 544-549

Friák M., Kovaříková Oweisová S., Pavlů J., Holec D., Zobač O., Kawuloková M., Zlá S., Smetana B.: First-principles study of thermodynamic stability and elasticity of La5Ni19. METAL 2025 Conf. Proc. 2025 (2025) 428-433

Zobač O.: B-Fe-Si (Boron-Iron-Silicon). Ternary Alloys: A Comprehensive Compendium of Evaluated Constitutional Data and Phase Diagrams 23 (2025) 408-423

Garstenauer D., Zobač O., Jirsa F., Kleitz F., Richter K.: Enhanced oxygen reduction with ethanol tolerant Ni-Te nanoparticles on carbon support through vapour-solid preparation. Catalysts 15 (2025) 368

Král L., Zobač O., Ullattil S., Roupcová P., Zym M., Smajlaj M., Renz L.: Hydride formation in chosen LaNiSn alloys. METAL 2025 Conf. Proc. 2025 (2025) 470-476

Kovaříková Oweisová S., Pavlů J., Zobač O., Kawuloková M., Zlá S., Smetana B., Friák M.: Quantum-mechanical study of HLaNiSn intermetallic phase. METAL 2025 Conf. Proc. 2025 (2025) 434-439

Mikšík D., Zobač O., Pavlů J., Kroupa A.: Experimental phase diagram of the Co-Se-Sn system at 400, 600 and 1000 °C. J. Alloys Comp. 1044 (2025) 184561

Garstenauer D., Myakala S., Ayala P., Rabl-Wolff H., Zobač O., Jirsa F., Eder D., Cherevan A., Richter K.: Engeneering active intermetallic Pt-Zn sites via vapour-solid synthesis for photocatalytic hydrogen production. Sustainable Energy & Fuels 9 (2025) 3283-3292

Zobač O., Novák D., Pavlů J., Friák M., Kroupa A.: Thermodynamic study of binary phase diagram iron-selenium. CALPHAD 88 (2025) 102774



2024

Friák M., Zobač O., Chlup Z., Fikar O., Papež P., Zelený M., Kroupa A.: Materials properties of defect-stabilized off-stoichiometric tau-phase Al2Ge2Mg. Intermetallics 169 (2024) 108294

Kroupa A., Zobač O., Zemanová A., Richter K.: CALPHAD-type reassessment of Cu-Si and full assessment of the Al-Cu-Si systems. J. Phase Equil. Diffus. 45 (2024) 1206 -1243

Weiser A., Todt J., Holcova J., Záležák T., Paulik A., Holec D., Jarý M., Zobač O., Mrázek J., Frenzel J., Keckes J., Dlouhý A.: Hydrogen penetration into the NiTi superelastic alloy investigated in-situ by synchrotron diffraction experiments. Acta Mater. 277 (2024) 120217

Friák M., Čípek P., Pavlů J., Zobač O., Roupcová P., Miháliková I., Holec D., Msallamová Š., Michalcová A.: Structure-property relations in Pb-supersaturated metastable Sn-rich Pb-Sn alloys. Metall. Mater. Trans. A 55 (2024) 1867-1877

Wibner P., Kriegel R., Garstenauer D., Zobač O., Kuběna I., Rösch N., Seyller T., Armbrüster M., Richter K.: Facile thermodynamically controlled synthesis of intermetallic Zn1-xPdx/Al2O3 and its methanol steam reforming properties. Journal of Physical Chemistry C 128 (2024) 6906-6916

Garstenauer D., Guggenberger P., Zobač O., Jirsa F., Richter K.: Active site engineering of intermetallic nanoparticles by the vapour-solid synthesis: carbon black supported nickel tellurides for hydrogen evolution. Nanoscale 16 (2024) 20168-20181

Zobač O., Kroupa A., Dinsdale A.: Use of third generation data for the pure elements to model the thermodynamics of binary alloy systems: Part 3 - The theoretical prediction of the Al-Si-Zn system. CALPHAD 87 (2024) 102742



2023

Zobač O., Žižka R., Roupcová P., Kroupa A.: Experimental study of the Ni-Se-Sn phase diagram isothermal sections at 800 K, 1000 K and 1100 K. J. Phase Equil. Diffus. 44 (2023) 594-605

Zobač O., Karpíšková L., Kroupa A.: Experimental study of the ternary phase diagram Al-Ge-Mg. J. Phase Equil. Diffus. 44 (2023) 127-136

Homolová V., Čiripová L., Zobač O., Zemanová A., Falat L.: Experimental investigation phase equilibria of the Ho-Ir-O ternary system at 1073 K. Materials 16 (2023) 5406

Zobač O., Kroupa A.: CALPHAD-Based thermodynamic description of the binary phase diagram Ge-Ti. J. Phase Equil. Diffus. 44 (2023) 115-126



2022

Zobač O., Richter K., Kroupa A.: Experimental Phase Diagram of the Ag-Se-Sn System at 250, 400 and 550 °C. J. Phase Equil. Diffus. 43 (2022) 32-42

Zobač O., Zemanová A., Chen S., Kroupa A.: CALPHAD-Type Assessment of the Pb-Se-Sn System. J. Phase Equil. Diffus. 43 (2022) 243-255



2021

Gröbner J., Kroupa A., Zobač O.: Cr-Ni-Si (Chromium-Nickel-Silicon). Ternary Alloys - A Comprehensive Compendium of Evaluated Constitutional Data and Phase Diagram 20 (2021) 294-313

Zobač O., Kroupa A.: Ag-Bi-Sn (Gold-Bismuth-Tin). Ternary Alloys - A Comprehensive Compendium of Evaluated Constitutional Data and Phase Diagram 20 (2021) 165-176

Kroupa A., Zobač O., Richter K.: The thermodynamic reassessment of the binary Al-Cu system. J. Mater. Sci. 56 (2021) 3430-3443

Kirkovska I., Homolová V., Zobač O., Zemanová A.: Experimental Study and Thermodynamic Modeling of B-Fe-W System. J. Phase Equil. Diffus. 42 (2021) 499-514

Kroupa A., Record M., Chen H., Zobač O.: Bi-Sb-Sn (Bismuth-Antimony-Tin). Ternary Alloys - A Comprehensive Compendium of Evaluated Constitutional Data and Phase Diagram 20 (2021) 240-253

Vřešťál J., Kroupa A., Zobač O.: Ni-Sb-Sn (Nickel-Antimony-Tin). Ternary Alloys - A Comprehensive Compendium of Evaluated Constitutional Data and Phase Diagram 20 (2021) 534-554

Zobač O., Buchlovská K., Pavlů J., Kroupa A.: Thermodynamic Description of Binary System Nickel-Selenium. J. Phase Equil. Diffus. 42 (2021) 468-478

Gröbner J., Kroupa A., Zobač O.: Bi-Sn-Zn (Bismuth-Tin-Zinc). Ternary Alloys - A Comprehensive Compendium of Evaluated Constitutional Data and Phase Diagram 20 (2021) 254-271



2020

Zobač O., Kroupa A., Richter K.: Experimental isothermal sections of the ternary phase diagram Al-Cu-Si at 600 °C and 800 °C. J. Mater. Sci. 55 (2020) 15322-15333

Zobač O., Kroupa A., Richter K.: Experimental study of the Al-Cu-Zn ternary phase diagram. Mater. Sci. 55 (2020) 10796-10810

Zobač O., Kroupa A.: The Thermodynamic Assessment of the Binary System Bi-Rh. J. Phase Equil. Diffus. 41 (2020) 900-906

Dinsdale A., Zobač O., Kroupa A., Khvan A.: Use of third generation data for the elements to model the thermodynamics of binary alloy systems: Part 1 - The critical assessment of data for the Al-Zn system. CALPHAD 68 (2020) 101723



2019

Brož P., Hejduková M., Vykoukal V., Zelenka F., Sopoušek J., Buršík J., Zobač O.: Study of surface effects and catalytic properties of selected Ni-based bimetallic nanoparticles by Knudsen effusion mass spectrometry. CALPHAD 64 (2019) 334-341

Zobač O., Kroupa A., Zemanová A., Richter K.: Experimental Description of the Al-Cu Binary Phase Diagram. Metall. Mater. Trans. A 50 (2019) 3805-3815

Brož P., Zelenka F., Sopoušek J., Hejduková M., Sojková T., Zobač O.: Thermal analysis and Knudsen effusion mass spectrometry combined in a specially-adapted commercial skimmer coupled instrument (Netzsch). CALPHAD 65 (2019) 86-92



2018

Bernard V., Zobač O., Vlková M., Mornstein V., Sopoušek J.: AgCu bimetallic nanoparticles modified by polyvinyl alcohol - The cells viability study in vitro. Lekar a technika - Clinician and Technology 48 (2018) 5-10

Homolová V., Kepič J., Zemanová A., Zobač O.: Experimental Study of Phase Composition of B-Fe-Mn-V Alloys and Thermodynamic Calculations of Phase Equilibria in the B-Mn-V and B-Fe-Mn-V Systems. Adv. Mater. Sci. Eng. 2018 (2018) 3950980



2017

Sopoušek J., Kryštofová A., Premović M., Zobač O., Polsterová S., Brož P., Buršík J.: Phase diagram prediction, synthesis, characterization, and thermal stability. CALPHAD 58 (2017) 25-33



2015

Sopoušek J., Zobač O., Vykoukal V., Buršík J., Roupcová P., Brož P., Pinkas J., Vřešťál J.: Temperature stability of AgCu nanoparticles. J Nanopart Res 17 (2015) 478

Zobač O., Sopoušek J., Kroupa A.: Calphad-type assessment of the Sb-Sn-Zn ternary system. CALPHAD 51 (2015) 51-56

Sopoušek J., Zobač O., Buršík J., Roupcová P., Vykoukal V., Brož P., Pinkas J., Vřešťál J.: Heat-induced spinodal decomposition of Ag-Cu nanoparticles. Phys. Chem. Chem. Phys. 17 (2015) 28277-28285



2014

Sopoušek J., Pinkas J., Brož P., Buršík J., Vykoukal V., Škoda D., Stýskalík A., Zobač O., Vřešťál J., Hrdlička A., Šimbera J.: Ag-Cu Colloid Synthesis: Bimetallic Nanoparticle Characterisation and Thermal Treatment. J. Nanomater. 2014 (2014) 638964

Zobač O., Sopoušek J., Buršík J., Zemanová A., Roupcová P.: Experimental study of the Sb-Sn-Zn alloy system. Metall. Mater. Trans. A 45 (2014) 1181-1188

Bernard V., Zobač O., Sopoušek J., Mornstein V.: AgCu Bimetallic Nanoparticles under Effect of Low Intensity Ultrasound: The Cell Viability Study In Vitro. J. Cancer Research 2014 (2014) 971769

Sopoušek J., Vřešťál J., Pinkas J., Brož P., Buršík J., Stýskalík A., Škoda D., Zobač O., Lee J.: Cu-Ni nanoalloy phase diagram - Prediction and experiment. CALPHAD 45 (2014) 33-39


Number of ProjectName
8J23AT006 Synthesis and characterization of intermetallic supported nanoparticles.